SERVICE INSTRUCTION R410A. SPLIT TYPE ROOM AIR CONDITIONER Universal Floor / Ceiling Duct / Cassette Wall Mounted / Floor type INVERTER MULTI

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1 SERVICE INSTRUCTION SPLIT TYPE ROOM AIR CONDITIONER Universal Floor / Ceiling Duct / Cassette Wall Mounted / Floor type INVERTER MULTI R410A Models Indoor unit Outdoor unit AB*14LBAJ AB*18LBAJ AB*F14LAT AB*F18LAT AR* 9LUAB AR*12LUAD AR*14LUAD AR*18LUAD AR*F09LALU AR*F12LALU AR*F14LALU AR*F18LALU AU*12LBAB AU*14LBAB AU*18LBAB AU*F09LAL AU*F12LAL AU*F14LAL AU*F18LAL AS* 7LMACW AS* 9LMACW AS*12LMACW AS*A07LACM AS*A09LACM AS*A12LACM AS*A14LACM AS*A18LACM AO*A18LAT3 AO*A24LAT3 AG*F09LAC AG*F12LAC AG*F14LAC

2 CONTENTS 1. DESCRIPTION OF EACH CONTROL OPERATION 1. CAPACITY CONTROL AUTO CHANGEOVER OPERATION INDOOR FAN CONTROL OUTDOOR FAN CONTROL LOUVER CONTROL COMPRESSOR CONTROL TIMER OPERATION CONTROL ELECTRONIC EXPANSION VALVE CONTROL TEST OPERATION CONTROL PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST ) MANUAL AUTO OPERATION COMPRESSOR PREHEATING FRESH AIR CONTROL EXTERNAL ELECTRICAL HEATER CONTROL DEFROST OPERATION CONTROL DRAIN PUMP OPERATION ENERGY SAVE FUNCTION VARIOUS PROTECTIONS WAY VALVE EXTENSION SELECT AUTO RESTART COIL DRY OPERATION CONTROL TROUBLE SHOOTING 2-1 ERROR DISPLAY INDOOR UNIT DISPLAY OUTDOOR UNIT DISPLAY TROUBLE SHOOTING WITH ERROR CODE TROUBLE SHOOTING WITH NO ERROR CODE SERVICE PARTS INFORMATION WIRED REMOTE CONTROLLER DISPLAY REPLACEMENT PARTS

3 R410A Universal Floor / Ceiling Duct / Cassette Wall Mounted / Floor type INVERTER (MULTI ) 1. DESCRIPTION OF EACH CONTROL OPERATION

4 1. CAPACITY CONTROL 1-1 COOLING, HEATING, DRY CAPACITY CONTROL Compressor frequency decides by capacity of an indoor unit, operation number of an indoor unit, set temperature, room temperature and outside temperature. 2. AUTO CHANGEOVER OPERATION When the air conditioner is set to the AUTO mode by remote control, operation starts in the optimum mode from among the HEATING, COOLING and MONITORING modes. During operation, the optimum mode is automatically swiched in accordance with temperature changes. The temperature can be set between 18 C and 30 C in 1 degc steps. 1 When operation starts, only the indoor fan is operated for 1 minute. (Air flow mode: S- Lo) After 1 minute, depends on the room temperature and outdoor unit's operarion mode, the operation mode is selected in accordance with the table below. ( Table 1 : Operation mode selection table ) Room temperature :TR Operation mode TR = > Ts +2 degc Ts +2 degc > TR > Ts-2 degc Cooling Monitoring Ts +2 degc > = TR Ts : Setting temperature TR: Room temperature Heating 2 When COOLING was selected at 1, the same operation as COOLING OPERATION is performed. 3 When HEATING was selected at 1, the same operation as HEATING OPERATION is performed. 4 When the compressor was stopped for 6 consecutive minutes by the temperature control function after the COOLING or HEATING operation mode was selected at 1 above, operation is switched to MONITORING and the operation mode is selected again

5 3. INDOOR FAN CONTROL 1. Fan speed ( Table 2 : Indoor Fan Speed ) AB*14LBAJ Operation mode Air flow mode Speed (rpm) Cooling Heating AB*18LBAJ Operation mode Air flow mode Speed (rpm) Hi 850 Cooling Hi 1030 Me Lo Heating Me Lo S-Lo 250 S-Lo 250 AB*F14LAT Operation mode Air flow mode Speed (rpm) Cooling Heating Hi 850 Me 800 Lo 740 Quiet 670 S-Lo 300 AB*F18LAT Operation mode Air flow mode Speed (rpm) Cooling Heating Hi 1040 Me 950 Lo 800 Quiet 740 S-Lo 300 AR*9LUAB Operation mode Air flow mode Speed (rpm) Cooling Heating AR*14LUAD Cooling Heating Hi 955 Me 870 Lo 800 S-Lo 650 Operation mode Air flow mode Speed (rpm) Hi 1000 Me 860 Lo 720 S-Lo 570 AR*12LUAD Operation mode Air flow mode Speed (rpm) Cooling Heating AR*18LUAD Cooling Heating Hi 750 Me 680 Lo 610 S-Lo 550 Operation mode Air flow mode Speed (rpm) Hi 1040 Me 890 Lo 750 S-Lo 595 AR*F09LALU Operation mode Air flow mode Speed (rpm) Cooling Heating AR*F14LALU Cooling Heating Hi 1010 Me 950 Lo 880 Quiet 830 S-Lo 450 Operation mode Air flow mode Speed (rpm) Hi 990 Me 880 Lo 770 Quiet 620 S-Lo 330 AR*F12LALU Operation mode Air flow mode Speed (rpm) Cooling Heating AR*F18LALU Cooling Heating Hi 790 Me 720 Lo 620 Quiet 570 S-Lo 330 Operation mode Air flow mode Speed (rpm) Hi 1040 Me 950 Lo 840 Quiet 700 S-Lo

6 AU*12/ 14LBAB AU*18LBAB Operation mode Air flow mode Speed (rpm) Cooling Heating Operation mode Air flow mode Speed (rpm) Hi Me Cooling Heating Hi Me Lo 590 Lo 600 S-Lo --- S-Lo --- AU*F09LAL Operation mode Air flow mode Speed (rpm) AU*F12LAL Operation mode Air flow mode Speed (rpm) Cooling Fan Heating Dry Monitoring Hi 590 Me 540 Lo 490 Quiet 440 Hi 590 Me+ 570 Me 540 Lo Quiet Auto S- Lo Cooling Fan Heating Dry Monitoring Hi 660 Me 580 Lo 520 Quiet 460 Hi 650 Me+ 620 Me 580 Lo Quiet Auto S- Lo AU*F14LAL AU*F18LAL Operation mode Air flow mode Speed (rpm) Operation mode Air flow mode Speed (rpm) Cooling Fan Heating Dry Monitoring Hi 730 Me 630 Lo 540 Quiet 460 Hi 740 Me+ 700 Me 670 Lo Quiet Auto S- Lo Cooling Fan Heating Dry Monitoring Hi 790 Me 660 Lo 570 Quiet 460 Hi 840 Me+ 800 Me 750 Lo Quiet Auto S- Lo

7 AS*7LMACW Operation mode Cooling Fan Heating Air flow mode Speed (rpm) Louver position Louver position Hi 1100 Me Lo Quiet Hi 1120 Me 1070 Lo 1000 Quiet S- Lo AS*9LMACW Operation mode Cooling Fan Heating Air flow mode Speed (rpm) Louver position Louver position Hi 1200 Me Lo Quiet Hi 1200 Me 1100 Lo 1000 Quiet S- Lo AS*12LMACW Operation mode Cooling Fan Heating Air flow mode Speed (rpm) Louver position Louver position 2 Hi 1310 Me Lo Quiet Hi 1310 Me 1180 Lo 1030 Quiet S- Lo

8 AS*A07LACM Operation mode Air flow mode Speed (rpm) AS*A09LACM Operation mode Air flow mode Speed (rpm) Cooling Fan Heating Dry Monitoring Hi 1140 Me 1000 Lo 880 Quiet 700 Hi/ Me+ Me Lo Quiet Auto S- Lo Cooling Fan Heating Dry Monitoring Hi 1220 Me 1060 Lo 900 Quiet 720 Hi/ Me+ Me Lo Quiet Auto S- Lo AS*A12LACM AS*A14LACM Operation mode Air flow mode Speed (rpm) Operation mode Air flow mode Speed (rpm) Cooling Fan Heating Dry Monitoring Hi 1280 Me Lo Quiet Hi/ Me Me 1180 Lo 1080 Quiet 860 Auto 750 S- Lo 480 Cooling Fan Heating Dry Monitoring Hi 1480 Me 1250 Lo 1050 Quiet 850 Hi/ Me+ Me Lo Quiet Auto S- Lo AS*A18LACM Operation mode Air flow mode Speed (rpm) Cooling Fan Heating Dry Monitoring Hi 1480 Me 1250 Lo 1100 Quiet 950 Hi/ Me+ Me Lo Quiet Auto S- Lo

9 AG*F09LAC Operation mode Air flow mode Speed (rpm) Cooling Fan Heating AG*F12LAC Upper& Lower air flow mode Upper air flow mode Hi (Upper/ Lower) 1120/ / --- Me (Upper/ Lower) 960/ / --- Lo (Upper/ Lower) 820/ / --- Quiet (Upper/ Lower) 660/ / --- S-Lo (Upper/ Lower) 570/ / --- Hi (Upper/ Lower) 1120/ / --- Me (Upper/ Lower) 1000/ / --- Lo (Upper/ Lower) 860/ / --- Quiet (Upper/ Lower) 660/ / --- Cool air prevention (Upper/ Lower) 660/ / --- S-Lo (Upper/ Lower) 660/ / --- Operation mode Air flow mode Speed (rpm) Cooling Fan Heating AG*F14LAC Upper& Lower air flow mode Upper air flow mode Hi (Upper/ Lower) 1240/ / --- Me (Upper/ Lower) 1050/ / --- Lo (Upper/ Lower) 860/ / --- Quiet (Upper/ Lower) 660/ / --- S-Lo (Upper/ Lower) 570/ / --- Hi (Upper/ Lower) 1240/ / --- Me (Upper/ Lower) 1080/ / --- Lo (Upper/ Lower) 910/ / --- Quiet (Upper/ Lower) 660/ / --- Cool air prevention (Upper/ Lower) 660/ / --- S-Lo (Upper/ Lower) 660/ / --- Operation mode Air flow mode Speed (rpm) Cooling Fan Heating Upper& Lower air flow mode Upper air flow mode Hi (Upper/ Lower) 1330/ / --- Me (Upper/ Lower) 1100/ / --- Lo (Upper/ Lower) 890/ / --- Quiet (Upper/ Lower) 660/ / --- S-Lo (Upper/ Lower) 570/ / --- Hi (Upper/ Lower) 1330/ / --- Me (Upper/ Lower) 1140/ / --- Lo (Upper/ Lower) 940/ / --- Quiet (Upper/ Lower) 660/ / --- Cool air prevention (Upper/ Lower) 660/ / --- S-Lo (Upper/ Lower) 660/ / FAN OPERATION 2-1. For AB*14L/ 18L AR* 9L/ 12L/ 14L/ 18L AU*12L/ 14L/ 18L The airflow can be switched in 4 steps such as AUTO, LOW, MED, HIGH, while the indoor fan only runs For AB*F14L/ 18L AR*F09L/ 12L/ 14L/ 18L AU*F09L/ 12L/ 14L/ 18L AS*7L/ 9L/ 12L AS*A07L/ 09L/ 12L/ 14L/ 18L AG*F09L/ 12L/ 14L The airflow can be switched in 5 steps such as AUTO, QUIET, LOW, MED, HIGH, while the indoor fan only runs

10 3. COOLING OPERATION Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature, as shown in Figure 1. On the other hand, if switched in [HIGH] [QUIET], the indoor motor will run at a constant airflow of [COOL] operation modes QUIET, LOW, MED, HIGH,as shown in Table 2. (Fig.1) airflow change - over ( Cooling: AUTO ) *1 When the room temperature rises TR : Room temperature Ts : Setting temperature TR-Ts > 2 degc = 2 degc > TR-Ts > 1 degc = 1 degc > TR-Ts Hi mode Me mode Lo mode When the room temperature lowers TR-Ts > = 3 degc *(TR-Ts > = 2.5 degc) 3 degc > TR-Ts = > 2 degc *(2.5 degc > TR-Ts > = 1.5 degc) 2 degc > TR-Ts *(2 degc > TR-Ts) *For AB*F/ AR*F/ AS*A/ AU*F/ AG*F Type *1 : Contains a condition to the following When the operation mode is set to AUTO mode at the start of operation. When the setting temperature was changed. When the operation mode was changed to COOLING mode. When the airflow mode was changed to AUTO mode. 4. HEATING OPERATION 4-1. For AB/ AR/ AU/ AS Type When the airflow is set to [AUTO], the indoor fan motor operates [MED] mode. Then the indoor fan motor will run according to a room temperature, as shown in Figure 2. On the other hand, if switched in [HIGH] [QUIET], the indoor motor will run at a constant airflow of [HEAT] operation modes QUIET, LOW, MED, HIGH, as shown in Table 2. ( Fig.2 : Airflow change - over ( Heating : AUTO ) ) Indoor heat exchanger temperature 47 C 41 C *(42 C) Go up one-step Hold Go down one-step *For AS*7/ 9/ 12LMACW 4-2. For AB*F/ AR*F/ AU*F/ AS*A/ AG*F Type Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature, as shown in Figure 3. On the other hand, if switched in [HIGH] [QUIET], the indoor motor will run at a constant airflow of [HEAT] operation modes QUIET, LOW, MED, HIGH, as shown in Table 2. ( Fig.3 : Airflow change - over ( Heating : AUTO ) ) TR-Ts > - 1 degc = - 1 degc > TR-Ts > - 2 degc = When the room temperature rises Lo mode Me mode When the room temperature drops TR-Ts > degc = degc > TR-Ts > degc = TR : Room temperature Ts : Setting temperature - 2 degc > TR-Ts Hi mode *(Me+ mode) degc > TR-Ts *For AS*A07/ 09/ 12/ 14/ 18LACM 01-07

11 5. COOL AIR PREVENTION CONTROL (Heating mode) 5-1. For AB/ AR/ AU Type The maximum value of the indoor fan speed is set as shown in Figure 4, based on the detected temperature by the indoor heat exchanger sensor on heating mode. ( Fig.4 : Cool Air Prevention Control ) Indoor heat exchanger temperature 33 C 30 C SETTING FAN MODE LO mode S-LOW mode Indoor heat exchanger temperature 30 C 5-2. For AB*F/ AU*F Type When the compressor operates, the maximum value of the indoor fan speed is set as shown in Figure 5, based on the detected temperature by the indoor heat exchanger sensor on heating mode. When the compressor does not operate, the indoor fan motor operates [S-Lo] mode. ( Fig.5 : Cool Air Prevention Control ) Indoor heat exchanger temperature 42 C 39 C 37 C 30 C < [Hi] setting > Hi Me+ Lo Cool air prevention S-Lo Indoor heat exchanger temperature 37 C 34 C 32 C 24 C Indoor heat exchanger temperature 39 C 37 C 30 C [ Cool air prevention 400rpm, S-Lo 300rpm ] < The other of [Hi] setting > Setting FAN mode Lo (Qu) Cool air prevention S-Lo Indoor heat exchanger temperature 34 C 32 C 24 C 5-3. For AS Type The maximum value of the indoor fan speed is set as shown in Figure 6, based on the fan speed mode and the detected temperature by the indoor heat exchanger sensor on heating mode. ( Fig.6 : Cool Air Prevention Control for AS*7/ 9/ 12LMACW ) Indoor heat exchanger temperature Indoor heat exchanger temperature 42 C 35 C 30 C 18 C E zone D zone C zone B zone A zone 39 C 32 C 26 C 15 C Fan speed mode ZONE E zone D zone C zone B zone A zone AUTO HIGH MED LOW QUIET AUTO AUTO Me Setting Fan Speed Lo Lo Lo S-Lo S-Lo S-Lo S-Lo S-Lo OFF OFF OFF OFF OFF 01-08

12 5-4. For AS*A Type When the compressor operates, the maximum value of the indoor fan speed is set as shown in Figure 7, based on the detected temperature by the indoor heat exchanger sensor on heating mode. When the compressor does not operate, the indoor fan motor operates [S-Lo] mode. ( Fig.7 : Cool Air Prevention Control ) Indoor heat exchanger temperature 47 C 40 C 37 C 30 C < [Hi] setting > Hi Me+ Lo Cool air prevention S-Lo Indoor heat exchanger temperature 40 C 34 C 32 C 28 C Indoor heat exchanger temperature 40 C 37 C 30 C [ AS*A07L: Cool air prevention 800rpm, S-Lo 480rpm ] [ AS*A09L: Cool air prevention 830rpm, S-Lo 480rpm ] [ AS*A12L: Cool air prevention 860rpm, S-Lo 480rpm ] [ AS*A14L/ 18L: Cool air prevention 850rpm, S-Lo 480rpm ] < The other of [Hi] setting > Setting FAN mode Lo (Qu) Cool air prevention S-Lo Indoor heat exchanger temperature 34 C 32 C 28 C 5-5. For AG*F Type When the compressor operates, the maximum value of the indoor fan speed is set as shown in Figure 8, based on the detected temperature by the indoor heat exchanger sensor on heating mode. When the compressor does not operate, the indoor fan motor operates [S-Lo] mode. ( Fig.8 : Cool Air Prevention Control ) Indoor heat exchanger temperature 42 C 39 C 37 C 30 C < [Hi] setting > Hi Me Lo Cool air prevention S-Lo Indoor heat exchanger temperature 34 C 31 C 29 C 24 C Indoor heat exchanger temperature 39 C 37 C 30 C < The other of [Hi] setting > Setting FAN mode Lo (Qu) Cool air prevention S-Lo Indoor heat exchanger temperature 31 C 29 C 24 C 5-6. For AR*F Type When the compressor operates, the maximum value of the indoor fan speed is set as shown in Figure 9, based on the detected temperature by the indoor heat exchanger sensor on heating mode. When the compressor does not operate, the indoor fan motor operates [S-Lo] mode. ( Fig.9 : Cool Air Prevention Control ) Indoor heat exchanger temperature 37 C 30 C < [Hi] setting > < The other of [Hi] setting > Hi mode Lo mode S-Lo mode Indoor heat exchanger temperature 32 C 24 C Indoor heat exchanger temperature Setting Fan mode 37 C 30 C Lo (Qu) mode S-Lo mode Indoor heat exchanger temperature 32 C 24 C 6. DRY OPERATION During the dry mode operation, the fan speed setting can not be changed. ( S-Lo ) 01-09

13 4. OUTDOOR FAN CONTROL 1. Outdoor Fan Motor Following table shows the fan speed of the outdoor unit. ( Table 3 : Fan speed of the outdoor unit ) AO*A18LAT3 AO*A24LAT3 Cooling Heating 780/ 730/ 400/ 300/ 250/ 200 rpm 780/ 730/ 660/ 400/ 300/ 250 rpm * It runs at 500rpm for 20 seconds after starting up the outdoor fan. When the outdoor heat exchanger tenperature is lower than 1 C, the fan speed switches to 780rpm on heating mode

14 5. LOUVER CONTROL 5-1 Compact Cassette (AU) type 1. VERTICAL LOUVER CONTROL (Function Range) Each time the button is pressed, the air direction range will change as follows: (Air Direction Range) (Operation Range) Cooling / Dry mode Heating mode Fan mode Use the air direction adjustments within the ranges shown above. The vertical airflow direction is set automatically as shown, in accordance with the type of operation selected. Cooling / Dry / Fan mode Horizontal flow Heating mode Downward flow At the start of operation if the setting louver position is after the louver moves from totally-enclosed position to,the setting position is set to. (Positioning Control) The indoor fan motor starts after the louver reaches to the setting position SWING OPERATION When the swing signal is received from the remote controller, the vertical louver starts to swing. The range of swing depends on the set airflow direction. (Swinging Range) Airflow direction set Range of swing to to to to When the indoor fan is either at S-Lo or Stop mode, the swinging operation is interrupted and the louver stops at the memorized position. ( Stop mode means Operation stop.) 01-11

15 5-2 Universal (AB) type 1. VERTICAL LOUVER CONTROL (Function Range) Each time the button is pressed, the air direction range will change as follows: (Operation Range) Cooling / Dry mode Heating mode Fan mode (Air Direction Range) Use the air direction adjustments within the ranges shown above. The vertical airflow direction is set automatically as shown, in accordance with the type of operation selected. Cooling / Dry / Fan mode Horizontal flow 1 Heating mode Downward flow 7 At the start of operation if the setting louver position is 1 or 2,the setting position is set to 1 or 2 after the louver moves from totally-enclosed position to 3. (Positioning Control) The indoor fan motor starts after the louver reaches to the setting position SWING OPERATION When the swing signal is received from the remote controller, the vertical louver starts to swing. The range of swing depends on the set airflow direction. (Swinging Range) Airflow direction set Range of swing to to to to to to to When the indoor fan is either at S-Lo or Stop mode, the swinging operation is interrupted and the louver stops at the memorized position. ( Stop mode means Operation stop.) 01-12

16 2. HORIZONTAL LOUVER CONTROL (Function Range) Each time the button is pressed, the air direction range will change as follows: (Air Direction Range) (Operation Range) Cooling / Dry mode Heating mode Fan mode Use the air direction adjustments within the ranges shown above. The horizontal airflow direction is set automatically on 3 after initialization SWING OPERATION When the swing signal is received from the remote controller, the horizontal louver starts to swing. The range of swing depends on the set airflow direction. (Swinging Range) Airflow direction set Range of swing to to to to 5 1 to 5 When the indoor fan is either at S-Lo or Stop mode, the swinging operation is interrupted and the louver stops at the memorized position. ( Stop mode means Operation stop.) 01-13

17 5-3 Wall Mounted (AS) type 1. VERTICAL LOUVER CONTROL (Function Range) Each time the button is pressed, the air direction range will change as follow: (Operation Range) Cooling / Dry mode Heating mode The remote control unit's display does not change. (Air Direction Range) Use the air direction adjustments within the ranges shown above. The vertical airflow direction is set automatically as shown, in accordance with the type of operation selected. Cooling / Dry mode Horizontal flow Heating mode Downward flow During AUTO mode operation, for the first minute after beginning operation, airflow will be horizontal ; the air direction cannot be adjusted during this period SWING OPERATION When the swing signal is received from the remote controller, the vertical louver starts to swing. (Swinging Range) Cooling mode / Dry mode / Fan mode ( ) Heating mode / Fan mode ( ) When the indoor fan is either at S-lo or Stop mode, the swinging operation is interrupted and the louver stops at the memorized position

18 5-4 Wall Mounted (AS*A) type 1. VERTICAL LOUVER CONTROL (Function Range) Each time the button is pressed, the air direction range will change as follow: (Operation Range) Cooling / Dry mode Heating mode Fan mode Use the air direction adjustments within the ranges shown above. (Air Direction Range) The vertical airflow direction is set automatically as shown, in accordance with the type of operation selected. Cooling / Dry mode Horizontal flow Heating mode Downward flow When the temperature of the air being blown out is low at the start of heating operation or during defrosting, the airflow direction temporarily becomes to prevent cold air being blown onto the body. During use of the Cooling and Dry modes, do not set the Air Flow Direction Louver in the Heating range ( ) for long period of time, since water vapor many condense near the outlet louvers and drop of water may drip from the air conditioner. During the Cooling and Dry modes, if the Air Flow Direction Louvers are left in the hating range for more than 30 minutes, they will automatically return to position. During Monitor operation in AUTO CHANGEOVER mode, the airflow direction automatically becomes, and it cannot be adjusted SWING OPERATION When the swing signal is received from the remote controller, the vertical louver starts to swing. (Swinging Range) Cooling mode / Dry mode / Fan mode ( ) Heating mode / Fan mode ( ) When the indoor fan is either at S-lo or Stop mode, the swinging operation is interrupted and the louver stops at the memorized position

19 5-5 Compact Cassette (AU*F) type 1. VERTICAL LOUVER CONTROL (Function Range) Each time the button is pressed, the air direction range will change as follows: (Air Direction Range) (Operation Range) During Cooling/Dry mode/fan mode : During Heating mode : Use the air direction adjustments within the ranges shown above The vertical airflow direction is set automatically as shown, in accordance with the type of operation selected. Cooling / Dry / Fan mode Horizontal flow Heating mode Downward flow During AUTO mode operation, for the first minute after beginning operation, air-flow will be horizontal ; the air direction cannot be adjusted during this period SWING OPERATION When the swing signal is received from the remote controller, the vertical louver starts to swing. The range of swing depends on the set airflow direction. (Swinging Range) The type of operation Cooling/Dry/Fan Range of swing to Heating to When the indoor fan is either at S-Lo or Stop mode, the swinging operation is interrupted and the louver stops at the memorized position. ( Stop mode means Operation stop.) 01-16

20 5-6 Floor (AG*F) type 1. VERTICAL LOUVER CONTROL (Function and Operation Range) Each time the button is pressed, the air direction range will change as follows: Use the air direction adjustments within the ranges shown above. (Air Direction Range) The vertical airflow direction is set automatically as shown, in accordance with the type of operation selected. Cooling / Dry mode Horizontal flow Heating mode Downward flow When the temperature of the air being blown out is low at the start of heating operation or during defrosting, the airflow direction temporarily becomes to prevent cold air being blown onto the body. During Monitor operation in AUTO CHANGEOVER mode, the airflow direction automatically becomes, and it cannot be adjusted SWING OPERATION When the swing signal is received from the remote controller, the vertical louver starts to swing. (Swinging Range) When the indoor fan is either at S-lo or Stop mode, the swinging operation is interrrupted and the louver stops at the memorized position

21 6. COMPRESSOR CONTROL 1. OPERATION FREQUENCY RANGE The operation frequency of the compressor is different based on the operation mode as shown in the table 4. (Table 4 : Compressor Operation Frequency Range) Cooling Heating AO*A18LAT3 AO*A24LAT3 Min Max Min Max 20Hz 100Hz 24Hz 110Hz 2. OPERATION FREQUENCY CONTROL AT START UP The compressor frequency soon after the start-up is controlled as shown in Figure 10. (Fig.10 : Compressor Control at Start-up) 85Hz sec 56Hz 120sec 40Hz 120sec sec sec 01-18

22 7. TIMER OPERATION CONTROL 7-1 Wireless Remote Controller ( For AB/ AU/ AU*F/ AS/ AS*A/ AB*F/ AG*F type ) ON / TIMER OFF / TIMER PROGRAM TIMER SLEEP TIMER 1. ON / OFF TIMER OFF timer : When the clock reaches the set time, the air conditioner will be turned off. Operation mode Stop mode Set time of timer ON timer : When the clock reaches the set time, the air conditioner will be turned on. Stop mode Operation mode Set time of timer 2. PROGRAM TIMER The program timer allows the OFF timer and ON timer to be used in combination one time. Operation mode Operation mode Operation mode Stop mode Stop mode Stop mode Set time Set time Set time Set time Operation will start from the timer setting (either OFF timer or ON timer) whichever is closest to the clock's current timer setting. The order of operations is indicated by the arrow in the remote control unit's display. SLEEP timer operation cannot be combined with ON timer operation

23 3. SLEEP TIMER If the sleep timer is set, the room temperature is monitored and the operation is stopped automatically. If the operation mode or the set temperature is change after the sleep timer is set, the operation is continued according to the changed setting of the sleep timer from that time ON. In the cooling operation mode When the sleep timer is set, the setting temperature is increased 1 degc. It increases the setting temperature another 1 degc after 1 hour. After that, the setting temperature is not changed and the operation is stopped at the time of timer setting. Set temperature rises ( Ts : Set temperature ) +2degC +1degC Ts Stop of operation Set 60min In the heating operation mode When the sleep timer is set, the setting temperature is decreased 1 degc. It decreases the setting temperature another 1 degc every 30 minutes. Upon lowering 4 degc, the setting temperature is not changed and the operation stops at the time of timer setting. Set temperature lowers ( Ts : Set temperature ) Ts -1degC -2degC -3degC -4degC Stop of operation Set 30min 30min 30min 01-20

24 7-2 Wired Remote Controller ( For AR/ AR*F type ) ON / TIMER OFF / TIMER WEEKLY TIMER TEMPERATURE SET BACK TIMER 1. ON / OFF TIMER OFF timer : When the clock reaches the set time, the air conditioner will be turned off. Operation mode Stop mode Set time of timer ON timer : When the clock reaches the set time, the air conditioner will be turned on. Stop mode Operation mode Set time of timer 2. WEEKLY TIMER 2-1. WEEKLY TIMER Use this timer function to set operating time for each day of the week. The weekly timer allows up to two ON and OFF time to set up per day. Operation mode Operation mode Operation mode Stop mode Stop mode Stop mode Set time Set time Set time Set time The operating time can be set in 30 min increments only. The OFF time can be carried over to next day. The ON timer and the OFF timer functions cannot be set with using the weekly timer. Both ON and OFF time must be set

25 2-2. DAY OFF setting The DAY OFF setting is only available for days for which weekly settings already exist. If the operating time carries over to the next day (during a next day setting), the effective DAY OFF range will be set as shown below. Normal DAY OFF Operation mode Operation mode Stop mode Stop mode Stop mode Preceding day Setting day Next day Next day setting Stop mode Operation mode Stop mode DAY OFF Operation mode Stop mode Preceding day Setting day Next day The DAY OFF setting can only be set one time. The DAY OFF setting is cancelled automatically after the set day has passed. 3. TEMPERATURE SET BACK TIMER The SET BACK timer only changes the set temperature for 7 days, it cannot be used to start or stop air conditioner operation. The SET BACK timer can be set to operate up to two times per day but only one temperature setting can be used. During the COOL/DRY mode, the air conditioner will operate at a minimum of 18 C even if the SET BACK temperature is set to 17 C or lower. Case of SET BACK timer on the Cooling operation. ( Setting temperature :22 C, SET BACK temperature :26 C) SET BACK setting ON OFF ON OFF Operation temperature *1 Operation temperature 26 C 22 C 26 C 24 C 22 C *1: During the SET BACK function, the setting temperature is changed. Chenge the setting temperature: 22 C 24 C 01-22

26 8. ELECTRONIC EXPANSION VALVE CONTROL The most proper opening of the electronic expansion valve is calculated and controlled under the present operating condition based on the following values. The compressor frequency, the temperatures detected by the discharge temperature sensor and the outdoor temperature sensor. The pulse range of the electronic expansion valve control is between 30 to 480 pulses. At the time of supplying the power to the outdoor unit, the initialization of the electronic expansion valve is operated (1000 pulses are input to the closing direction). 9. TEST OPERATION CONTROL With Wireless Remote Controller Under the condition where the air conditioner runs, short two metal contacts under the battery compartment lid, and the test operation control mode will appear. During test running, the operation lamp and timer lamp of the air conditioner body twinkle simultaneously. Set the test operation mode, and the compressor will continue to run regardless of whether the room temperature sensor detects. The test operation mode is released if 60 minutes have passed after setting up the test operation. With Wireless Remote Controller ( with TEST RUN button ) Under the condition where the air conditioner runs, press the TEST RUN button, and the test operation control mode will appear. During test running, the operation lamp and timer lamp of the air conditioner body twinkle simultaneously. Set the test operation mode, and the compressor will continue to run regardless of whether the room temperature sensor detects. The test operation mode is released if 60 minutes have passed after setting up the test operation. With Wired Remote Controller ( without TEST RUN button ) Under the condition where the air conditioner stops, press the MASTER CONTROL button and the FAN CONTROL button simultaneously for 5 seconds or more, and the test operation control mode will appear. During test running, " " will display on the remote controller display. Set the test operation mode, and the compressor will continue to run regardless of whatever the room temperature sensor detects. The test operation mode is released if 60 minutes have passed after setting up the test operation. 10. PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST ) The compressor won't enter operation status for 3 minutes after the compressor is stopped, even if any operation is given WAY VALVE EXTENSION SELECT At the time when the air conditioner is switched from the cooling mode to heating mode, the compressor is stopped, and the 4-way valve is switched in 3 minutes later after the compressor stopped

27 12. AUTO RESTART When the power was interrupted by a power failure, etc. during operation, the operation contents at that time are memorized and when power is recovered, operation is automatically resumed with the memorized operation contents. When the power is interrupted and recovered during timer operation, timer operation is canceled, but only setting time is memorized. [Operation contents memorized when the power is interrupted] Operation mode Set temperature Set air flow Timer mode and timer time Air flow Direction Swing Thermistor detected position (For AU*F model wih wired remote controller) 10 C HEAT (For AG*F model) 13. MANUAL AUTO OPERATION (Indoor unit body operation) If MANUAL AUTO Button is set, the operation is controlled as shown in Table 5. If the remote control is lost or battery power dissipated, this function will work without the remote control. (Table 5 : Manual auto operation) OPERATION MODE Auto changeover FAN CONT. MODE Auto TIMER MODE Continuous (No timer setting available) SETTING TEMP. 23 C or 24 C SETTING LOUVER Standard SWING OFF 14. COMPRESSOR PREHEATING When the outdoor heat exchanger temperature is lower than Operation temperature (Refer to Table 6) and the heating operation has been stopped for 3 hours, power is applied to the compressor and the compressor is heated. (By heating the compressor, warm air is quickly discharged when operation is started.) When operation was started, and when the outdoor temperature rises to Release temperature or greater, preheating is over. (Table 6 : Preheating Operation / Release Temperature) Before 24 hour Operation temperature Release temperature Operation temperature After 24 hour Release temperature 3 C 7 C 0 C 4 C 15. FRESH AIR CONTROL (For AR type) The fan motor for Fresh Air is operated in synchronization with the indoor fan operation as shown in Figure 11. (Fig.11 : Fresh air control) Fan motor (Indoor unit) Operation Stop Fan motor (for Fresh Air) Operation Stop 01-24

28 16. EXTERNAL ELECTRICAL HEATER CONTROL (For AR type) The external electrical heater is operated as shown in Figure 12. (Fig.12 : External electrical heater control) Ts -3 C Ts -12 C When the room temperature drops Heater : OFF Heater : ON Heater : OFF When the room temperature rises Ts -1 C Ts -10 C Ts : Setting temperature When the compressor stop, External electrical heater is OFF. 17. COIL DRY OPERATION CONTROL (For AS*A/ AG*F type) The coil-dry operation functions by pressing COIL DRY button on the remote controller. The coil-dry operation is consisted of 3 cycles of [Fan operation 3 minutes / Heating operation 2 minutes], and Fan operates for 3 minutes at last before ending the air conditioner operation. (It takes 18 minutes to complete the coil-dry operation.) 18. DEFROST OPERATION CONTROL 1. CONDITION OF STARTING THE DEFROST OPERATION The defrost operation starts when the outdoor heat exchanger temperature sensor detects the temperature lower than the values shown in Table 7. (Table 7 : Condition of starting Defrost Operation) Compressor integrating operation :Less than 45min. Does not operate Compressor integrating operation :45min and over Less than 6 min. *1 or 10min. *2 After 6 min. *1 or 10min. *2-8 C *3-12 C *4-14 C *5-16 C *6 *1. It means contiguous operation time. *2. Compressor stop time: Below 20min. Select 6min. Above 20min. Select 10min. *3. Outdoor temp. > 3 C *4. 3 > = Outdoor temp. > -1 C *5. -1 > = Outdoor temp. > -5 C *6. Outdoor temp. < -5 C 2. CONDITION OF THE DEFROST OPERATION COMPLETION Defrost operation is released when the conditions become as shown in Table 8. (Table 8 : Defrost Release Condition) Release Condition Outdoor heat exchanger temperature sensor value is higher than 10 C or Compressor operation time has passed 15 minutes

29 3. Defrost Flow Chart The defrosting shall proceed by the integrating operation time and outdoor heat exchanger temperature as follows. Heating operation start : Compressor ON (Not defrosted for 6 or 10 minutes) Compressor integrating operation: 45 minutes and over Outdoor temp. > 3 C 3 = > Outdoor temp. > -1 C -1 > = Outdoor temp. > -5 C -5 C > Outdoor temp. Outdoor heat exchanger temperarure: Below -8 C Outdoor heat exchanger temperarure: Below -12 C Outdoor heat exchanger temperarure: Below -14 C Outdoor heat exchanger temperarure: Below -16 C Defrost start Defrost Indicator: [Operation lamp] 9 sec ON / 1 sec OFF 3 sec later Compressor OFF 3 sec later Outdoor fan motor OFF 28 sec later 4-way valve OFF 34 sec later compressor ON (Frequency : 90 Hz) Outdoor heat exchanger temperature: Over 10 C or Compressor ON time: Over 15 minutes Defrost end 01-26

30 19. DRAIN PUMP OPERATION ( For AU type ) During Cooling / Dry operation 1. When the compressor starts, the drain pump starts simultaneously. 2. The drain pump operates continuously for 3 minutes after the compressor is turned off. 3. When the compressor stops by the "Indoor heat exchanger de-icing function", the drain pump is turned off in 1 hour after the compressor stops. 4.When the water level in the drain pan rises up and then the float switch functions: 1 2 The compressor, indoor and outdoor fan motor operation are stopped. Drain pump operates continuously for 3 minutes after the float switch is turned off. (Almost condensing water may be drained) 5. When the float switch turns ON continuously for 3 min., "FAILURE INDICATION" operates. 6. When the float switch turns OFF within 3 min., the unit starts cooling operation. During Heating / Fan / Stop operation 1.When the water level in the drain pan rises up and then the float switch functions: 1 Drain pump operates continuously for 3 minutes after the float switch is turned off. (Almost condensing water may be drained) 2. When the float switch turns ON continuously for 3 min., "FAILURE INDICATION" operates. 20. ENERGY SAVE FUNCTION (For AR type) 1. During Cooling / Dry operation: The thermostat temperature setting increases by 1 degc as soon as the ENERGY SAVE button is pressed, and then increases by 1 degc after 1 hour later. Afterwards, energy consumption is saved by continuing to cool or dry at a thermostat temperature of 2 degc higher than setting temperature. ENERGY SAVE ON 1hour. 1 degc 2 degc Setting temperature 2. During Heating operation: The thermostat temperature setting decreases by 1 degc as soon as the ENERGY SAVE button is pressed, and then decreases by another 1 degc every 30 minutes. Afterwards, energy consumption is saved by continuing to heat at a thermostat temperature of 4 degc lower than setting temperature. 1degC 2degC 3degC 4degC Setting temperature ENERGY SAVE ON 30min. 1 hour. 1 hour 30 min

31 21. VARIOUS PROTECTIONS 1. DISCHARGE GAS TEMPERATURE OVER RISE PREVENTION CONTROL The discharge gas thermosensor (discharge thermistor : Outdoor side) will detect discharge gas temperature. When the discharge temperature becomes higher than 105 C,the compressor frequency is decreased 20 Hz, and it continues to decrease the frequency for 20 Hz every 120 seconds until the temperature becomes lower than 105 C. When the discharge temperature becomes lower than 95 C,the control of the compressor frequency is released. When the discharge temperature becomes higher than 110 C,the compressor stops. When the discharge temperature becomes lower than 80 C,the compressor operates. 2. CURRENT RELEASE CONTROL The compressor frequency is controlled so that the outdoor unit input current does not exceeds the current limit velue that was set up with the outdoor temperature. The compressor frequency returns to the designated frequency of the indoor unit at the time when the frequency becomes lower than the release value. 3. ANTI-FREEZING CONTROL (Cooling mode) The compressor frequency decreases on cooling mode when the indoor heat exchanger temperature sensor detects the temperature lower than 3 C or 2-way valve temperature sensor detects the temperature lower than 2 C. (Fig 13 : Anti-freezing Protection Operation / Release Temperature) Te : 3 C or Tv : 2 C Te : 6 C and Tv : 5 C Te : 8 C The compressor frequency is decreased 10Hz every 120 seconds. Hold Compressor ON: The compressor frequency is increased 5Hz every 120 seconds. Compressor OFF: Hold Release of protection Te : Indoor heat exchange temperature Tv : 2-way valve temperature 01-28

32 4. COOLING PRESSURE OVER RISE PROTECTION When the outdoor unit heat exchange sensor temperature rises to 70.5 C or greater, the compressor is stopped and error display is indicated. 5. HIGH TEMPERATURE RELEASE CONTROL ( HEATING MODE ) On heating mode, the compressor frequency is controlled as following based on the detection value of the indoor and outdoor heat exchanger temperature sensor. (Fig 14 : Heating Overload Protection Control) Te : 63 C Compressor is OFF The compressor frequency is decreased 10Hz every 120 seconds. *1 Te : 54 C 48 C *2 Te : 50 C 44 C Hold Compressor ON: The compressor frequency is increased 5Hz every 120 seconds. Compressor OFF: Release of protection *1 Th> = -9 C ---> Te : 54 C -9 C>Th>-11 C = ---> Te : 54 C -11 C>Th>-13 C = ---> Te : 52 C -13 C>Th>-15 C = ---> Te : 50 C -15 C>Th ---> Te : 48 C Th : Outdoor heat exchange temperature Te : Indoor heat exchange temperature *2 Th> = -9 C ---> Te : 50 C -9 C>Th>-11 C = ---> Te : 50 C -11 C>Th>-13 C = ---> Te : 48 C -13 C>Th>-15 C = ---> Te : 46 C -15 C>Th ---> Te : 44 C 01-29

33 R410A Universal Floor / Ceiling Duct / Cassette Wall Mounted / Floor type INVERTER (MULTI ) 2. TROUBLE SHOOTING

34 2. TROUBLESHOOTING 2-1 ERROR DISPLAY INDOOR UNIT DISPLAY 1. ERROR DISPLAY Please refer the blinking pattern as follows. For AS*7/ 9/ 12LMACW Large division indication Error contents LED indication Error contents Operation lamp : Red lamp Timer lamp : Green lamp Small division indication LED indication : Fast flashing : Slow flashing Trouble shooting Thermistor error (indoor unit) Red lamp Green lamp (2 times) Room temperature thermistor error Indoor heat exchanger temperature thermistor error Red lamp Green lamp Red lamp Green lamp (2 times) (3 times) 3 4 Control unit error (indoor unit) Red lamp Green lamp (4 times) Forced auto switch error Power supply frequency detection error Red lamp Green lamp Red lamp Green lamp (2 times) (4 times) Serial error Red lamp Green lamp (5 times) Communication error (Serial reverse transfer error) Outdoor communication signal error (Forward transfer signal error) Red lamp Green lamp Red lamp Green lamp (2 times) (3 times) 2 11 Fan motor error (indoor unit) Red lamp Green lamp (6 times) Indoor fan motor lock error Indoor fan motor speed error Red lamp Green lamp Red lamp Green lamp (2 times) (3 times) 10 Outdoor discharge pipe temperature thermistor error Red lamp Green lamp (2 times) 8 Outdoor heat exchanger temperature thermistor error Red lamp Green lamp (4 times) 5 Thermistor error (outdoor unit) Red lamp Green lamp (2 times) Outdoor temperature thermistor error Compressor temperature thermistor error Red lamp Green lamp Red lamp Green lamp (6 times) (8 times) way valve temperature thermistor error Red lamp Green lamp (9 times) 21 3-way valve temperature thermistor error Red lamp Green lamp (10 times) 22 Pressure switch error Red lamp Green lamp (3 times) Pressure switch error Red lamp Green lamp (2 times) 13 Control unit error (outdoor unit) Red lamp Green lamp (4 times) Connected indoor unit error Outdoor unit fan motor error Red lamp Green lamp Red lamp Green lamp (2 times) (3 times) Inverter error Red lamp Green lamp (5 times) IPM error Compressor rotor location cannot detect (permanent stop) Red lamp Green lamp Red lamp Green lamp (2 times) (5 times) Indoor EEPROM abnormal error Red lamp Green lamp Indoor EEPROM abnormal (Model No.) Red lamp Green lam (2 times) 9 When an error occurs, "Large division indication" is indicated first. Secondly, "Small division indication" is indicated by pushing "Test run" button of remote controller

35 For AB*14/ 18L / AU*12L - 18L The OPERATION, TIMER and SWING lamps operate as follows according to the error contents. Error contents Indoor EEPROM abnormal (Model No.) Room temperature thermistor error (Opened) Room temperature thermistor error (Short circuited) Indoor heat exchanger temperature thermistor error (Opened) Indoor heat exchanger temperature thermistor error (Short circuited) Error display OPERARION TIMER SWING (RED) (GREEN) (ORANGE) 2 times 2 times 3 times 3 times Trouble shooting Water drain abnormal 4 times 6 Communication error (Serial reverse transfer error) Outdoor communication signal error (Forward transfer signal error) Indoor fan error 5 times 5 times 6 times Outdoor heat exchanger temperature thermistor error Outdoor temperature thermistor error Outdoor discharge pipe temperature thermistor error Compressor temperature thermistor error Pressure switch error 3 times 4 times 5 times 8 times 9 times way valve temperature thermistor error 3-way valve temperature thermistor error Connected indoor unit error 2 times 3 times 4 times IPM error Compressor rotor location cannot detect (permanent stop) Outdoor unit fan motor error 10 times 13 times 14 times Main CPU-Sub CPU communication error 5 times 24 : Fast flashing : Slow flashing : Off 02-02

36 For AS*A09-18LACM The OPERATION, TIMER, AIR CLEAN and COIL DRY lamps operate as follows according to the error contents. Error contents Communication error (Serial reverse transfer error) Outdoor communication signal error (Forward transfer signal error) Communication error (indoor unit remote control) Room temperature thermistor error Indoor heat exchanger temperature thermistor (middle) error Outdoor discharge pipe temperature thermistor error Outdoor heat exchanger temperature thermistor error Outdoor temperature thermistor error Heat sink temperature thermistor error Compressor temperature thermistor error 2-way valve temperature thermistor error 3-way valve temperature thermistor error Forced auto switch error Power supply frequency detection error VDD permanence stop protection (Electric air clean) Reverse-VDD permanence stop protection (Electric air clean power supply circuit abnormal) IPM error CT error Compressor rotor location cannot detect (permanent stop) Outdoor unit fan motor error Connected indoor unit error Main CPU-Sub CPU communication error Indoor fan motor abnormal Discharge temperature error Exessive high pressure protection on cooling Error display OPERATION TIMER AIR CLEAN or QUIET COIL DRY (RED) (GREEN) (GREEN) (ORANGE) 2 times 2 times 3 times 4 times 5 times 8 times 2 times 2 times 3 times 3 times 2 times 3 times 3 times 3 times 4 times 3 times 7 times 3 times 8 times 3 times 2 times 3 times 3 times 4 times 2 times 4 times 4 times 4 times 7 times 4 times 8 times 5 times 2 times 5 times 3 times 5 times 5 times 5 times 6 times 5 times 7 times 5 times 6 times 8 times 2 times 3 times 7 times 2 times 7 times 3 times Trouble shooting Pressure switch error 7 times 5 times 13 Active filter module (AFM) error Indoor EEPROM abnormal (Model No.) 8 times Continuous blink 2 times 3 times Continuous blink Continuous blink Continuous blink 16 9 : 0.5s ON / 0.5s OFF (Flash) : OFF 02-03

37 For AG*F09-14LAC The OPERATION, TIMER and 10 C HEAT lamps operate as follows according to the error contents. Error contents Communication error (Serial reverse transfer error) Outdoor communication signal error (Forward transfer signal error) Communication error (indoor unit remote control) Room temperature thermistor error Indoor heat exchanger temperature thermistor (middle) error Outdoor discharge pipe temperature thermistor error Outdoor heat exchanger temperature thermistor error Outdoor temperature thermistor error Forced auto switch error Main relay welded IPM error CT error Compressor rotor location cannot detect (permanent stop) Outdoor unit fan motor error Indoor fan lock error Error display OPERATION TIMER 10 C HEAT (GREEN) (ORANGE) (GREEN) 2 times 2 times 3 times 4 times 5 times 8 times 2 times 2 times 3 times 3 times 2 times 3 times 3 times 3 times 4 times 4 times 2 times 4 times 3 times 5 times 2 times 5 times 3 times 5 times 5 times 5 times 6 times 6 times 2 times Trouble shooting Indoor UPPER fan speed error Indoor LOWER fan lock error 6 times 3 times 6 times 2 times 10 Indoor LOWER fan speed error Damper error (UPPER & LOWER air flow) Damper error (UPPER air flow) Damper error Discharge temperature error 6 times 3 times 6 times 4 times 6 times 5 times 6 times 5 times 7 times 2 times Exessive high pressure protection on cooling 7 times 3 times 31 Indoor EEPROM abnormal (Model No.) Continuous blink Continuous blink Continuous blink 9 : 0.5s ON / 0.5s OFF (Flash) : OFF 02-04

38 For AU*F09-18LAL AB*F14/ 18LAT The OPERATION, TIMER and FILTER lamps operate as follows according to the error contents. Error contents Communication error (Serial reverse transfer error) Outdoor communication signal error (Forward transfer signal error) Communication error (Main PCB Display PCB) Communication error (Main PCB Display PCB) Communication error (indoor unit remote control) Room temperature thermistor error Indoor heat exchanger temperature thermistor (middle) error Indoor heat exchanger temperature thermistor (inlet) error Outdoor discharge pipe temperature thermistor error Outdoor heat exchanger temperature thermistor error Outdoor temperature thermistor error Error display OPERATION TIMER FILTER (GREEN) (ORANGE) (RED) 2 times 2 times 2 times 3 times 3 times 3 times 2 times 3 times 4 times 5 times 6 times 7 times 8 times 2 times 3 times 4 times 2 times 3 times 4 times Trouble shooting Heat sink temperature thermistor error 3 times 7 times 19 Compressor temperature thermistor error 3 times 8 times 12 2-way valve temperature thermistor error 3 times 2 times 21 3-way valve temperature thermistor error 3 times 3 times 22 Forced auto switch error 4 times 2 times 25 IPM error 5 times 2 times 14 CT error 5 times 3 times 15 Compressor rotor location cannot detect (permanent stop) 5 times 5 times 17 Outdoor unit fan motor error 5 times 6 times 18 Connected indoor unit error 5 times 7 times 23 Main CPU-Sub CPU communication error 5 times 8 times 24 Indoor fan motor abnormal 6 times 2 times 3 times 10 Discharge temperature error 7 times 2 times 30 Exessive high pressure protection on cooling 7 times 3 times 31 4-way valve error 7 times 4 times 32 Pressure switch error 7 times 5 times 13 Compressor temperature error 7 times 6 times 33 : 0.5s ON / 0.5s OFF (Flash) : OFF 02-05

39 2-1-2 OUTDOOR UNIT DISPLAY 1. ERROR DISPLAY Error Contents Outdoor communication signal error (Forward transfer signal error) Outdoor discharge pipe temperature thermistor error 2 times blink OFF OFF 8 Outdoor heat exchanger temperature thermistor error 3 times blink OFF OFF 5 Outdoor temperature thermistor error 1 times blink OFF OFF LED A B C OFF 1 times blink OFF OFF OFF 1 times blink 4 times blink OFF OFF Trouble shooting way valve temperature thermistor A error 2-way valve temperature thermistor B error 2-way valve temperature thermistor C error 3-way valve temperature thermistor A error 3-way valve temperature thermistor B error 3-way valve temperature thermistor C error Compressor temperature thermistor error Heat sink temperature thermistor error Pressure switch 1 error Pressure switch 2 error Connected indoor unit error IPM error Compressor rotor location cannot detect (permanent stop) Compressor Start-up error (permanent stop) Outdoor unit fan motor error Main CPU - sub CPU communication error 4-way valve error 5 times blink OFF OFF OFF OFF OFF 5 times blink OFF OFF OFF 5 times blink 6 times blink OFF OFF OFF 6 times blink OFF 6 times blink 7 times blink OFF OFF 8 times blink OFF OFF 9 times blink OFF OFF 10 times blink OFF OFF 11 times blink OFF OFF 12 times blink OFF OFF 13 times blink OFF OFF 14 times blink OFF OFF 15 times blink OFF OFF 17 times blink OFF OFF 19 times blink OFF OFF ERROR DISPLAY METHOD Outdoor LED Blink (1 to 18 times) 0.5sec ON / 0.5sec OFF blinking ON 0.5sec 0.5sec 2sec OFF 3. NORMAL OPERATION DISPLAY Operation LED A LED B LED C LED D Normal operation Continuously lighting Protected operation 5sec ON / 1sec OFF OFF OFF OFF 02-06

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