1 Universal Split Systems If there is a fault on any LG Universal unit, a two digit number will appear on the remote controllers led display. If the unit does not have a remote controller the fault will be displayed using the LED's on the front of the indoor unit. Tens Units Units Digit (Red) Tens Digit (Green) The Units digit of the fault code is shown by the power led which has the following symbol by it This is usually Red, but on a few models it is Green. The Tens digit will be displayed by one other led, usually the Sleep or Filter lamp. Error Indicator: The function provides self-diagnosis and displays an error code if there is any trouble. Error codes are displayed on the Indoor unit s Wired Remote as CH**, and/or Fascia Display. In addition, the code is indicated via LED s on the outdoor unit control board. If more than two troubles occur simultaneously, the lower number of error code is displayed first. After an error occurs, if error is released, error LED is also released simultaneously. Indoor Unit Faults: Error code Contents Case of error 01 Air sensor (open/short) Open / Short circuit Off 02 Inlet pipe sensor Open / Short circuit Off 03 Communication(Indoor Wired R/Control) 04 Drain pump / Float switch Communication Poorly Float switch Open circuit (High level water alarm) Indoor Status 05 Communication(Indoor Outdoor) Communication Poorly Off 06 Outlet pipe sensor Open / Short circuit Off 07 Different operation mode Indoor units set in different operation modes Off 09 Checksum Error Defective PCB or EEPROM Connections Off 10 BLDC Motor Fan Lock (Indoor) Fan Motor or PCB Defective Off HL Hard Lock (Controlled by External Source) Controlled by Dry Contact or Central Controller Off CL Child Lock Function selected Not an error, press Timer & Min buttons simultaneously for 3 seconds to toggle On/Off On Po Jet Cool Mode selected Not an error, press Jet Cool button to toggle On/Off On Off Off - 1 -
2 Outdoor Unit Faults can also be read from the outdoor unit PCB using the flashing LED s as below: Error code Contents LED01G (Red) LED02G (Green) 21 IPM Fault (Compressor Over current) 2 times 1 time Case of Error Compressor malfunction, IPM Fault Outdoor Status 22 CT 2 (Max. Current) 2 times 2 times Current is 14A Off 23 DC Link Low Volt. 2 times 3 times DC Link volt. Is 140V Off 24 Low / High Pressure 2 times 4 times Low / High press switch OPEN Off 25 AC Low / AC High Volts. 2 times 5 times Abnormal AC volt. Input. Off 26 DC Compressor Position 2 times 6 times Off 27 PSC Fault (Reactor) 2 times 7 times Off 28 DC Link High Volts 2 times 8 times Off Off 29 COMP Over Current 2 times 9 times Inverter Compressor input current is over 30A 32 Discharge Pipe Temp. High (INV) 3 times 2 times D-Pipe Temp (Inv.) >105 C Off 33 Discharge Pipe Temp. High (Cons.) 3 times 3 times D-Pipe Temp (Const) >105 C Off 39 Communication Error 3 times 9 times Communication Error Between PFC and INV PCB s 40 CT Circuit 4 times CT Circuit malfunction Off 41 D-Pipe sensor INV. (Open/Short) 4 times 1 time Open / Short circuit. Off 44 Air sensor (Open/Short) 4 times 4 times Open / Short circuit Off 45 Cond. Pipe Sensor (Open/Short) 4 times 5 times Open / Short circuit Off 46 Suction Pipe Sensor (Open/Short) 4 times 6 times Open / Short circuit Off 47 D-pipe Sensor Cons. (Open/Short) 4 times 7 times Open / Short circuit Off 48 D-Pipe & Air Sensor (Open) 4 times 8 times Dual Sensor unplugged Off 51 Over Capacity 5 times 1 times Over Load Combination Off Communication Error (Main micom Sub micom) Communication Error (Indoor Outdoor) Outdoor 3-Phase Power Supply Reverse Phase / Missing Phase 5 times 2 times Poor/Loss of Communication Off 5 times 3 times Poor/Loss of Communication Off 5 times 4 times Incorrect Wiring Off 60 EEPROM Check Sum 6 times Check Sum Mis-Match Off 61 Cond. Pipe Sensor Temp. High 6 times 1 time Cond. Temp. High Off 62 Heat Sink Sensor Temp. High 6 times 2 times Heat Sink Temp. High Off 63 Cond. Pipe Sensor Temp. Low 6 times 3 times Cond. Temp. Low Off 65 Heat Sink Sensor (Open/Short) 6 times 5 times Open / Short circuit Off 67 Outdoor BLDC Fan Lock 6 times 7 times Fan Motor/Circuit Problem Off 73 PFC Fault Error (S/W) 7 times 3 times Inverter PCB input current is over 48A (Peak) for 2ms 105 Comms. Error (Main board Fan board) 6 times 5 times Poor/Loss of Communication Off [The codes are explained in detail on the following pages] Off Off Off - 2 -
3 Fault code 01 Is a fault with the Indoor unit return air Thermistor Unplug the Thermistor from the PCB and Check its resistance check against this graph: Resistance of Air thermistor Resistance k Ohms Alternatively the sensor can be tested while still connected to the PCB measure the DC voltage across the resistor and check it against the graph below. 3.5 Voltage across Air thermistor Volts DC
4 Fault code 02 Is a problem with the Indoor unit coil inlet Thermistor Unplug the Thermistor from the indoor PCB and Check its resistance against this graph: Coil thermistor resistance k Ohms 20 Resistance k Ohms Alternatively the sensor can be tested while still connected to the PCB measure the DC voltage across the resistor and check it against the graph below. 4.0 Voltage across coil thermistor 3.0 Volts DC Temp - 4 -
5 Fault Code 03 LG Air Conditioning - Universal Split Fault Codes Sheet Indicates a wiring error between the remote controller and the fan coil, this is most common in group control applications where more than 1 fan coil is connected to a single remote controller. Firstly check the wiring has been done correctly see below Next check the switch in the back of the remote controller, it has to be set to Group or GR1 for group control, the Factory setting is Single or SG, after setting the switch reset the power for 2 minutes. If the fault does not clear, check the Voltage of the remote controller cable. The Red cable is 12 Vdc The Brown or Black cable is Ground or 0 Vdc The Yellow is signal (Comms.) Test Voltage across the Brown/ Black cable and the Red, this should be 12 Vdc Voltage from Yellow to Brown/Black this should be fluctuating between 8 12 Vdc
6 Fault Code 04 LG Air Conditioning - Universal Split Fault Codes Sheet Fault code CH04 indicates that the float switch of the fan coil has risen. On fan coils without a drain pump it indicates that the jumper (blue plug with 30mm of blue wire) in terminal CN FLOAT is missing. If the fan coil is running and the float rises it will take 3 ½ minutes for the fault to show on the controller, this is to give the unit time to pump excess water away. Once the float falls, (or the jumper is put back into the board) it will not be possible to clear the fault for 40 seconds. It is considered good practice to reset the power to clear this fault code. Fault Code 05 These error codes indicate a communication fault between the indoor and outdoor units; it appears approximately 5 minutes after powering up the system. The communication between the units is a fluctuating DC voltage commonly called a serial signal, it can be easily lost if the wiring is not done correctly. If there is a communication error fault CH05 will appear on the Wired Remote within 5 mins of powering up the system. Testing First check for any isolator or switches on the interconnecting cable and ensure both the Comms and Neutral are un-switched. Then confirm connections are correct and secure at both the Indoor and Outdoor units. Check if any other devices are connected on the interconnecting cable, remove such equipment, and connect them elsewhere. Open the outdoor unit to reveal the Main PCB and identify the Green and Red LED s on that board. The Green LED should be lit steadily if power is present, the Red LED should be doing one of the following:- 1. If the outdoor unit receives communications from the indoor unit, the Red LED should be flickering. 2. If the Red LED glows steadily without flickering, then no communication is being received from the indoor unit. Check the interconnecting cables for any short or open circuits, not forgetting the connecting cables between the terminal rail and PCB on both Indoor & Outdoor units. Repair wiring, or replace the Indoor PCB as necessary. 3. If the Red LED does not light at all, then the fault is with the outdoor PCB, or connections to it. Confirm that the Outdoor PCB is receiving power (Green LED lit). Repair wiring, or replace the Outdoor PCB as necessary. 4. If Condition 3 above applies please check the following and repair/replace as required. Failure to do so may result in the new PCB becoming damaged. a. Check PCB Control Fuse, if blown, identify cause and rectify. b. Check Fan Motor(s). i. AC Motors for Short Circuits or Down to Earth. ii. BLDC Motors (See Product Technical Update - Sheet 83). c. Reversing Valve Coil, for Short Circuit or Down to Earth. d. Reactor, for Open Circuit. e. Electronic Expansion Valve Down to Earth (See Product Technical Update - Sheet 96). f. Compressor, for Short Circuit or Down to Earth. Additional Tests: Set your meter to DC Volts, Test between terminals 2 and 3 of the outdoor unit and wiring terminals, you should see 0-75 Vdc, it will be fluctuating rapidly. If this signal voltage is not present disconnect the wire from terminal 3 of the inter unit cabling, and test terminal 3 Voltage again. If Voltage is still not present, the outdoor PCB must be faulty. If this signal voltage is detected leaving the outdoor unit, reconnect wire 3 and check what is being received at the indoor unit. Disconnect wire 3 from the indoor terminal block and check the DC Voltage between this wire and terminal 2. It should be the same as what you saw at the outdoor unit, if not your wiring is at fault. With the wire still disconnected, check between terminals 2 & 3. You should see a relatively steady voltage in the range of Vdc (Negative). Any significant difference would indicate a faulty Indoor PCB. Important: Comms Errors are also created on Universal Synchro Systems when they are not configured/commissioned correctly. Please follow the correct Synchro Commissioning Procedures
7 Fault code 06 Is a problem with the Indoor unit coil outlet Thermistor Unplug the Thermistor from the indoor PCB and Check its resistance against this graph: Coil thermistor resistance k Ohms 20 Resistance k Ohms Alternatively the sensor can be tested while still connected to the PCB measure the DC voltage across the resistor and check it against the graph below. 4.0 Voltage across coil thermistor 3.0 Volts DC Temp - 7 -
8 Fault Code 07 On Multi split systems, the first unit switched on is the cool heat master, the master tells the condensing unit what to do. If the condenser is in heating and any slave is set to cooling a CH07 fault code will appear. Likewise if the condenser is in cooling and any slave is set to heating a CH07 fault code will appear. If the master is switched off the next longest running unit becomes the master. To clear the fault turn off the unit at the remote controller, turn it back on again and change the mode Fault Code 09 Check for loose connections or dry joints where EEPROM connects on Main PCB, repair if possible, if not replace PCB. Fault Code 10 Indoor Fan Motor problem, See Fault Code 67 for Troubleshooting help. Fault Code 21 This fault is caused by an over current in the inverters DC power circuit. If the DC part of the circuit exceeds 14 Amps fault code 21 will be displayed. This is caused by either the inverter PCB being faulty or compressor being short circuit or down to earth. Disconnect the electrical connections to the compressor and check the resistance of the compressor windings, measure from U to V, V to W and W to U the values should be between 0.25 and 5 Ohms each. The next test is to measure the resistance of the compressor windings to earth. Using a Megger (High Voltage Meter) measure the resistance from any of the 3 compressor terminals to an Earth point (pipe work). The value should exceed 2 M Ohms. If the compressors fail these tests it will need replacing. If the compressor is OK you will need to check the inverter output voltages. Please see section on Inverter testing at end. Fault Code 22 This fault is caused by a Compressor over-current see code 21 Please see section on Inverter testing at the end. Fault Code 23 This fault indicates a fault in the DC part of the inverter circuit; it means that the Dc Voltage to the inverter is below 140 V Dc, it should be 370 V for single phase machines and 600 V dc for three phase machines. The - 8 -
9 fault is usually caused by the inverter charging resistor being faulty; this component is mounted on the outdoor unit PCB and cannot be replaced. Start the unit running and measure the DC Voltage supply to the inverter. This is easiest to measure at the inverter capacitors; it should be 370 V for single phase machines and 600 V dc for three phase machines See section on Inverter testing at the end. Fault Code 24 If the unit has a low or high pressure fault CH24 will display. If the LP switch goes open circuit the compressor will be stopped, on inverter units this can take up to 30 seconds. The LP Switch goes open circuit when the suction pressure falls below 0.5 bar the Hp Switch opens at 41 bar. The fault code will only occur if the pressure switch is tripped 5 times within 1 hour, this can only be reset by switching off the power to the condensing unit for 2 minutes. If your unit does not have any pressure switches it may still have a plug on the outdoor unit PCB labelled CN Press, it should have a link plugged in, if the link is missing it must be replaced. Fault Code 25 This fault indicates a problem with the incoming power supply to the system. Measure the Voltage of the incoming supply, if it is less than 140V AC or greater than 300V AC this fault will occur. If the Power supply is correct and the fault persists replace the outdoor unit PCB. Fault Code 26 This fault indicates a problem with the positioning system of the inverter compressor, which indicates a seized compressor. Firstly check the compressor is correctly connected. Next reset the power supply to the system ensuring the power is left off for 5 minutes. Start the unit up, after a couple of minutes the compressor will try and start, you can hear a high pitched whine when it does. If the compressor does not start turning within a couple of seconds the whining will stop. The compressor will try to start 3 times then the fault will recur. Fault Code 27 This fault indicates a problem with the inverter module, see section on testing inverters. Also check reactor is connected to the PCB and check its resistance it should be well under 1 Ohm. Fault Code 28 This fault indicates a problem in the DC part of the inverter circuit; it means that the DC Voltage to the inverter is too high. Start the unit running and measure the DC Voltage supply to the inverter. This is easiest to measure at the inverter capacitors; it should be 370 V for single phase machines and 600 V dc for three phase machines. See section on Inverter testing at end. Fault Code 29 Check and correct for any: 1. Overload operation (Pipe restrictions / Restricted Airflow / EEV defect / Refrig. Overcharged) 2. Compressor damage (Insulation damage / Motor damage) 3. Input Voltage Low 4. ODU Inverter PCB assembly damage - 9 -
10 Fault Code 32 Indicates that the Inverter compressor discharge temperature is high (above 105ºC) this usually indicates the system has either a shortage of refrigerant or a blockage in the system. Reset the power to the unit for 2 minutes and restart it. If the compressor starts measure the compressor discharge temperature, typically it should not be more than 50ºC above the ambient temperature around the condensing unit. It may take quite a long period for the compressor to overheat so don t just start the unit and run. Make sure you check the unit is operating correctly and providing adequate cooling. Fault Code 33 Indicates that the fixed speed compressor discharge temperature is high (above 105ºC) this usually indicates the system has either a shortage of refrigerant or a blockage in the system. Reset the power to the unit for 2 minutes and restart it, If the compressor starts measure the compressor discharge temperature, typically it should not be than 50ºC above the ambient temperature around the condensing unit. It may take quite a long period for the compressor to overheat so don t just start the unit and run. Make sure you check the unit is operating correctly and providing adequate cooling. Fault Code 39 Check and repair or replace as necessary: 1. PCB defect / Wiring defect 2. Different Micom Software Version 3. ODU Inverter PCB assembly damage Fault Code 40 This fault indicates a problem with the current drawn by the AC part of the inverter circuit. Refer to the inverter testing procedure at the end
11 Fault Code 41 LG Air Conditioning - Universal Split Fault Codes Sheet This fault indicates an Inverter Compressor discharge Thermistor fault Unplug the Thermistor and Check its resistance check against this graph: Resistance of discharge pipe thermistor 250 resistance kohms temp Alternatively the sensor can be tested while still connected to the PCB measure the DC voltage across the resistor and check it against the graph below. Voltage across discharge thermistor Voltage DC Temp
12 Fault Code 44 Indicates a fault with the Outdoor unit air Thermistor Unplug the Thermistor from the PCB and Check its resistance check against this graph: Resistance of Air thermistor Resistance k Ohms Alternatively the sensor can be tested while still connected to the PCB measure the DC voltage across the resistor and check it against the graph below. 3.5 Voltage across Air thermistor Volts DC
13 Fault Code 45 Indicates a problem with the condenser coil outlet Thermistor Unplug the Thermistor from the indoor PCB and Check its resistance against this graph: Coil thermistor resistance k Ohms 20 Resistance k Ohms Alternatively the sensor can be tested while still connected to the PCB measure the DC voltage across the resistor and check it against the graph below. 4.0 Voltage across coil thermistor 3.0 Volts DC Temp
14 Fault Code 46 Indicates a problem with the compressor suction Thermistor Unplug the Thermistor from the indoor PCB and Check its resistance against this graph: Coil thermistor resistance k Ohms 20 Resistance k Ohms Alternatively the sensor can be tested while still connected to the PCB measure the DC voltage across the resistor and check it against the graph below. 4.0 Voltage across coil thermistor 3.0 Volts DC Temp
15 Fault Code 47 LG Air Conditioning - Universal Split Fault Codes Sheet Indicates an Inverter Compressor discharge Thermistor fault Unplug the Thermistor from the PCB and Check its resistance check against this graph: Resistance of discharge pipe thermistor 250 resistance kohms temp Alternatively the sensor can be tested while still connected to the PCB measure the DC voltage across the resistor and check it against the graph below. Voltage across discharge thermistor Voltage DC Temp
16 Fault Code 48 LG Air Conditioning - Universal Split Fault Codes Sheet This fault indicates that the compressor discharge sensor and the condenser air temperature sensors are both unplugged. Both these sensors are connected to a single connector on the outdoor unit PCB, plug it in and the fault will go away. Fault Code 51 This indicates that the capacity of the indoor unit / units is too great for the condensing unit. Make a note of the model number of the fan coil/coils and the condensing unit and check with the equipment supplier that the units you have installed can be connected together. Fault Code 52 This fault code indicates a communication error between the Main and Sub micom (CPU s) on the outdoor unit main PCB. Check for evidence of damage, if none found reset power, if fault reappears replace pcb. Fault Code 53, (see fault code 05) Fault Code 54 This fault normally indicates a lost phase or the phases are reversed on the power supply to 3 phase units. Check all 3 phases are available at the power terminals to the unit. You should have 415v AC across red to blue, blue to yellow and red to yellow, If this is all ok turn off the power and swap the red and yellow cores of the power supply cable over, reset the power and the unit will operate. Fault Code 60 Check the correct PCB assembly has been installed, check for dry joints, replace outdoor unit PCB if nothing is found. Fault Code 61 Indicates the outdoor unit condenser coil temperature is high above 65ºC, this will usually be experienced in cooling mode and will indicate insufficient air being drawn over the coil. Check there are no blockages to the coil (carrier bags dirt etc); check the air flow is not short circuiting from the front to the back of the unit and check for Nitrogen in the system. Fault Code 62 Indicates the outdoor unit Inverter heat-sink thermistor has detected that the heat sink is overheating 85ºC. This is usually caused by debris blocking the heat-sink fins or an error with the thermistor, see code
17 Fault Code 65 LG Air Conditioning - Universal Split Fault Codes Sheet Is a problem with the Inverter PCB heat sink thermistor for the heat sink on the outdoor unit PCB, unplug the Thermistor from the PCB and Check its resistance against this graph: resistance of Heat sink thermistor Resistance k Ohms Alternatively the sensor can be tested while still connected to the PCB measure the DC voltage across the resistor and check it against the graph below. 3.5 Voltage across Heat Sink thermistor 3.0 Volts DC
18 Fault Code 67 LG Air Conditioning - Universal Split Fault Codes Sheet This is a problem with the Outdoor Fan Motor, where rotation is not detected, and could be result of either Mechanical or Electrical failure. Check that motor is free to rotate and not seized. Check the motor is electrically sound, windings not Open or Short circuit. Check power output from PCB to fan motor. Check rotation feedback circuit. More modern units use inverter fan motors, which are powered by a DC Voltage. In reality these fan motors are AC fan motors with a small inverter-type circuit build inside. This inverter circuit is integrated with the fan motor and impossible to replace, you have to replace the entire fan motor. Similar to inverter-controlled compressors, the speed of these fan motors can be changed to whatever is needed (within certain limits). In practice the change in fan speed is not continuous but certain fixed speeds have been programmed inside the AC unit. This type of fan control can be recognized by the 5 wires coming from the fan on a connector with 7 possible connections These fan motors have 5 connections, power supply is 360VDC, and the speed is determined by a voltage ranging from 0 (0 rpm) to 5VDC (max speed) and a power supply for the internal electronics of 15VDC. These motors are easy to identify from a wiring diagram, they always show them not connected to anything as the electronics are too difficult to draw on the diagram. Detail of Hall Sensors A Hall effect sensor works like a magnetic reed switch, one end is wired to a 15 Vdc supply and the other is the feed back to the PCB. As a magnet mounted on the rotor of the motor passes the hall sensor the reed switch closes momentarily and allows the DC signal to flow through it back to the PCB. The hall sensors have a resistance so the voltage fed back to the PCB will only be approximately 12V DC. The pcb will know what speed the fan motor should be turning as it is also controlling the output of the inverter, if there is a discrepancy between the inverter output RPM and the feedback from the hall sensors a fault will occur. Usually the fan will rev very fast for a few seconds then stop this indicates hall sensor problems. Replace either Motor or Fan PCB as necessary. Fault Code 73 Check and repair or replace as necessary: 1. Overload operation (Pipe restrictions / Restricted Airflow / EEV defect / Refrig. Overcharged) 2. Compressor damage (Insulation damage / Motor damage) 3. Input Voltage abnormal 4. Power supply wiring abnormal 5. Inverter PCB assembly damage Fault Code 105 This is due to a Communication error between the Main outdoor PCB and Fan PCB. Check for Open/Short of communication line between the Main and Fan PCB s. Check communication cable plug connections. Is the communication LED on?
19 Testing Inverters It is best to test inverters with no compressors connected especially if you expect the compressor is at fault. But if you remove the wires from the compressor and try to run the systems a fault will be displayed. The fault is caused by the inverter PCB being able to detect whether a compressor is connected or not. Most modern inverters are able to detect whether the compressor has been disconnected in only a few seconds making testing very difficult. Testing can be done in two ways: Firstly the hard way You will need a digital multi meter with a min max function, Turn off the power Disconnect the compressor either from the PCB or at the compressor terminals. Connect your meter to two of the phases (Red to blue) set your meter to record max and min voltage Power up and Start the unit Let the inverter start and watch the Voltage rise Record the maximum Voltage The inverter will stop after a few seconds and the voltage will fall to 0 Swap the leads to measure the next two phases (Red to Yellow). Measure as before Repeat for the last two phases Blue to Yellow. The readings of maximum voltage should be the same for all 3 measurements if not the inverter is faulty, the PCB will need replacing. If the readings are equal the Inverter is healthy and the compressor will need replacing. And the easy way: You will need an LG Inverter tester, Turn off the power Disconnect the compressor lead from the compressor terminals. Connect your inverter tester to all 3 leads (polarity is not important) Power up and Start the unit Let the inverter start and watch the led s All 6 must light up and should be of equal brightness The inverter will stop after a few seconds and the led s will go out If you miss the led s (they will only light for a couple of seconds) the unit will try to start again 3 times with a 3 minute delay between each test If all 6 led s DON T light up the inverter is faulty, the PCB will need replacing. If the led s all light up the Inverter is healthy and the compressor will need replacing
Split and Multi Split air conditioners Service information Programming LG wired controllers 2 New type 2 Old type 7 Fault codes 9 Wall units (single split) 9 Universal split and multi split 10 Detailed
A General Guide To Room Style Products Pipework Pipe sizes and lengths should be as the relevant Technical Guide Both lines should be insulated No line accessories or oil traps should be fitted In cooling
14. Guide 14.1 Refrigeration Cycle System In order to diagnose malfunctions, ensure the air conditioner is free from electrical problems before inspecting the refrigeration cycle. Such problems include
R22. K Control. Indoor Unit. Nomenclature. PL H 3 G K H B Compatibility Unit style Heat Pump Horse Power Control Boost Heaters R22. K Control. Outdoor Unit. Nomenclature. PU H 3 Y K A Compatibility Outdoor
SERVICE INSTRUCTION SPLIT TYPE ROOM AIR CONDITIONER WALL MOUNTEDtype INVERTER Models Indoor unit Outdoor unit ASYG07LECA ASYG09LECA ASYG12LECA ASYG14LECA AOYG07LEC AOYG09LEC AOYG12LEC AOYG14LEC R410A CONTENTS
SERVICE INSTRUCTION SPLIT TYPE ROOM AIR CONDITIONER WALL MOUNTEDtype INVERTER Models Indoor unit Outdoor unit ASU 9RLF ASURLF ASU5RLS AOU 9RLFW AOURLFW AOU5RLS R40A CONTENTS. DESCRIPTION OF EACH CONTROL
Failure code manual content 一 wall split AC series 2 二 floor standing AC series. 4 三 portable AC series.. 5 四 dehumidifer 6 五 DC inverter single split series...7 六 DC inverter multi-split series 10 1 一
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
4-2 ABNORMAL OPERATI 4-2-1 An is represented by 3 digit characters. The first 2 digit means the subsection, and the last 1 digit means the specifics. Ex.) Indoor unit Network communication Error Subsection
Website: www.andico.com.au Service manual CAUTION - BEFORE SERVICING THE UNIT, READ THE SAFETY - PRECAUTIONS IN THIS MANUAL. - ONLY FOR AUTHORISED SERVICE PERSONNEL. MODELS: MPK1-09CR-QB8 MPK1-12ER-QB6
Pocket Manual Service Diagnosis SPLIT & MULTI Service Diagnosis SPLIT & MULTI 1. Troubleshooting with LED...5 1.1 Indoor Unit... 5 1.2 Outdoor Unit... 10 2. Troubleshooting by Symptoms...11 2.1 Air conditioner
543-0032-00, 943-0032-00 User s Manual 1 Comfort Alert Diagnostics Faster Service And Improved Accuracy The Comfort Alert diagnostics module is a breakthrough innovation for troubleshooting heat pump and
Resistance The voltage in P3 and P4 in outdoor PCB is high voltage about 310V The voltage in P5 and P6 in outdoor PCB is high voltage about 310V 9.2 Troubleshooting for indoor unit E0 E1 E2 E3 E5 E6 P0
Troubleshooting 13. Troubleshooting Indoor unit s LED indication of Corona DC inverter unit MCAC-HTSM-2007-11 E0 E1 E2 E3 E5 E6 P0 P1 P2 P3 P5 EEPROM error outdoor communication error Zero-crossing examination
SERVICE MANUAL Room Air Conditioner Multi Split type Outdoor unit /R410A DC Inverter/ FS2MI-147HFD FS2MI-187HFD FS3MI-217HFD FS3MI-277HFD FS4MI-277HFD FS4MI-367HFD FS5MI-367HFD NOTE: Before servicing the
For Europe Haier Air conditioner HAND in HAND HIGHER and HIGHER Page:1 For Europe HSU-09/12HVA103/R2(DB) HSU-09/12RHA103/R2(DB) Page:2 Error Codes and Description indoor and outdoor display(1) indoor Code
MULTI SPLIT TYPE, HEAT PUMP AIR CONDITIONERS Technical service manual 2009 KSIM MULTI ZONE SERIES R410A DC Inverter multi Series Models KSIM20912-H216 KSIM30912-H216 KSIM40912-H216 CONTENT 1. Product features
Simple Self-Diagnosis by Code After Sales Service Division (SM-TS2) Detail Division 0 Indoor Unit System Others A C E F H J L P U M 7 8 9 External device activated (unified) Protection devices activated
SERVICE MANUAL SPLIT SYSTEM ROOM AIR CONDITIONER INDOOR UNIT AH-129 AH-MP14 OUTDOOR UNIT AU-129 AU-MP14 CONTENTS SPECIFICATIONS...2 EXTERNAL DIMENSIONS...4 WIRING DIAGRAMS...5 ELECTRICAL PARTS...6 MICROCOMPUTER
LG LG Checkpoint-s Versie 2.4P-M vervangt U02.3.M BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THE SERVICEMANUAL. ONLY FOR AUTHORIZED SERVICE PERSONNEL. 1 Hoofdstukindeling Single A (vloer-
AIRREX AIR CONDITIONER USER S MANUAL HSC-24A Thank you for purchasing an AIRREX AIR CONDITIONER. BEFORE operation please read this user s manual carefully. Keep this manual readily available. It is ESSENTIAL
2. OUTDOOR UNIT OPERATION CONTROL 2. OUTDOOR UNIT 2-1 INPUT / OUTPUT LIST I N P U T O UT P U T Input / output or kind of detail Control range Discharge pressure sensor Pressure sensor Measure range 0.0
Table V Troubleshooting Checklist for Refrigeration Systems TROUBLE POSSIBLE CAUSE CORRECTIVE MEASURE High condensing pressure. Low condensing pressure. Air or non-condensable gas in system. Inlet water
A/C-HEATER SYSTEM - AUTOMATIC 1995 Volvo 850 1995-96 Auto. A/C-Heater Systems Volvo 850 * PLEASE READ THIS FIRST * WARNING: To avoid injury from accidental air bag deployment, read and carefully follow
A/C Performance Diagnosis Problem Warm Airflow When the Air Conditioner is On, A/C Not Working, or Poor A/C Performance (dash outlet temperature is too high) Problem Warm Airflow When the Air Conditioner
GD Midea Refrigeration Equipment Co.,Ltd ODMI-A-1202 MULTI SPLIT TYPE, HEAT PUMP AIR CONDITIONERS Technical service manual R410A Multi DC inverter 220~240V-1Ph-50Hz Outdoor units Models M2OC-14HRDN1 M2OC-14HRDN1-Q
Evolution Controls Inc. Warning: These tests are to be performed by qualified personnel who are familiar with the machinery where the EVO/ECM series control and connected motor is installed. All mechanical,
USER S MANUAL MaxPower 400-600 UPS Uninterruptible Power System 28-2MAXPO0018 IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important instructions for models MaxPower 400 and
Repair Guideline for TCL DC Inverter Air Conditioner FLOS SERIE---V3 0 CONTENTS Ⅰ. Introduction of New control board for outdoor unit...2 1. The structure of control board... 2 2. Diagram of outdoor unit........4
BRAVER UPS (Uninterruptible Power System) User s Manual Safety CAUTION! This UPS utilizes voltages that may be hazardous. Do not attempt to disassemble the unit. The unit contains no user replaceable parts.
SERVICE MANUAL 12VDC WALL THERMOSTAT AIR CONDITIONING SYSTEMS ROOFTOP UNITS ONLY! WARNING - SHOCK HAZARD! TO PREVENT THE POSSIBILITY OF SEVERE PERSONAL INJURY, DEATH, OR EQUIPMENT DAMAGE DUE TO ELECTRICAL
INSTALLATION & SERVICE MANUAL Display Panel The PowerLine EMS TM is a specialized power distribution and energy management system intended to be used in recreational vehicles. The Control Module is housed
FILE. SVM-070. HOW TO DIAGSE THE TROUBLE The pulse motor circuits are mounted to both indoor and outdoor units. Therefore, diagnose troubles according to the trouble diagnosis procedure as described below.
SPLIT-TYPE AIR CONDITIONERS Revision B: Descriptions regarding the outdoor fan motor have been corrected. Please void OBH549 REVISED EDITION-A. OUTDOOR UNIT SERVICE MANUAL HFC utilized R410A. OBH549 REVISED
SERVICE MANUAL FOR 6535 SERIES TWO TON HIGH EFFICIENCY PACKAGED HEAT PUMPS TABLE OF CONTENTS 1. Warnings...2 2. Accessibility Of Appliance...3 3. Unit Dimensions And Specifications...3 4. Unit Specifications
NX Series Inverters HVAC Pocket Programming Guide HVAC Pocket Programming Guide HVAC Pocket Programming Guide / Contents This guide provides a single reference document for the user of NXL HVAC (product
A.Y. McDonald Mfg. Co. Troubleshooting Submersible and Jet Pumps Troubleshooting Submersible Pumps Fuse overload or circuit breaker trips when motor is started 1. Incorrect line voltage. Check the line
Automatic Temperature Control Diagnosis and Repair Diagnosis of Automatic A/C Systems The most common automatic A/C system malfunctions tend to be the result of basic air conditioning problems. These problems
..OR How To Protect your 3-Phase Equipment Investment with 3-Phase Monitors from Time Mark... TIME MARK CORPORATION 11440 EAST PINE STREET TULSA, OK 74116 USA tel 918 438-1220 fax 918 437-7584 www.time-mark.com
EPSOLAR LS1024B / LS2024B/ LS3024B Solar Charge Controller USER MANUAL Thank you very much for selecting our product! This manual offers important information and suggestions with respect to installation,
6. A: A/C OR SELF-DIAGNOSIS SYSTEMS DO NOT OPERATE TROUBLE SYMPTOM: Set temperature is not indicated on the display, switch LEDs are faulty or switches do not operate. Self-diagnosis system does not operate.
Mechanism Diagram 15-1-1 GENERAL During assembly/installation, use the torque values and service products as in this section. WARNING! Torque wrench tightening specifications must be strictly adhered to.
TopPage AEX2M14LR SERVICE MANUAL. S2038AEX2MLRT MULITI SPLIT TYPE ROOM AIR CONDITIONERS (OUTDOOR UNIT) MODEL AE-X2M14LR In the interests of user-safety (Required by safety regulations in some countries)
Repair Guideline for SANYO New Erp DC Inverter Air Conditioner (Published in May, 2013) Contents I. Electronic Control of DC Inverter Air Conditioner 2 1. Main parts of the electronic control of DC inverter
Spray Controller Troubleshooting 1 Controller does not turn on. a) Fuse on loom has blown. b) Internal poly fuses have blown. Disconnect controller from power and wait. After poly fuses reset connect power
Panasonic/Sanyo A/C Interface Modbus RTU Installation Instructions Preface Safety warnings To avoid injury, or damage to the Modbus interface, read all installation and configuration instructions in this
Brushless DC Motor Controller Product Specification Assembly 025F0129 September 16, 2009 025F0129 ST B Brushless DC Motor Controller Data Sheet Page 1 Revision History ECN # Date Rev Description By 07058
ANTI-THEFT SYSTEM 1995 Volvo 850 1995-96 ACCESSORIES & EQUIPMENT Volvo Anti-Theft Systems 850 DESCRIPTION & OPERATION WARNING: Deactivate air bag system before performing any service operation. For 1995
Fire Alarm Control Panel Family Operating Manual CONTENTS System Description AH-03312 System Characteristics... Fire Signal Receiving Board Description-4L... Fire Signal Receiving Board Description-8L...
SPLIT-TYPE AIR CONDITIONERS Revision B: "How to check miswiring and serial signal error" for MUZ type has been added. The description about "Low standby power control" has been added to "TECHNICAL CHANGES".
DESCRIPTION MODEL 5010 DUAL CHANNEL SMOKE/FIRE DETECTION MODULE DESCRIPTION The SST Model 5010 Two Channel Smoke/Fire Detection Module provides two independent detection input channels for the NOVA-5000
SERVICE MANUAL AIRCONDITIONER DC INVERTER MULTI TYPE TAS-18MVHN/O TAS-27MVHN/O TAS-36MVHN/O DC MULTI OUTDOOR UNITS CONTENTS 1. General information of Outdoor Units... 3 2. Dimensions... 4 3. Wiring Diagram...
FAULT COVER&TABS_COVERS 26/09/2011 17:14 Page 1 Fault Code Check List This Fault Code Check List is intended to provide an easy-to-use, quick reference guide on all Fault Codes across our product range.
6. 6.1 and info (Menu 4) NB are shown in the event of unit faults or irregular operation Check the Current list (Menu 4) for alarm messages and refer to the list of alarms given at the end of these instructions.
AIR CONDITIONI AIR CONDITIONI SYSTEM (for Manual Air Conditioning System) 145 DTC B1423/23 Pressure Sensor Circuit DESCRIPTION This DTC is output when the refrigerant pressure is either extremely low (0.19
MODE ALARM Portable Air Conditioner OWNER S MANUAL Read these instructions before use 8 Model: MF08CESWW Voltage rating: 115V~60Hz Power rating : 800W Customer Support : 1-800-474-2147 For product inquiries
Air Conditioner Water Heater - A Product of HotSpot Energy LLC PLEASE READ THIS BEFORE YOU INSTALL THE UNIT 1. This air conditioner must be installed and/or repaired by a qualified technician. If you perform
Thermo Top - Troubleshooting Tree 07-15-2002 CAUTION Troubleshooting requires comprehensive knowledge about the structure and theory of operation of the Thermo Top heater. Troubleshooting and repairs may
W Ith I ntelligent Control S Ave E lectricity INTELLIGENT HOT WATER CYLINDER CONTROL INSTRUCTION MANUAL Thank you for purchasing our controller Before operating and installation carefully read all instructions.
INSTALLATION GUIDE Card Reader & Controller with KIM Swipe Reader for Solitaire 850 / 950 / 850L Learnlok PK2930 Card Reader and Controller Model 3.5 with KIM Swipe Reader Table of Contents 1. Features..................................
INSTALLATION MANUAL 88 44 µchiller compact 70 64 4a 4b G G0 power supply G G0 power supply 50 5 50 5 4a 4b 5a 5b 4 5a 5b Installation manual READ THIS MANUAL ATTENTIVELY BEFORE STARTING UP THE UNIT. DO
CAT AVR V2.3 Voltage regulator for generators March 2008 Instruction Manual Warnings WARNING The system should not be installed, operated, serviced or modified except by qualified personnel who understand
Oil and Coolant Circulating Heating System Model - OCSM Installation & Operation Manual 216280-000 REV 2 Identifying Your System The HOTSTART heating system is designed to heat fluids for use in marine
Rev. D PRODUCTIVITY THROUGH INNOVATION 600 CONTROL DIRECT DRIVE TECHNICAL/OPERATION MANUAL 10 BORIGHT AVENUE, KENILWORTH NEW JERSEY 07033 TELEPHONE: 800-524-0273 FAX: 908-686-9317 TABLE OF CONTENTS Page
THERMO KING TRUCK & TRAILER UNIT ALARM CODES THIS DOCUMENT SHOWS ALL CURRENT ALARM CODES FOR THERMO KING TRUCK AND TRAILER UNITS. NOT ALL CODES ARE POSSIBLE ON ANY INDIVIDUAL UNIT. IF THE ALARM APPLIES
AC Electrical System Tests Hot Skin Test Prepare Documentation? Make sure shore line is plugged into 120VAC source? Set VOM to AC voltage scale? Place one probe on a bare metal surface of the RV (i.e.,
Table of Contents The Basics of Electricity 2 Using a Digital Multimeter 4 IDEAL Digital Multimeters An Introduction The Basics of Digital Multimeters is designed to give you a fundamental knowledge of
EVANS ELECTRONIC TEMPERATURE CONTROL TROUBLESHOOTING GUIDE for systems equipped with electric coolant valve and external PC board. This Troubleshooting Guide covers the electric coolant valve and control
Portable Air Conditioner Owner's Manual Model:3 in 1 12,000 Btu/h Series 3 Please read this owner s manual carefully before operation and retain it for future reference. CONTENTS 1. SUMMARY...1 2. PORTABLE
Portable Air Conditioner OWNER S MANUAL Read these instructions before use Model: MM14CHCSCS Voltage rating: 120V~60Hz Power rating : 1400W(Cooling) Power rating : 1350W(Heating) Customer Support : 1-800-474-21477
LG Air conditioning Company Multi V Water Ⅱ Air Conditioning Academy 1.1 What is Multi V Water II? High Performance Prospect rights Water pipe Refrigerant pipe Indoor unit Beautiful Exterior Convenience
54B-1 GROUP 54B LOCAL INTERCONNECT NETWORK (LIN) CONTENTS GENERAL INFORMATION 54B-2 SPECIAL TOOLS 54B-3 54B-4 DIAGNOSIS FUNCTION 54B-4 DIAGNOSTIC TROUBLE CODE CHART 54B-6 DIAGNOSTIC TROUBLE CODE PROCEDURES
A/C-HEATER SYSTEM - MANUAL 1995 Toyota 4Runner 1995-96 Manual A/C-Heater System 4Runner * PLEASE READ THIS FIRST * WARNING: To avoid injury from accidental air bag deployment, read and carefully follow
ELECTRIC CENTRAL HEATING FLOW BOILER EKCO.T Used product can t be treated as general communal waste. Disassembled appliance has to be delivered to the collection point of electrical and electronic equipment