Troubleshooting Manual
Contents
1. TS13 01 Troubleshooting manual 31 E6 Description Compressor lock Supposed Cause The system will be shut down if the error occurs 16 times Compressor locked Compressor harness disconnect Troubleshooting Turn off the power Disconnect the harness U V and W Check with the inverter checker Correct the power supply Turn off the power and reconnect the harness Turn on the power again and get the system restarted Emergency stop without compressor running Replace the compressor System shut doWa Check the EXV and after errors repeated replaced if required several times Replace the compressor TS13 01 Troubleshooting manual 32 E7 Description DC Fan Lock Supposed Cause Fan motor breakdown Harness or connector disconnected between fan motor and PCB or in poor contact Troubleshooting Yes Fan motor connector disconnected Turn off the power and reconnect the connector Foreign matters in or around the fan Yes Checkthe outdoor unit PCB rpm pulse input Replace the outdoor unit Pulse signal inputted fan motor Replacethe outdoor unit PCB TS13 01 Troubleshooting manual 33 E8 Description Input Over Current Detection Supposed Cause over current due to compressor failure over current due to defective outdoor unit PCB over current2. Yes Change signal line wire TS13 01 Troubleshooting manual 48 UA Description Communication error outdoor PCB amp IPM PCB Supposed Cause Wrong models interconnected Wrong indoor unit PCB mounted Indoor unit PCB defective Wrong outdoor unit PCB mounted or defective Troubleshooting Check the models number Check the combination of the models TS13 01 Troubleshooting manual 49 4 0 Wiring Connection FTXN 25 35 LV1B RXN 25 35 LV1B 50 TS13 01 Troubleshooting manual FTXN 50 60 LV1B RXN50 60 LV1B TS13 01 Troubleshooting manual N 721771 EN FR zc Jzzzzrzzz2ta AA HO Refrigerant Diagram FTXN 25 35 LV1B RXN 25 35 LV1B COOLING OPERATION HEATING OPERATION OUTDOOR UNIT FTXN 50 60 LV1B RXN50 60 LV1B COOLING OPERATION HEATING OPERATION z s 5 e 52 TS13 01 Troubleshooting manual Appendix Resistance value when 25 C Indoor WM 10K 10K CC CK CM DK C Outdoor 10K 20K Table 1 Resistance R25 10K ohm rc Rmin kO Rnom k Rmax kt rc Rmin kQ Rnom kt Rmax kt 1 1 1 1 q q 1 1 1 1 1 1 1 1 1 T 9 90E 00 9 52E 00 9 16E 00 8 82E 00 8 49 00 8 17E 00 7 87E 00 7 58E 00 7 31E 00 7 04E 00 6 79E 00 6 54E 00 6 31E 00 6 09E 00 5 87E 00 5 67E 00 4 53E 01 4 32E 01
3. f 1 f i E j 4 X OM V A 1 t AE E W y ar arco 2 MALAM NS DPK PH VA V STRANGE sleper INDOOR UNIT OUTDOOR UNIT FUNCTIONS OF THERMISTOR Used for discharge superheat SH amp EXV control Also used for crankcase heater preheating control in Series 2 model Used for defrost control Also used for inverter current protection control in eries Used for defrost amp outdoor fan speed control Also used for PMV overall current protection amp preheating operation control Jsed for capturing heat sink temperature Used for EXV SH amp suction pipe SH protection control in heating U sed for gas pipe isothermal control in cooling EXV opening is controlled so that accurate cooling capacity is achieved in each room Used for sub cooling control in heating Actual sub cooling will be calculated with liquid pipe amp max heat exchanger temperature among all rooms EXV opening is then adjusted to reach the target sub cooling TS13 01 Troubleshooting manual MINIMUM RUN CONTROL To prevent frequent compressor ON OFF amp to allow pressure equalization The compressor will be on 3 minutes stand by after turning OFF before it is allowed to turn ON OD fan OFF delay to improve pressure equalization amp to prevent refrigerant from entering into evaporator AUTO RESTART Factory pre set Allow unit to automatically resume t
4. 2 05E 00 99E 00 93E 00 88E 00 82E 00 77E 00 72E 00 67E 00 62E 00 58E 00 53E 00 49E 00 45E 00 41E 00 37E 00 33E 00 30E 00 26E 00 1 23E 00 hh Q Q Q Q Q Q 27E 00 Table 2 Resistance R25 20K ohm Temperature C Resistance value kQ 211 0 m J TS13 01 Troubleshooting manual 54
5. normal change thermistor Yes Check refrigerant level EXV stop valve and condenser ambient temperature Refer to the j type of yes abnormality abnormal and conduct proper service No change outdoor PCB TS13 01 Troubleshooting manual 38 HO Description Compressor sensor system error Supposed Cause Reactor disconnection Compressor disconnection Outdoor unit PCB defective Compressor defective Troubleshooting Check reactor connection Any abnormal Conned back reactor No Check reactor resistance Check reactor resistance disconnectthe reactor wire and measure resistance between terminal Changereactor Yes Check compressor resistance Change compressor Yes Change outdoor PCB TS13 01 Troubleshooting manual 39 H6 Description Compressor feedback detection error Supposed Cause Compressor relay cable disconnected Compressor itself defective Outdoor PCB defective Stop valve closed Input voltage out of specification Troubleshooting Check for short circuit Replace the outdoor unit PCB outdoor unit fan Compressor harness connected as specified Reconnect as specified Turn off the power Disconnect the harness U V and W Check with inverter checker TS13 01 Troubleshooting manual 40 H8 Description AC current sensor error S
6. 4 12E 01 3 92E 01 3 74E 01 3 57E 01 3 41E 01 3 26E 01 3 11E 01 2 97E 01 2 84E 01 2 71E 01 2 59E 01 2 48E 01 2 37E 01 2 27E 01 2 18E 01 2 08E 01 2 00E 01 1 91 01 1 83E 01 76E 01 69E 01 62E 01 55E 01 49E 01 43E 01 37E 01 32E 01 27 01 22 01 17E 01 12E 01 08 01 04E 01 1 00E 01 9 62E 00 9 26E 00 8 92E 00 8 59E 00 8 27E 00 7 97E 00 7 68E 00 7 40E 00 7 14E 00 6 88E 00 6 64E 00 6 40E 00 6 18E 00 5 96E 00 5 75E 00 at eo ot ot ot ot 7513 01 Troubleshooting manual 9 02E 00 8 69E 00 8 37E 00 8 07E 00 7 78E 00 7 50E 00 7 23E 00 6 98E 00 6 73E 00 6 50E 00 5 84E 00 5 47E 00 5 28E 00 5 10E 00 4 92E 00 4 75E 00 4 59E 00 4 44E 00 4 29E 00 4 15E 00 4 01E 00 3 88E 00 3 75E 00 3 63E 00 3 51E 00 3 40E 00 3 29E 00 3 18E 00 3 08E 00 2 98E 00 2 89E 00 2 80E 00 2 71E 00 2 63E 00 2 55E 00 2 47E 00 2 40E 00 2 32E 00 2 25E 00 2 19E 00 2 12E 00 2 06E 00 2 00E 00 1 94E 00 1 88E 00 1 83E 00 1 77E 00 1 72E 00 1 67E 00 1 63E 00 1 58E 00 1 53E 00 1 49E 00 1 45 00 1 41E 00 1 37E 00 1 33E 00 1 30E 00 1 26E 00 1 23E 00 1 19E 00 5 56E 00 5 37E 00 5 18E 00 5 01E 00 4 84E 00 4 67E 00 4 52E 00 4 37E 00 4 22E 00 4 09E 00 3 95E 00 3 82E 00 3 70E 00 3 58E 00 3 47E 00 3 36E 00 3 25E 00 3 15E 00 3 05E 00 2 96E 00 2 86E 00 2 78E 00 2 69E 00 2 61E 00 2 53E 00 2 45E 00 2 38E 00 2 31E 00 2 24E 00 2 17E 00 2 11E 00
7. 5 Description IPM error IGBT error Supposed Cause Over current due to defective power transistor Over current due to wrong internal wiring Over current due to abnormal supply voltage Over current due to defective PCB Error detection due to defective PCB Over current due to closed stop valve Over current due to compressor failure Over current due to poor installation condition Connection between main board and IPM board is not properly connect Troubleshooting Stop valvefully open Open stop valve Yes Turn offthe unit and turn on back after 20 mins Continue monitor for supply voltage discharge suction pressure compressor overload Check for silicon grease at IPM condition Turn off the unit and disconnect compressor U VW wire Check compressor windingresistance Resistance nomal Yes Changethe Outdoor PCB Changecompressor UO Description Insufficient gas Supposed Cause Refrigerant shortage Refrigerant leakage Stop valve closed EXV defective Discharge pipe thermistor defect Indoor and outdoor unit coil thermistor not in actual location or defect TS13 01 Troubleshooting manual 45 Troubleshooting Check stop valve Yes Check indoor and outdoor coil thermistor thermistor in actual position Check indoor coil outdoor coil and discharge pipe thermistor resis
8. RXN60LV1B 12 0A When the input current for running compressor exceeds L2 running frequency will be reduced by 1 step If current still exceeds L2 frequency will be reduced by another 1 step until total current falls between L2 and L3 This protection cut in when the input current exceeds L1 for 2 seconds RXN LV Compressor will stop and it is considered total current overload If input current L3 the compressor frequency is reset based on the OD ambient set and room temperature OIL RECOVERY CONTROL When the compressor operates for certain duration at low frequency the oil level in the compressor may become low due to incomplete oil return To prevent damage to the compressor or compressor lock due to low oil lever promote refrigerant flow to carry the oil back to the compressor TS13 01 Troubleshooting manual 14 Entering condition Compressor rotation 35 Hz at the end of a 20 minutes timer set lower limit rotation to 35 Hz amp EXV opening is fixed at current opening 50 pulse This control is reset when rotation gt 35 Hz OR Compressor rotation gt 35 Hz for every 120 minutes current rotation is remained amp is fixed at current opening 50 pulse This control is reset after 5 minutes 3 0 Service Diagnosis From indoor units When any error occurs indoor LED display will keep blinking green light The blinking pattern not indicate error details The er
9. TS13 01 Troubleshooting Manual Inverter Split Wall mounted Type L Series Heat pump Indoor unit FTXN LV Outdoor unit RXN LV 1 0 Introduction Inverter Air conditioning technology is today s solution for superior comfort higher efficiency and better energy saving Daikin Inverter included Residential Light Commercial and Multi Split Unit INVERTER Y SINGLE SPLIT Residential Light Commercial 1 INDOORS il OUTDOORS 1 1 INVERTER Y SINGLE SPLIT Residential FTXN LV amp RXN LV High Quality amp Efficiency Daikin DC Inverter compressor High Performance Daikin Inverter Controller S speed Step less Fan operation BioPro IAQ New Inverter only Remote Control Piping Length amp Elevation Max total Max height Pre charge for Additional Model piping length difference up to piping charge m m length m g m RX Terminal Block for outdoor Equipped with 7 segment display to improve serviceability Exclude for RXN25 30LV 1B To retrieve error code amp running parameters TS13 01 Troubleshooting manual 2 Disable Auto Random Restart function Series I To disable the auto random restart function kindly cut off the jumper J AUTO as highlighted in attachment Please be informed that after disable auto random restart unit is not able to restart with last state memory after power resume from failure Unit will revert to default
10. and OD fan stop after 30s unit can only be restarted after 3 minutes DISCHARGE PIPE TEMPERATURE CONTROL Used as a measure of the compressor s internal temperature Compressor frequency is control to keep this temperature from going up further when it rises above a certain level Discharge temperature Stop zone 110 C 120 C 102 C 111 C Drop zone 99 C 109 C Frequency keep zone 90 C 107 C Reset zone If compressor discharge temperature gt 102 C 111 C for the first time this control starts and set the current frequency as upper limit At the same time running frequency start to reduce by 1 step and so on until temperature falls between 99 C 109 C and 90 C 107 C at the maintain zone This protection is activated when the compressor discharge temperature gt 110 C 120 C The compressor will stop and considered trip the compressor discharge temperature lt 90 C 107 C the compressor frequency will be reset based on the OD ambient set and room temperature TS13 01 Troubleshooting manual 13 OVERALL CURRENT CONTROL monitor the overall current and to restrict the compressor upper limit rotation in order to prevent circuit breakers from exceeding the rated capacity Detected during compressor running Current A Stop zone L1 Frequency reduce zone L2 Frequency remain zone L3 Reset zone RXN5OLV1B 12 0A
11. arness about 3kQ Replace the 4 way valve coil Check the 4 way valve Replace outdoor switching output unit PCB Functioning Any thermsistor disconnected Yes Replace the defective thermsistor Thermistor functioning Yes Refrigerant line blockage or shortage Correct the problem Replace the 4 way valve TS13 01 Troubleshooting manual 36 F3 Description Discharge pipe overheat Supposed Cause Refrigerant shortage Four way valve malfunctioning Discharge pipe thermistor defective Outdoor PCB defective Water mixed in the local piping EXV defective Stop Valve defective Troubleshooting Resistance value Changedischargethermistor Yes Check refrigerant level compressor EXV amp stop valve F6 Description Heat exchanger overheat Supposed Cause The installation space is not large enough Faulty outdoor unit fan Faulty EXV Faulty defrost thermistor Faulty stop valve Dirty heat exchanger Unit overcharge Working out of operating limit TS13 01 Troubleshooting manual 37 Troubleshooting check outdoor installation condition change any outdoor abnormal Yes location clean outdoor coil No check outdoor fan motor fan motor running smoothly change fan motor Refer thermistor resistance table Resistance
12. ate memory Press SLEEP amp TIMER ACTIVE simultaneously for 5 seconds and the error will be flashed Co J J 4 DELAY TIMER TIMER 2 TS13 01 Troubleshooting manual 17 Error code description for Y series Inverter No ERROR CODE ERROR DESCRIPTION RXN50 60 LV1B RXN25 35LV1B INDOOR HEAT EXCHANGER THERMISTOR SHORT OPEN INDOOR ROOM THERMISTOR SHORT OPEN TS13 01 Troubleshooting manual 18 OUTDOOR PCB ERROR E COMPRESSOR OVERLOAD COMPRESSOR LOCK START UP ERROR OUTDOOR FAN MOTOR LOCK AC INPUT OVER CURRENT 4 WAY VALVE ERROR DISCHARGE PIPE OVERHEAT COMPRESSOR SENSOR SYSTEM ABNORMAL POSITION SENSOR ABNORMAL compressor y 4 OUTDOOR AIR THERMISTOR SHORT OPEN Y V COMPRESSOR DISCHARGE PIPE THERMISTOR SHORT OPEN MISPLACED OUTDOOR HEAT EXCHANGER 22 J6 THERMISTOR SHORT OPEN ELECTRICAL BOX TEMPERATURE RISE 23 L3 compressor off HEAT SINK OVERHEAT compressor 24 LA on IPM ERROR IGBT ERROR output 25 L5 over current HEAT SINK THERMISTOR SHORT 26 P4 INSUFFICIENT GAS TS13 01 Troubleshooting manual Error Code Al Description Indoor unit PCB abnormality Supposed Cause 1 Faulty indoor PCB 2 Faulty connector connection at indoor Turn off unit Troubleshooting Check indoor PCB connedor conditions including PCB to terminal block and all PCB wire connector Any sign of loose or abnormal Connect correctly and
13. dition 1 AT ATi a Troom E Trei Use to set target for compressor frequency change Compressor frequency is increased or decreased LIMIT ROTATION Determine from e Upper limit rotation TS13 01 Troubleshooting manual 11 minimum value was determined among the upper limits rotation i e protection controls Lower limit rotation maximum value was determined among the lower limits rotation i e protection controls Generally compressor rotation is controlled within 4 zones stop drop keep up and reset subjected to a particular operating temperature current pressure zoe omr Sto Compressor is stopped when a certain limit reaches the stop zone for abnormality p correction Frequency will be dropped with a timer setting Frequency is maintained at lower upper limit Frequency will be increased with a timer setting Frequency lower upper limit is canceled and returned to command rotation HIGH PRESSURE PROTECTION To prevent high pressure in the system Compressor operating frequency is adjusted based on upper limit of coil temperature RXN LV Upper Limit Coil Temperature Compressorfrequency TS13 01 Troubleshooting manual 12 The compressor frequency is adjusted based on coil temperature During cooling mode outdoor coil temperature During heating mode indoor coil temperature This protection is activated when the coil temperature gt 64 C the compressor stop
14. due to defective power transistor over current due to short circuit Troubleshooting Measure the input current Input current flowing above its stop level Replace the outdoor unit Check outdoor fan motor outdoor ambient temperature refrigerant charge level Refer to the type of abnormality and conduct proper service Any abnormal Turn off the power and disconnect the harness U V and W Check with the inverter checker Yes Change Compressor Compressor faulty Change outdoor Control Box TS13 01 Troubleshooting manual 34 E9 Description EXV error Supposed Cause EXV faulty EXV connected wrongly Troubleshooting Is the EXV connector Reconnect Reconnect connects correctly Turnthe power off and back on again Any latching Outdoor unit PCB is faulty sound EXV unit is faulty EA Description 4 way valve error Supposed Cause Thermistor defective Connector in poor contact 4 way valve defective Outdoor PCB defective Insufficient gas Foreign substance mixed in refrigerant TS13 01 Troubleshooting manual 35 Troubleshooting Yes 4 way valve coil or harness disconnected loose Reconnect Check the continuity of the 4 way valve coil and harness Disconnect the harness from the connector Resistance between h
15. e 1 faulty high pressure switch connector or wire harness 2 Indoor filter outdoor coil dirty 3 Outdoor fan not running unit overcharge stop valve is closed Troubleshooting Openthe stop valve Conned correctly Referhowto check low pressure voltage Stop valve open Yes ow pressure switch connect to outdoor PCB Yes Measure the voltage between low pressure switch elation between Voltage and pressure followthe graph Changethe low pressure switch Changethe Outdoor PCB No Isthe refrigerant pressure abnormally low Yes Correctrefrigerant system gas shortage leakage or piping block Referhowto check low pressure condition TS13 01 Troubleshooting manual 30 E5 Description Compressor Overload detected through compressor OL Supposed Cause Refrigerant Shortage 4 way valve malfunction Outdoor unit PCB defective Water mixed in the local piping Electronic expansion valve defective Troubleshooting urn off unit Disconne Compressor wire hardness UVW Check compressor windingresistance Resistance nomal Refer compressor resistance table Change compressor Yes Conned back wire and turn on unit Compressor stop without running Changeoutdoor PCB Compressorrunfor sometimes heck EXV stop valve refrigerant level 4WV and waterinthe piping installation condition
16. est fan speed The unit can only be restarted after 3 minutes When the indoor coil temperature gt 13 C the compressor frequency will be reset based on the OD ambient room and set temperature TS13 01 Troubleshooting manual 9 ROTATION REGULATING FUNCTIONS Upper limit rotation Command Rotation Limit Rotation Target Rotation Starting Rotation Lower limit rotation AT Defrost Defrost control for heat pump model only STARTING ROTATION STARTING CONTROL To avoid excessive oil discharge from compressor or to promote oil lubrication during startup To prevent liquid flood back to the compressor limit starting current When compressor starts to rotate from OFF to ON compressor rotation is set to run gradually to each upper limit at a specific timer setting Compressor rotation f Max 4 5 pie gt gt Time min TS13 01 Troubleshooting manual 10 COMMAND ROTATION Cutin upon termination of Starting Control Achieve capacity control by controlling the compressor rotation based on Temperature difference between set and room temperature AT e Limit Rotation Defrost control Fuzzy Control Based on temperature difference AT current fan speed setting amp current indoor operating mode at every 30 seconds interval Temperature Difference Condition 2 dAT dAT AT ATi Con
17. he minimum stop time is gt 3 minutes and the user change back to cool mode Fan speed will maintain same as during fan mode AUTO MODE For heat pump only Mode switching point Heating gt Cooling gt Tr gt Ts 2 5 Cooling gt Heating gt Tr lt Ts 2 5 During initial operation Cooling operation Tr gt Ts Heating operation Tr Ts TS13 01 Troubleshooting manual 5 ID OD COMMUNICATION Master by outdoor unit Indoor controller board will transmit signal to outdoor controller board every 0 5s Outdoor unit will response to indoor once the valid data is received Indoor Actnowledgs Send Signal Outdoor If the data communication line between indoor and outdoor disrupted for 15s continuously compressor will stop OD fan stop with fan OFF timer ID LED blinks error the communication resumes within 15s error code is clear and compressor restarts after minutes the communication does not resume after 15s unit unable to restart and the error keep blinking TS13 01 Troubleshooting manual 6 THERMISTORS IN RXN LV JOLING OPERATION 2 e HEATING OPERATION 4 N PENG EL ml PRU 07 i VA V H I i i i 4 i 4 i i y I mim Ah j fh f f i d i j x ac 11 i Y i l 55 x 59 l iT i i 2 i J se 2 SS
18. he same operating mode it was in before a power failure 4 WAY VALVE CONTROL Change over switching is only carried out during operation OFF delayed is applied when the coil switches from ON to OFF i e ASLCY Series I 45 second ON Cool Dry OFF Defrost DEFROST CYCLE During defrost Compressor 4 way valve EXV in operation room Fixed opening EXV in operation stop room TS13 01 Troubleshooting manual 8 FTXN LV and RXN LV DEFROST CONTROL Condition for entering defrost Compressor minimum run time 6 minutes OR Compressor accumulated run time of 45 minutes if OD coil lt 3 C When OD coil lt 0 C AND OD coil lt OD air 10 C Condition for terminating defrost ODcoil gt 12 C or Total defrost timer of 650 seconds OUTDOOR FAN CONTROL Determine from Compressor target rotation higher fan speed with higher rotation Outdoor air temperature Cool mode Higher fan speed with higher outdoor air temperature Heat mode Higher fan speed with lower outdoor air temperature When compressor stops fan OFF delay 30 seconds is carried out INDOOR COIL FREEZE PREVENTION Only available in cooling mode When the indoor coil temperature 2 C the compressor starts to drop the frequency This protection will cut in when Indoor coil temperature lt 0 C for more than 180s Compressor will stop OD fan stop after 30s and indoor fan can only run at low
19. lean fan Yes blower check indoor coil thermistor resistance Refer to thermistor resistance table Does it conform to the thermistor accuracy table change indoor Yes PCB No change indoor thermistor TS13 01 Troubleshooting manual 23 TS13 01 Troubleshooting manual 24 A6 Description Fan Motor or Related Abnormality Supposed Cause 1 Indoor fan motor winding short or the motor lead wire broken 2 Indoor PCB faulty Troubleshooting Turn off power supply and rotate fan by hand Does it rotate Change fan motor Yes check fan motor connector condition Does it connect properly Connect it correctly Change PCB and turn on power supply Does it rotate No Change fan motor TS13 01 Troubleshooting manual 25 C4 Description Indoor Coil Thermistor short open Supposed Cause 1 Thermistor connector faulty 2 Indoor PCB faulty Troubleshooting Referthermistor resistance table No C9 Description Indoor Room Thermistor Short Open Supposed Cause 1 Thermistor connector faulty 2 Indoor PCB faulty Troubleshooting Checkthe thermistor connector condition Correctthe problem Refer thermistor resistance table Replace thermistor Airintake gap for room RTH201 temperature sensing Unit design with air
20. mistor defective Connector in poor contact Outdoor unit PCB defective Troubleshooting Turn off the unitandturn on back after 20 mins Referthermistor specandthe table Ye 5 Check heat sinkthermistor resistance Resistance normal Check outdoorfan Outdoorfan functioning Yes No Heat sink dirty Yes Cleanthe heat sink No Change outdoor fan motor Check installation Changethermistor condition Yes eat sink temperature gt 80 C Change heatsink or check outdoor fan conditio Change outdoor PCB TS13 01 Troubleshooting manual 43 L4 Description Heat sink overheat Supposed Cause Fin temperature rise due to short circuit Fin temperature rise due to defective outdoor unit fan Fin thermistor defective Connector in poor contact Outdoor unit PCB defective Silicon grease is not applied properly on the hat radiation fin after replacing outdoor unit PCB Troubleshooting Turn off the unit and turn on back after 20 minutes Refer thermistor resistance table Check heat sink thermistor resistance Check outdoor fan Change No outdoor fan Change motor thermistor 4 No Yes Yes Check No installation Change N condition outdoor lt 0 temperatu oor PCB us Yes Clean the heat sink TS13 01 Troubleshooting manual 44 L
21. opening at the front pane to allow sufficient space for air flow and measurement TS13 01 Troubleshooting manual 26 TS13 01 Troubleshooting manual 27 El Description Outdoor PCB error Supposed Cause 1 Micro Controller program run away due to external factor such as Noise Momentary voltage drop Momentary power failure 2 Damage of EEPROM 3 Faulty outdoor unit PCB Troubleshooting Investigate the cause of noise Avoid device near to high interference place Replace outdoor PCB Carry grounding work TS13 01 Troubleshooting manual 28 E3 Description High Pressure protection Supposed Cause 1 faulty high pressure switch connector or wire harness 2 Indoor filter outdoor coil dirty 3 Outdoor fan not running unit overcharge stop valve is closed Troubleshooting Checkthe installation condition Stop valve open Yes igh pressure switch conne to outdoor PCB Turn off unit Waitfor compressor stop 10 minutes ave continuity for high pressure switch Checkthe abnormal unit high pressure condition Have abnormal condition Replace outdoor PCB Openthe stop valve Conned correctly Replace high pressure switch Referhowto check high pressure condition Correctthe abnormal condition TS13 01 Troubleshooting manual 29 E4 Description Low Pressure protection Supposed Caus
22. operate again Replace indoor PCB and operate again Description Water Pump Error TS13 01 Troubleshooting manual 20 Supposed Cause 1 Faulty drain pump or float switch 2 Improper drain piping work or drain pipe blockage Troubleshooting Turn off unit Check drainpump connector connect to indoor PCB Any sign of loose or abnormal NO Restart back operation Drain pump works YES NO Drain water level abnormal high after sometimes Drainage system problem or blockage Conned correctly and operate again Change drain pump loatswitch connectto the PCB Connedfloat switch Check float switch have continuity Changefloat switch Changeindoor PCB TS13 01 Troubleshooting manual 21 5 Description Anti freeze protection or High Pressure Control Supposed Cause 1 Indoor air filter heat exchanger block due to dust accumulation 2 Indoor air short circuit 3 Indoor coil thermistor faulty 4 Indoor PCB faulty 5 Fan blower dirty Troubleshooting TS13 01 Troubleshooting manual 22 Check indoor air flow Any ar short circuit Provide Yes sufficient air passage No Check intake air filter Clean the air Yes filter check the dust accumulate indoor coil clean the Yes indoor coil check fan blower condition c
23. ror details have to retrieve from handset in error code form LED blinks here Indoor Wireless Handset BRC52A61 Using wireless handset BRC52A61 to retrieve error code TS13 01 Troubleshooting manual 15 O OFF TIMER CANCEL Hold down ON TIMER CANCEL or OFF TIMER CANCEL for 5 seconds until 029 indication flashes on the handset temperature display section Then press the same button repeatedly A series of error code will appear until ID buzzer produces a long beep The corresponding error code is indicated on the handset temperature display section 3 UN GR ID unit buzzer will produce a long beep if the handset error code matched with unit error A short and two consecutive beeps is Not the unit error The code display will cancel itself if the button is not pressed for 1 minute How to Retrieved Last State Error 1 2 3 4 5 6 7 Remove battery from remote controller Replace battery again into remote controller Press Mode amp ON OFF buttons together The 00 will show at temperature section Press Mode button to 5 00 Press Power On Unit LED blink two times ON hold fan button till screen become normal display TS13 01 Troubleshooting manual 16 8 Repeat the normal step to retrieve error by using remote controller step Holding TIMER CANCEL Using wired handset BRC51A61 error will show at the LCD display BRC51A6I can retrieved last st
24. setting as below Default setting Unit Off Temperature 24 C Fan speed High Mode Cooling TS13 01 Troubleshooting manual 2 0 Algorithm and Control INDOOR BASIC FUNCTIONS Residential and Light Commercial system has 5 operating modes The mode selection is done from indoor using handset The operating modes are Cool Heat Fan Auto Dry Cool Mode When Tr gt Ts 1 5 C Comp Indoor Fan and Outdoor Fan ON When Tr lt Ts 2 C Compressor and Outdoor Fan OFF Indoor Fan remains ON Tr Room Temperature Ts Set Temperature When cooling load is too small and the room temperature still falling below compressor cut off point compressor will stop Compressor Capacity Lowest Freq Time Tr lt Ts 2 C Comp will stop TS13 01 Troubleshooting manual Heat Mode When Ts gt Tr 1 09C Comp ID Fan and OD Fan ON When Tr gt Ts 1 5 C Compressor and Outdoor Fan OFF Indoor Fan off if indoor coil x 20 C Tr Room Temperature Ts Set Temperature When heating load is too small and the room temperature still rising above compressor cut off point compressor will stop Compressor Capacity Lowest Freq Time Tr Ts gt 1 5 C Comp will stop FAN MODE Only High Medium and Low fan speeds are allowed When changing cool mode to fan mode the compressor will stop and OD fan stops based on fan OFF control Compressor only ON if t
25. tance Resistance normal EXV functioning Check refrigerant charge level Refrigerant charge Sufficient Yes Change outdoor PCB Fully open stop valve Put the thermistor back to actual position Change thermistor Add in refrigerant charge Repair the leak point TS13 01 Troubleshooting manual 46 U2 Description DC voltage out of range Supposed Cause Supply voltage not as specified DC voltage detection circuit defective Troubleshooting Check the supply voltage Correct the power supply Supply voltage as specified Change outdoor PCB U4 Description Communication error between indoor and outdoor Supposed Cause Faulty outdoor unit PCB Faulty indoor unit PCB Indoor unit outdoor unit signal transmission error due to wiring error Indoor unit outdoor unit signal transmission error due to disturbed power supply waveform Indoor unit Outdoor unit signal transmission error due to breaking of wire in the connection wires between the indoor and outdoor units Troubleshooting TS13 01 Troubleshooting manual 47 Check indoor outdoor wiring connection Connect the Yes wiring correctly Check indoor unit PCB Indoor unit PCB can function Change indoor No unit PCB Yes Check outdoor unit PCB status LED Change outdoor PCB
26. upposed Cause Internal wiring broken Outdoor unit PCB defective Troubleshooting Check compressor harness connection Reconnect it correctly Restart the system and check connector between main board and IPM board Does it connect properly Reconnect it properly Yes Change outdoor PCB TS13 01 Troubleshooting manual H9 J3 J5 J6 J7 J8 J9 P4 Description Thermistor or related abnormality H9 Outdoor air thermistor short open J3 Compressor discharge pipe thermisotr short open J5 Suction pipe thermistor short open J6 Outdoor heat exchanger thermistor short open J7 Subcooling heat exchanger thermistor short open J8 Liquid pipe thermistor short open J9 Gas pipe thermistor short open P4 Heat sink thermistor short open Supposed Cause Connector in poor contact Thermistor defective Outdoor PCB defective Indoor PCB defective Troubleshooting Check connector forthe thennistor with error hermistor disconnected or loose Check thermistor resistance Resistance value normal Connedthermistor back Referthermistor specandthe table Changethermistor Yes Changeoutdoor PCB TS13 01 Troubleshooting manual 42 L3 Description Outdoor control box overheat Supposed Cause Fin temperature rise due to defective outdoor unit fan Fin temperature rise due to short circuit Hin ther
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