Daikin RTSQ20PY1 Service Manual page 4

Part 6 Troubleshooting ............................................................. 194
1. Check Items for Service ......................................................................197
2. Symptom-based Troubleshooting .......................................................199
3. Troubleshooting by Remote Controller ...............................................202
4. Troubleshooting by Indication on the Remote Controller ....................220
iii
1.1 For Troubleshooting .............................................................................197
1.2 Precautions for Service ........................................................................197
3.1 The INSPECTION / TEST Button.........................................................202
3.2 Self-diagnosis by Wired Remote Controller .........................................203
3.3 Self-diagnosis by Wireless Remote Controller .....................................204
3.4 Remote Controller Service Mode .........................................................207
3.5 Inspection Mode ...................................................................................210
3.6 Test Run Mode.....................................................................................211
3.7 Remote Controller Self-Diagnosis Function .........................................211
3.8 List of Malfunction Code.......................................................................213
4.1 "A0" Indoor Unit: Error of External Protection Device............................220
4.2 "A1" Indoor Unit: PCB Defect ................................................................221
4.3 "A3" Indoor Unit: Malfunction of Drain Level Control System (S1L) ......222
4.4 "A6" Indoor Unit: Fan Motor (M1F) Lock, Overload...............................224
"A6" Indoor Unit: Malfunction of Indoor Unit Fan Motor.........................226
4.5 "A7" Indoor Unit: Malfunction of Swing Flap Motor (M1S).....................230
4.6 "A9" Electronic Expansion Valve Malfunction / Dust Clogging ..............232
"A9" Indoor Unit: Malfunction of Electronic Expansion Valve Coil.........234
4.7 "AF" Indoor Unit: Drain Level above Limit .............................................236
4.8 "AJ" Indoor Unit: Malfunction of Capacity Determination Device ..........237
4.9 "C4" Indoor Unit: Malfunction of Thermistor (R2T) for
Heat Exchanger....................................................................................238
4.10 "C5" Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes .........239
4.11 "C9" Indoor Unit: Malfunction of Thermistor (R1T) for Suction Air.........240
4.12 "CA" Indoor Unit: Malfunction of Thermistor (R4T) for
Discharge Air........................................................................................241
4.13 "CJ" Indoor Unit: Malfunction of Room Temperature
Thermistor in Remote Controller ..........................................................242
4.14 "E1" Outdoor Unit: PCB Defect .............................................................243
4.15 "E3" Outdoor Unit: Actuation of High Pressure Switch..........................244
4.16 "E4" Outdoor Unit: Actuation of Low Pressure Sensor..........................246
4.17 "E5" Outdoor Unit: Inverter Compressor Motor Lock.............................248
4.18 "E6" Outdoor Unit: STD Compressor Motor Overcurrent/Lock..............250
4.19 "E7" Outdoor Unit: Malfunction of Outdoor Unit Fan Motor ...................251
4.20 "E9" Outdoor Unit: Malfunction of
Electronic Expansion Valve Coil (Y1E~Y5E)........................................254
4.21 "F3" Outdoor Unit: Abnormal Discharge Pipe Temperature..................256
4.22 "F6" Outdoor Unit: Refrigerant Overcharged.........................................258
4.23 "H7" Outdoor Unit: Abnormal Outdoor Fan Motor Signal ......................259
4.24 "H9" Outdoor Unit: Malfunction of Thermistor (R1T) for
Outdoor Air ...........................................................................................261
4.25 "J2" Outdoor Unit: Current Sensor Malfunction ....................................262
4.26 "J3" Outdoor Unit: Malfunction of Discharge Pipe Thermistor
(R31T, R32T, R33T).............................................................................263
4.27 "J4" Outdoor Unit: Malfunction of Temperature Sensor for
Heat Exchanger Gas (R2T)..................................................................264
SiBE31-801_C
Table of Contents