Table Of Contents - Daikin R71FUV1 Service Manual

Table of Contents

Table Of Contents2
List Of Applicable Models8
R-Fu Series8
R-Ga Series9
R-G Series9
R-Ku Series10
R-Lu Series11
Symptom-Based Troubleshooting36
2.1 Overview36
Applicable Model38
Supposed Causes38
2.2 Equipment Does Not Operate38
Troubleshooting39
Indoor Unit Fan Operates, But Compressor Does Not Operate40
Cooling / Heating Operation Starts But Stops Immediately43
After Unit Shuts Down, It Cannot Be Restarted For A While45
Equipment Operates But Does Not Provide Cooling48
Equipment Operates But Does Not Provide Heating51
Equipment Discharges White Mist54
Equipment Produces Loud Noise Or Vibration56
2.10 Equipment Discharges Dust59
Remote Controller Lcd Displays "8860
Troubleshooting By Remote Controller61
Procedure Of Self-Diagnosis By Remote Controller61
Wired Remote Controller62
Hecking An Error Or Warning62
Wireless Remote Controller63
Taking Corrective Action63
3.2 Error Codes And Description66
Outdoor Unit, System69
Inverter Series71
3.3 Detailed Error Codes80
A0 Error Of External Protection Device86
Method Of Error Detection86
Error Decision Conditions86
A1 Indoor Unit Pcb Abnormality88
A3 Drain Water Level System Abnormality90
A6 Indoor Unit Fan Motor Abnormality93
A6 Fan Motor (M1F) Lock, Overload103
A7 Swing Flap Motor Abnormality / Lock105
A8 Abnormal Power Supply Voltage107
A9 Electronic Expansion Valve Coil (Y1E) Abnormality109
Af Drain System Abnormality112
Af Drain Level Above Limit114
Aj Capacity Setting Abnormality115
Remote Controller Display117
C1 Transmission Error (Between Indoor Unit Pcb And Fan Pcb)122
C1 Transmission Error (Between Indoor Unit Pcb And Adaptor Pcb)125
C4, C5, C9 Thermistor Abnormality128
C6 Defective Combination (Between Indoor Unit Pcb And Fan Pcb)130
Cc Humidity Sensor System Abnormality132
Cj Remote Controller Thermistor Abnormality135
E0 Actuation Of Safety Device137
E0 Activation Of Outdoor Unit Protection Device145
E1 Outdoor Unit Pcb Abnormality147
E3 High Pressure System Abnormality150
E3 Abnormally High Pressure Level (Hps)155
E3 High Pressure Abnormality (Hps)157
E3 Actuation Of High Pressure Switch160
E4 Low Pressure System Abnormality169
E4 Actuation Of Pressure Sensor171
E4 Actuation Of Low Pressure Sensor175
E5 Compressor Motor Lock183
E6 Compressor Overcurrent188
Approximate Input Current Value190
E7 Outdoor Unit Fan Motor Abnormality191
E9 Electronic Expansion Valve Abnormality203
E9 Electronic Expansion Valve Coil Abnormality207
F3 Discharge Pipe Temperature Abnormality217
F3 Discharge Pipe Temperature Control225
F6 Abnormal Heat Exchanging Temperature227
F6 Refrigerant Overcharged229
H3 High Pressure Switch Abnormality231
H3 High Pressure Switch System Abnormality236
H4 Low Pressure Sensor System Abnormality238
H7 Outdoor Unit Fan Motor Signal Abnormality242
H9, J3, J5, J6, J7, J8 Thermistor System Abnormality244
H9 Outdoor Air Thermistor System Abnormality246
J1 Pressure Sensor Abnormality248
J2 Current Sensor System Abnormality250
J3 Discharge Pipe Thermistor System Abnormality252
J5 Suction Pipe Thermistor Abnormality255
J6 Heat Exchanger Thermistor System Abnormality257
J7 Liquid Pipe Thermistor Abnormality259
J9 Subcooling Heat Exchanger Gas Pipe Thermistor Abnormality261
Ja High Pressure Sensor Abnormality263
Jc Suction Pipe Pressure Sensor Abnormality266
L1 Outdoor Unit Pcb Abnormality268
L1 Outdoor Inverter Pcb Abnormality270
L4 Overcurrent Of Dc Output (Instantaneous)275
L4 Radiation Fin Temperature Rise277
Radiation Fin Temperature Detection Value279
L5 Overcurrent Of Dc Output (Instantaneous)285
L5 Momentary Overcurrent Of Inverter Compressor288
L5 Output Overcurrent Detection291
L5 Inverter Compressor Abnormality294
(L8) Electronic Thermal Switch (Time Lag)301
L8 Inverter Current Abnormality304
L8 Inverter Compressor Overcurrent307
L8 Electronic Thermal (Time Lag)310
L9 Stall Prevention (Time Lag)316
L9 Inverter Startup Error318
Lc Transmission Error Between Inverter And Control Pcb324
Lc Transmission Error (Between Control Pcb And Inverter Pcb)330
P1 Inverter Over-Ripple Protection333
P1 Open Phase Or Power Supply Voltage Imbalance336
P4 Radiation Fin Thermistor Abnormality338
P4 Radiation Fin Thermistor Or Related Abnormality342
Pj Defective Capacity Setting343
Pj Error In Capacity Setting345
Pj Field Setting Error After Replacing Main Pcb Or Defective Combination Of Pcb346
Pj Defective Combination Of Inverter And Fan Driver348
U0 Refrigerant Shortage354
U0 Low Pressure Drop Due To Refrigerant Shortage Or Electronic Expansion Valve Failure356
U1 Reverse Phase365
U2 Insufficient Voltage368
U2 Power Supply Voltage Abnormality370
U2 Power Supply Insufficient Or Instantaneous Failure372
U3 Check Operation Is Not Executed380
U4 Or Uf Transmission Error (Between Indoor Unit And Outdoor Unit)382
U4 Transmission Error Between Indoor Unit And Outdoor Unit388
U5 Transmission Error Between Indoor Unit And Remote Controller411
U7 Transmission Error Between Outdoor Units419
U8 Transmission Error Between Main Remote Controller And Sub Remote Controller422
U9 Transmission Error Between Indoor And Outdoor Units In The Same System428
Ua Defective Field Setting Switch431
Ua Improper Combination Of Indoor And Outdoor Units, Indoor Units And Remote Controller434
Ua Field Setting Switch Abnormality437
Ua Field Setting Switch And Transmission Line Abnormality440
Uc Centralized Address Setting Error444
Uc Address Duplication Of Centralized Controller445
Ue Transmission Error Between Centralized Controller And Indoor Unit446
Uf Mis-Connection Of Field Wiring454
Uf System Is Not Set Yet455
Uf Transmission Error Between Indoor And Outdoor Unit / Piping And Wiring Mismatch / Refrigerant Shortage457
Outdoor Units458
Uf Transmission System Abnormality (Between Indoor And Outdoor Units)462
Uh System Error, Refrigerant System Address Undefined463
Check For Fan Motor Connector (Signal Line)466
3.110 Check466
Check For Fan Motor Connector (Power Supply Line)467
Thermistor Resistance / Temperature Characteristics468
Evaluation Of Abnormal High Pressure471
In Cooling Operation471
In Heating Operation472
Evaluation Of Abnormal Low Pressure473
Check For Power Transistor475
Voltage Measuring Method477
Pressure Sensor For Except Rzq(S)-B, Rzq-C7 And Cmsq478
Pressure Sensor For Rzq(S)-B, Rzq-C7 And Cmsq479
Electronic Expansion Valve Connector And Coil Resistance Criteria480
Check For Factors Causing Wet Operation481
Check For Excessive Refrigerant Charging482
Check For Clogged Points484
Check For Inadequate Refrigerant485
Diagnosis Of Inadequate Refrigerant487
Fan Motor Pulse Check489
Check For Causes Of Rise In High Pressure490
Check For Causes Of Drop In Low Pressure492
Method of Checking Inverter's Power Transistors and Diode Modules495
Electronic Circuit496
Power Module Checking497
Diode Module Checking498
Broken Wire Check Of The Connecting Wires499
Warning501