Diagnosis By Malfunction Code - Daikin VRV K Manual

SI-95.BOOK Page 75 Friday, March 31, 2000 10:59 AM
Si-95

1. Diagnosis by Malfunction Code

1.1

Diagnosis by Malfunction Code

Malfunction code
Troubleshooting Inverter K Series
Malfunction contents
A0 Indoor unit: Error of external protection device
A1 Indoor unit: PC board defect
A3 Indoor unit: Malfunction of drain level control system (33H)
A6 Indoor unit: Fan motor (M1F) lock, overload
A7 Indoor unit: Malfunction of swing flap motor (M1S)
A9 Indoor unit: Malfunction of moving part of electronic expansion valve
(Y1E)
AF Indoor unit: Drain level above limit
AJ Indoor unit: Malfunction of capacity determination device
C4 Indoor unit: Malfunction of thermistor (R2T) for liquid pipe
C5 Indoor unit: Malfunction of thermistor (R3T) for gas pipes
C9 Indoor unit: Malfunction of thermistor (R1T) for air inlet
CJ Indoor unit: Malfunction of thermostat sensor in remote controller
E0 Outdoor unit: Actuation of safety device
E1 Outdoor unit: PC board defect
E3 Outdoor unit: Actuation of high pressure switch
E4 Outdoor unit: Actuation of low pressure switch
E9 Outdoor unit: Malfunction of moving part of electronic expansion
valve (Y1E)
F3 Outdoor unit: Abnormal discharge pipe temperature
H9 Outdoor unit: Malfunction of thermistor for outdoor air (R1T)
J3 Outdoor unit: Malfunction of discharge pipe thermistor (R3T)
J5 Outdoor unit: Malfunction of thermistor (R4T) for suction pipe
J6 Outdoor unit: Malfunction of thermistor (R2T) for heat exchanger
JA Outdoor unit: Malfunction of discharge pipe pressure sensor
JC Outdoor unit: Malfunction of suction pipe pressure sensor
JH Outdoor unit: Malfunction of oil temperature thermistor (R5T)
U0 Low pressure drop due to refrigerant shortage or electronic
expansion valve failure
U1 Negative phase, open phase
U2 Power supply insufficient or instantaneous failure
U4 Malfunction of transmission between indoor units
U5 Malfunction of transmission between remote controller and indoor
unit
U7 Malfunction of transmission between outdoor units
U8 Malfunction of transmission between main and sub remote
controllers
U9 Malfunction of transmission between indoor and outdoor units or
between outdoor units in the same system
UA Excessive number of indoor units
Improper combination of indoor and outdoor units (incompatible
refrigerant), improper number of connected indoor units or remote
controllers (inappropriate remote controllers), faulty PCB model
setting (replacement PCB)
UC Address duplication of central remote controller
UF Refrigerant system not set, incompatible wiring/piping
UH Malfunction of system, refrigerant system address undefined
The system operates for malfunction codes indicated in black squares, however, be sure to
check and repair.

Diagnosis by Malfunction Code

Fan operation Page
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