04-408 InverterW_Tech_p51-108
Possible cause of malfunction
Activation of
Protective device in outdoor unit
protective
is activated.
device
Indoor thermistor is either open
Thermistor
fault
or damaged.
Outdoor thermistor is either
open or damaged.
EEP ROM on indoor unit P.C.B. failure
Protective
Protective device for compressor
No. 1 is activated.
device for
compressor is
activated
Protective device for compressor
No. 2 is activated.
Low oil level.
Oil sensor fault.
(Disconnection, etc.)
12/16/04
3:25 PM
Page 91
Compressor thermal protector is activated.
Power supply voltage is unusual. (The voltage is more than 260 V
or less than 160 V between L and N phase.)
Incorrect discharge temperature. (Comp. No. 1)
High pressure switch is activated.
Negative (Defective) phase.
Incorrect discharge temperature. (Comp. No. 2)
Outdoor unit fan motor is unusual.
Compressor running failure resulting from missing phase in the
compressor wiring, etc. (Start failure not caused by IPM or no gas.)
Negative (defective) N phase.
Overcurrent at time of compressor runs more than 80Hz (DCCT
secondary current or ACCT primary current is detected at a time
other than when IPM has tripped.)
IPM trip (IPM current or temperature)
Inverter for compressor is unusual. (DC compressor does not
operate.)
Indoor coil temp. sensor (E1)
Indoor coil temp. sensor (E2)
Indoor coil temp. sensor (E3)
Indoor suction air (room) temp. sensor (TA)
Indoor discharge air temp. sensor (BL)
Comp. No. 1 discharge gas temp. sensor (DISCH1)
Comp. No. 2 discharge gas temp. sensor (DISCH2)
Outdoor No. 1 coil gas temp. sensor (EXG1)
Outdoor No. 1 coil liquid temp. sensor (EXL1)
Outdoor air temp. sensor (AIR TEMP)
Compressor intake port temperature sensor (RDT)
High pressure sensor
Outdoor No. 2 coil gas temp. sensor (EXG2)
Outdoor No. 2 coil liquid temp. sensor (EXL2)
EEP ROM on the main or sub outdoor unit P.C.B. is a failure.
Overload current is detected.
Lock current is detected.
Current is not detected when comp. No. 1 is ON.
Discharge gas temperature of the comp. No. 1 is not detected.
Temp. sensor is not seated at the sensor holder.
Overload current is detected.
Lock current is detected.
Current is not detected when comp. No. 2 is ON.
Discharge gas temperature of the comp. No. 2 is not detected.
Low pressure switch is activated.
Comp. No. 1 oil sensor
Comp. No. 2 oil sensor
91
Alarm
message
P02
P03
P04
P05
P17
P22
P16
P26
H31
P29
<<F01>>
<<F02>>
<<F03>>
<<F10>>
<<F11>>
F04
F05
F06
F07
F08
F12
F16
F23
F24
F29
F31
H01
H02
H03
H05
H11
H12
H13
H15
H06
H07
H08
H27
Continued
K
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