Haier AU96NFTAHA - Fault Diagnosing; Inspection Method

51
1.Inspection method
Standby display
Capability overloadAbnormal phasedifferent mode
Remote
controller
Remote controller
Inspection code of LCD remote controller
Serial remote
controller
Signal loop
Indoor unit
99
Outdoor unit
Indoor unit Indoor unit
1.Room temperature sensor
(TA) circuit
2.Indoor heat exchanger sensor (TC1) circuit3.Indoor heat exchanger sensor (TC2) circuit4.Indoor pressure sensor circuit5.Motor circuit (phase control)6.Drain pump float switch system circuit
7.Judgment of insufficient
cycle a m o unt of refrigerant8.Indoor and outdoor communication circuit9.Centralized control communication circuit10.Address setting of centralized control
11. Display of external input
12.Display of external interlocking13.Mismatching line and wrong connection of indoor unit group
14.Indoor PCB circuit
"04"
"93"
"94"
"b9"
"11"
"0b"
"9F"
"95"
"97"
"98"
"b5"
"b6"
"9A"
"12"
INV
Overcurrent protectioncircuit of converterCircuit of current sensorCircuit of compressorsystemCircuit of currentinspectionHigh-pressure switchcircuit for invertorcompressor
"14"
"17"
"1d"
"1F"
"21"
I / F
I N V
1.Frequency conversion serial
signal loop, TRS circuit 2.Outdoor heat exchanger sensor(TE) circuit 3.Exhaust temperature sensor
(TD1) circuit of inverter
compressor
4.Exhaust temperature sensor
(TD2) circuit of inverter
compressor5. Suction temperature sensor (TS) circuit 6.High pressure sensor (Pd) circuit7.Low pressure sensor (PS) circuit8.I/F PCB circuit
9.High pressure protection action
(Pd sensor)
10.Exhaust temperature (TD1)
protection action of frequency
conversion compressor
11.Exhaust temperature (TD2)
protection action of fixed
frequency compressor
12.Suction temperature (TS)
protection action
13.Exhaust temperature (TD1)
protection action of frequency
conversion compressor at
low frequency14.Low pressure protection action15.High pressure switch circuit
for fixed frequency compressor16. Frequency conversion IOL circuit 17.IOL, OL circuit of frequency conversion abnormal phase sequence of 3-phase of outdoor unit
18.Pressure sensor (Pd, Ps)
mismatching line19. Indoor and outdoor communication circuit
20.Contradiction of indoor and
outdoor address
21.Control display of Mg.SW1
contact bonding
22.Capacity overloading of
connecting indoor unit group
I / F
"0C"
"18"
"A0"
"A1"
"A2"
"AA"
"b4"
"1C"
"22"
"A6"
"bb"
"A7"
"AE"
"bE"
"E1"
"E5"
"E6"
"Ab"
"95"
"96"
"bd"
"89"
Display inspection code on the 7-degment nixie tube of I/F PCB of outdoor unit
10
Fault diagnosing
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