Fault Diagnosing; Inspection Method - Haier AU96NFTAHA Service Manual

10

Fault diagnosing

1.Inspection method

Standby display
Remote
Capability overloadAbnormal phasedifferent mode
controller
Indoor unit Indoor unit
Outdoor unit
I / F
I N V
Inspection code of LCD remote controller
Remote controller
Serial remote
controller
Signal loop
Indoor unit
1.Room temperature sensor
(TA) circuit
2.Indoor heat exchanger sensor (TC1) circuit3.Indoor heat exchanger sensor (TC2) circ
7.Judgment of insufficient
c y c l e a m o u n t
11. Display of external input
12.Display of external
14.Indoor PCB circuit
INV
Overcurrent protectioncircuit of converterCircuit of current sensorCircuit of compress
Display inspection code on the 7-degment nixie tube of I/F PCB of outdoor unit
51
99
1.Frequency conversion serial
signal loop, TRS circuit2.Outdoor heat exchanger sensor(TE) cir
"0C"
(TD1) circuit of inverter
compressor
"93"
4.Exhaust temperature sensor
o f refrigerant8.Indoor and outdoor
(TD2) circuit of inverter
"94"
compressor5.Suction temperature sensor (TS) circuit6.High pre
interlocking13.Mismatching line and
9.High pressure protection action
"b9"
(Pd sensor)
10.Exhaust temperature (TD1)
"11"
protection action of frequency
conversion compressor
"0b"
11.Exhaust temperature (TD2)
protection action of fixed
frequency compressor
12.Suction temperature (TS)
"9F"
protection action
13.Exhaust temperature (TD1)
"95"
protection action of frequency
conversion compressor at
"97"
low frequency14.Low pressure protection action15.Hig
for fixed frequency compressor16.Frequency conversion
"98"
18.Pressure sensor (Pd, Ps)
"b5"
mismatching line19.Indoor and outdoor communication cir
20.Contradiction of indoor and
"b6"
outdoor address
21.Control display of Mg.SW1
contact bonding
"9A"
22.Capacity overloading of
"12"
connecting indoor unit group
"14"
"17"
"1d"
"1F"
"21"
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I / F
"04"
"18"
communication circuit9 . C
"A0"
wrong connection o
"A1"
"A2"
"AA"
"b4"
"1C"
"22"
"A6"
"bb"
"A7"
"AE"
"bE"
"E1"
"E5"
"E6"
"Ab"
"95"
"96"
"bd"
"89"