AUX ALCF-H18/NDR3HA, Service Manual

Page: 162 / 174

R32
High Efficiency DC Inverter LCAC
Part13 Trouble Shooting
1. Failure code display
SN
ERROR CODE
(display board)
(wired
controller)
DESCRIPTION
1 31 Fault with the inverter module protection
2 35 Fault with the over-electric current protection
3 36 Fault with the over-voltage or low voltage protection
4 38
Fault with the Compressor Power supply Phase deficiency
protection
5 3E Fault with the compressor start
6 3H Fault with the Fan motor of outdoor unit
7 A1 Fault with the room temperature seneor(Tico) on the indoor unit
8 A2 Fault with the temperature seneor(Ticm) on the indoor unit
9 A5 Fault with the drainage
10 A6 Fault with the Fan motor of indoor unit
11 A9
Communication error between the outdoor unit and the indoor
unit
12 AA
Communication error between the wired controler and main PCB
of the indoor unit
13 AJ Fault with anti-Frozen protection of indoor unit in heating model
14 C1
Fault with the Enviromental temperature seneor(Tao) on the
outdoor unit
15 C3 fault with the discharge temperature sensor
16 C6 fault with the suction temperature sensor
17 C8 Fault with the temperature seneor(Tcm) on the outdoor unit
18 E1 fault of four way valve
19 E3 Protection high temperature discharge
20 E8
Fault with anti-high temperature protection of indoor unit in
heating model
21 F6 fault with the low pressure
22 FH Protection lower temperature discharge
23 H1 fault with the High pressure switch
24 H4 fault with the low pressure switch
25 J3
Communication error between the driver PCB and main PCB of
the outdoor unit
26 J6
Communication error between the driver PCB and main PCB of
the indoor unit
27 J7 Fault with the outdoor unit EPROM