Troubleshooting - AUX ALMD-NHA Serie Benutzer- Oder Installationshandbuch

5. TROUBLESHOOTING

5.1. T roubles and causes of air conditioner
If one of the following malfunctions occur, stop operation, shut
off the power, and contact with your dealer.
If the system does not properly operate except the above
mentioned cases or the above mentioned malfunctions is
evident, investigate the system according to the following
procedures.
Table 5-1 Error codes displayed on the receiver display of the indoor unit or on the wired remote control
Nº Code Unit
1 AA Indoor Communication failure of wire controller
2 A1 Indoor Indoor ambient temp sensor failure
3 A2 Indoor Indoor coil temp sensor failure
A5 Indoor Drain pump failure
4
A6 Indoor Indoor fan motor failure
5
A8 Indoor Indoor unit EPROM failure
6
7 A9 Indoor Communication failure between indoor unit and outdoor unit
Indoor Indoor high temp protection in heating
8 E8
Outdoor Overload protection in cooling mode
31 Outdoor IPM module protection (F0)
9
32 Outdoor IPM module hardware protection
10
11 33 Outdoor IPM module software protection
12 34 Outdoor Compressor unconnected
13 35 Outdoor Over power current protection
Over/low power voltage protection
14 36 Outdoor
Over/low main line voltage protection
37 Outdoor Outdoor module heat fins temp sensor failure
15
16 38 Outdoor IPM module high temperature limit frequency protection
17 39 Outdoor IPM module protection
C1 Outdoor Outdoor ambient temp sensor failure
18
C2 Outdoor Outdoor coil temp sensor failure
19
C3 Outdoor Outdoor discharge temp sensor failure
20
21 C6 Outdoor Suction temp sensor failure
22 C8 Outdoor Outdoor defrost temp sensor failure
E3 Outdoor High discharge temp protection
23
FH Outdoor Low discharge temp protection
24
E1 Outdoor 4way-valve failure
25
F1 Outdoor Outdoor DC fan motor failure
26
27 H1 Outdoor High pressure switch protection
28 H4 Outdoor Low pressure switch protection
Communication failure between the driver PCB and main PCB
29 J6 Indoor
of the indoor unit
J3 Outdoor Communication failure between PCB and IPM module
30
31 3H/5H Outdoor Communication failure between main PCB and DC fan motor module
32 J7 Outdoor Main control PCB EPROM failure
3E Outdoor DC inverter compressor running out of step
33
Please cut off the power supply when appearing the
above malfunction, check if the voltage provided is out of
range, check if the installation of air-conditioner is
correct, then electrify again after 3 minutes power off. If
the problem is still existent, please contact the local
service station or the equipment provider.
Description
81
CAUTION