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11. Failure Code
The nixie light of the outdoor unit control panel displays malfunction code directly when malfunction occurs.
(This malfunction table only applies to the follow models referred in this manual.)
AU282FHERA, AU482FIERA (G), AU48NFIERA (G), AU60NFIERA (G)
malfunction code and malfunction conrming
Malfunction
code
Indication
on wired
controller
Malfunction position
1 21 Circuit TE of defrosting temp. sensor
2 22 Circuit TA of environment temp. sensor
3 23 Circuit TS of compressor suction temp. sensor
4 24 Circuit TD of compressor discharge temp. sensor
5 25 Circuit TC of condenser middle part temp. sensor
6 26 Incorrect dipswitch setting for model selection on outdoor PCB
7 27 Current sensor failure
8 28 DC motor failure
9 29
Alarm and stop when the testing indoor numbers are inconsistent with the initial
searched locked numbers which can recoverable
10 2A Fault of reading EEROM
11 2B Protecting action of compressor discharge temperature (TD)
12 2C Protecting action of IPM temperature
13 2D High pressure switch open circuit
14 2E Low pressure switch open circuit
15 2F Discharging temp. too low of inverter compressor
16 30 Protecting action of compressor suction temperature (TS)
17 31
Alarm and stop when starting indoor capacity exceed 160% of outdoor capacity which
can recoverable automatically
18 32
Alarm and stop when current exceed the standard value which can recoverable
automatically
20 34 Communicating fault if control panel and IPM
21 35 Compressor over current
22 36 Communicating fault of indoor and outdoor units
23 37 IPM fault (For signal trip)
24 38 IPM temperature too high
25 39 Over current at acceleration state (hardware trip)
26 3A Over current at steady state (hardware trip)
27 3B Over current at deceleration state (hardware trip)
28 3C DC bus under voltage
29 3D DC bus over voltage
30 3E Over current at acceleration state (software trip)
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