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AU48NFIBIA malfunction code:
Malfunction description
Code
LED display on
the regulating
board
If sent to
indoor unit?
Remarks
Normal 0
Normal
Yes
Defrosting temperature
sensor abnormal
1 E.4.
Yes
Resumable
Ambient temperature sensor
abnormal
2 E.1.
Yes Resumable
Suction temperature sensor
abnormal
3 E.3.
Yes Resumable
Discharging temperature
sensor abnormal
4 E.2.
Yes Resumable
Coil temperature sensor
abnormal
5 E.5.
Yes Resumable
O.C.
Yes
Over current protection
6
P O.C.
no
After there are current malfunction for 3
times in 1 hour, the testing board will
display the last abnormal reason P X.X.
Need powered off and restart
Current sensor abnormal
7
C.T.
Yes
After trouble shooting, need powered off
and restart
O.L. Yes
Overload protection
8
P O.L.
no
E.P. Yes
IPM protection
9
P E.P.
no
After there are current malfunction for 3
times in 1 hour, the testing board will
display the last abnormal reason P X.X.
Need powered off and restart
Read EEPROM value
wrongly
10
P E.E.
no
Need reset and restart
O.D. Yes
Discharging temperature
over high abnormal
11
P O.D.
no
After there are current malfunction for 3
times in half an hour, the testing board
will display the last abnormal reason P
X.X. Need powered off and restart
High pressure switch
abnormal
12 O.P.
Yes
Resumable
L.U.
Voltage over low protection
13
P L.U.
Yes
O.U.
Voltage over high protection
14
P O.U.
Yes
After there are voltage malfunction for 3
times in 1 hour, the testing board will
display the last abnormal reason P X.X.
Need powered off and restart
Compressor overheat
protection
15 O.H.
Yes
Resumable
Recover the parameter set
when out of factory
16
P I.A.
no
Need reset and restart
Clear the malfunction
memory
17
P C.T.
no
Need reset and restart
Need reset
18
P r.E.
no
Need reset and restart
Radiator temperature sensor
abnormal
-- --
No use
temporarily
-178-
Summary of Contents for H-MRV AF092FCBHA
Page 121: ... _ VbTZR Zb _ UZdZ_ Vb AU242FHBHA PCB top layer printed diagram 121 ...
Page 122: ... _ VbTZR Zb _ UZdZ_ Vb AU242FHBHA PCB bottom layer printed diagram 122 ...
Page 127: ... _ VbTZR Zb _ UZdZ_ Vb AU482FIBHA high voltage PCB printed diagram 127 ...
Page 131: ... _ VbTZR Zb _ UZdZ_ Vb AU482FIBHA low voltage PCB printed diagram 131 ...
Page 152: ... a__WcU S c a V e a Wc AB092 182FCBHA PCB printed diagram 152 ...
Page 156: ... a__WcU S c a V e a Wc AE FCBKA PCB printed diagram 156 ...
Page 199: ...MEMO Commercial Air Conditioner ...