Alarm Codes - Hitachi PC-ARF Technical Catalogue

4 Individual remote controls
PC-ARF

In Abnormal Condition
Abnormality
The RUN (red) indicator flashes and the ALARM indicator appears on the liquid crystal display.
The screen also displays the following items:
- A: indoor unit address.
- B: Refrigerant cycle number.
- C: Alarm code.
- D: Model code.
Indication
H
P
F
C
E
b
L
- E: If there are various indoor units connected, the above mentioned information is shown for each one of them.
Power failure
All displays disappear.
If the unit stops due to a power shortage, it will not start again, even though the power comes back on. Carry out the start-
up operations again.
If the power failure lasts less than 2 seconds, the unit will start again automatically.
Electrical noise
The displays can disappear from the screen and the unit can stop. This is because the microcomputer has been activated
to protect the unit from electrical noise.

4.1.4.7 Alarm codes

The Alarm code corresponds to the alarm that is happening on the unit.
Refer to the Service Manual of the unit to know the meaning of the alarm code.
114
TCGB0106 rev.0 - 12/2014
B
01-02
22
Alarm Code:
MODEL : b .02
SEL. OP MODE
D
Model code
Model
Heat pump
Inverter
Multi (SET-FREE)
Cooling only
Other
IVX, individual operation
KPI
A
C
ALM RST
ADDR
ENT.
OK
E