In Abnormal Condition; Power Failure - Hitachi PC-ARFP1E Installations- Und Betriebshandbuch

OTHER INDICATIONS

10.2 IN ABNORMAL CONDITION

B
00-00
Alarm Code:
MODEL :E .00
Sel.
D
10.2.1 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.
10.3 ALARM CODES
Code
Category
number
01 Indoor unit Activation of the safety device
02 Outdoor unit Activation of the safety device
Abnormal transmission between
03
outdoor and indoor units
Transmission
Abnormal transmission between
04
inverter PCB and outdoor unit PCB
05 Power supply Abnormality of power supply phases
06 Voltage Abnormal Inverter Voltage
72 PMML0496 rev.1 - 12/2020
A
13
C
AlarmRst
Address
OK Entr
E
Model code
Model
Heat pump
Inverter
Multi (SET-FREE)
Cooling only
Other
IVX, individual operation
KPI
Abnormality

10.2.2 Power failure

All the indications are OFF.
Once the unit is stopped by the power failure, the unit will not be
started again although the power recovers. Perform the starting
procedures again.
In case of instantaneous power failure within 2 seconds, the unit
will be started again automatically.
10.2.3 Electric noise
There could be a case that all the indications are OFF and the
unit is stopped. This is occurred by the activation of the micro
computer for the unit protection from the electric noise.
Perform the starting procedures again.
Activation of lloat switch (high water level in drain pan, abnormality of drain
pipe, float switch or drain pan)
Activation of PSH (pipe clogging, excessive refrigerant, inert gas mixing)
Incorrect wiring, loose terminals, disconnected, communication cable,
blowout of fuse, indoor unit power OFF
Inverter PCB-Outdoor PCB communication failure
(loose connector, wire breaking, blowout of fuse)
Incorrect power supply, connection to reversed phase, open-phase
Outdoor voltage decrease, insufficient power capacity
Cause