Hitachi PC-ARFP1E Installations- Und Betriebshandbuch Seite 83

OTHER INDICATIONS
Code
Category
number
53 Protection activation of inverter module
54 Inverter Inverter fin temperature increase
55 Inverter module abnormality
Abnormal detection of fan motor
56
position
Outdoor fan Fan motor abnormality
57
Fan controller protection activation
58 Abnormal fan controller
5A Abnormal fan controller fin temperature
Fan controller
5b Overcurrent protection activation
5C Abnormal fan controller sensor
A1 External input Detection of external abnormality
b0 Incorrect setting of unit model code
Incorrect setting of the unit and the
b1
refrigerant cycle number.
b2 Indoor unit Abnormality of EEPROM
Incorrect indoor unit connection number
b5
setting
Abnormal communication between
b6
indoor PCB and indoor fan controller
C1 Incorrect change-over box connection
Connection number of the indoor unit
C2 CH box
incorrectly set
Incorrect indoor unit refrigerant number
C3
setting
Compressor protection alarm (it can not
EE Compressor
be reset from wired controller)
75 PMML0496 rev.1 - 12/2020
Abnormality
Inverter module abnormality.
Failure of compressor, clogging of heat exchanger.
Abnormal inverter fin thermistor, clogging of heat exchanger, abnormal
outdoor fan.
Failure of inverter module.
Abnormal of fan motor position detection circuit, disconnected wiring
Disconnected wire of incorrect wiring between control PCB, and inverter
PCB.
Incorrect wiring or fan motor abnormality.
Controller IC error signal detection (overcurrent, low-voltage and short-circuit
protection), instant overcurrent).
Abnormal operation speed
Fin thermistor fault, heat exchanger clogging, fan motor fault
Fan motor fault
Current sensor fault (instant overcurrent, increased fin temperature, low
voltage, earthing fault, step-out)
Input signal by external abnormality detection setting
Incorrect setting of indoor unit model
Over 64 indoor units setting by number or indoor unit address.
EEPROM failure, incorrect data of EEPROM
There are more than 17 units not corresponding to H-LINK II connected to
one system
Communication failure, disconnected communication cable, abnormal
connection
2 or more change-over boxes are connected between outdoor unit and
indoor unit
There are 9 or more indoor units connected to Change-Over Box
Indoor units from different refrigerant cycles have been connected to
Change-Over Box
This alarm code appears when the following alarms* occurs three times
within 6 hours. *02, 07, 08, 39, 43 to 45, 47
Cause