Alarmcodes - Hitachi RAS-5FSN Installations- Und Betriebshandbuch

18. ALARM CODES
If RUN lamp flashes for 2 seconds, there is a failure in
transmission between Indoor Unit and Remote Control
Switch. Possible causes are:
Remote Cable broken
Contact Failure in Remote Control Cable
IC or Microcomputer defective
In any case, ask your contractor for service
Code
Category Content of Abnormality
No.
01 Indoor Unit Tripping of Protection Device
02 Outdoor Unit Tripping of Protection Device
Abnormality between Indoor (or Outdoor) and
03 Transmission
Outdoor (or Indoor)
04
Inverter Abnormality between Inverter and Control PCB
04.
05 Transmission Abnormality of Power Source Wiring
Voltage Drop by Excessively Low or High Voltage
06 Voltage Drop
to Outdoor Unit
07 Decrease in Discharge Gas Superheat
Cycle
08 Increase in Discharge Gas Temperature
09 Outdoor Unit Tripping of Protection Device
11 Inlet Air Thermistor
12 Outlet Air Thermistor
Sensor on
13 Freeze Protection Thermistor
Indoor Unit
14 Gas Piping Thermistor
19 Tripping of Protection Device for Fan Motor
21 High Pressure Sensor
22 Outdoor Air Thermistor
23 Discharge Gas Thermistor on Comp.
24 Evaporating Thermistor
29 Low Pressure Sensor
30 Incorrect wiring connection
Sensor on
31 Incorrect Setting of Outdoor and Indoor Unit
Outdoor Unit
32 Abnormal Transmission of Other Indoor Unit
35 Incorrect Setting in Indoor Unit No.
36 Incorrect Indoor unit Type
38 Abnormality of Protective Circuit in Outdoor Unit
Abnormality of Running Current at Constant
39
Compressor
43 Pressure Ratio Decrease Protection Activating
44 Low Pressure Increase Protection Activating
Pressure
45 High Pressure Increase Protection Activating
46 High Pressure Decrease Protection Activating
47 Low Pressure Decrease Protection Activating
51 Abnormality of Current Sensor for Inverter
52 Overcurrent Protection Activating
53 Inverter IPM Protection Activating
54 Increase in Inverter Fin Temperature
56 Abnormality of Detection for Fan Motor Position
57 Outdoor Fan Fan Controller Protection Activating
58 Abnormality of Fan Controller
EE Inverter Compressor Protection
If RUN lamp flashes 5 times (5 seconds) with unit number and
alarm code displayed, note the alarm code (see table below)
and ask your contractor for service.
Unit Number Alarm Code
Refrigerant Cycle Number Number of connected Units
Leading Cause
Failure of Fan Motor, Drain Discharge, PCB, Relay.
Activation of PSH
Incorrect Wiring. Failure of PCB. Tripping of Fuse. Power Supply
OFF
Failure in Transmission between PCBs
Fan controller transmission failure
Reverse Phase Incorrect Wiring.
Voltage Drop of Power Supply. Incorrect Wiring or insufficient
Capacity of Power Supply Wiring.
Excessive Refrigerant Charge. Expansion Valve Open Lock.
Insufficient Refrigerant. Ref. Leakage, Clogging or Expansion Valve
Close Lock
Failure of Fan Motor.
Failure of Thermistor, Sensor, Connection.
Failure of Fan Motor
Failure of Thermistor, Sensor, Connection
Incorrect wiring connection between outdoor unit, CH unit and
indoor unit
Incorrect Setting of Capacity Code.
Failure of Power Supply, PCB in other Indoor Unit. Failure of other
Indoor Unit of the same Refrigerant Cycle
Existence of the same Indoor Unit No. in the same Refrigerant Cycle
Indoor Unit is not for R410A
Failure of Indoor Unit PCB. Incorrect wiring. Connection to PCB in
Indoor Unit.
Overcurrent, Blown Fuse of Failure of Current Sensor.
Failure of Compressor, Inverter
Overload to Indoor in Cooling. High Temperature of Outdoor Air In
Heating Expansion Valve Open Lock
Overload Operation. Excessive Refrigerant. Clogging of Heat
Exchanger
Insufficient Refrigerant.
Insufficient refrigerant .
Failure of Sensor on Inverter PCB
Overload, Overcurrent, Locking to Compressor.
Automatic Stoppage of IPM (Overcurrent, Low Voltage or
Overheating).
Abnormal Inverter Fin Thermistor.
Abnormal Outdoor Fan
Abnormal detection Circuit of Transmission
Abnormal Fan Speed
Overcurrent, Abnormal Fan Controller Fin
3 Time Occurrence of Alarm Giving Damage to Compressor within 6
hours
ALARM CODES
31
Model Code