Hitachi UTOPIA IVX PREMIUM Series Installations- Und Betriebshandbuch Seite 45

Troubleshooting
Code
Category
No.
01 Indoor Unit
02 Outdoor Unit
03
Transmission
04
05 Power Supply
06 Voltage Drop
07
Cycle
08
11
12
Sensor on
13
Indoor Unit
14
19
20
21
Sensor on
Outdoor Unit
22
24
31
35
System
38
45
Pressure
47
48
51
53
Inverter
54
55
57 Outdoor Fan
Indoor unit No.
b1
setting
EE Compressor
45
_PMML0251A_r2.indb 45
Content of Abnormality
Tripping of Protection Device
Tripping of Protection Device
Abnormality between Indoor (or Outdoor) and
Outdoor (or Indoor)
Abnormality between Inverter and Control PCB
Abnormality power supply
Voltage Drop by Excessively Low or High Volt-
age to Outdoor Unit
Decrease in Discharge Gas Superheat
Increase in Discharge Gas Temperature
Inlet Air Thermistor
Outlet Air Thermistor
Freeze Protection Thermistor
Gas Piping Thermistor
Tripping of Protection Device for Fan Motor
Compressor Thermistor
High Pressure Sensor
Out+door Air Thermistor
Evaporating Thermistor
Incorrect Setting of Outdoor and Indoor Unit
Incorrect Setting in Indoor Unit No.
Abnormality of Protective Circuit in Outdoor Unit
Activation of High Pressure Increase Protection
Device
Activation of Low Pressure Decrease Protection
Device
Activation of overload protection
Abnormality of Current Sensor for Inverter
Protection Activation of Transistor Module
Inverter Fin Temperature Increase
Inverter Module Abnormality
Fan Motor Abnormality
Incorrect address No. Setting or refrigerant
cycle
Compressor protection alarm
PMML0251A rev.2 - 02/2013
Leading Cause
Failure of Fan Motor, Drain Discharge, PCB, Relay, Float Switch
Activated
Activation of PSH, Locked Motor
Incorrect Wiring, Failure of PCB, Tripping of Fuse, Power Supply
OFF
Failure in Transmission between PCBs for Inverter
Abnormal wave form of power supply.
Voltage Drop of Power Supply. Incorrect Wiring or insufficient Capac-
ity of Power Supply Wiring
Excessive Refrigerant Charge, Expansion Valve Open Lock
Insufficient Refrigerant, Ref. Leakage, Clogging or Expansion Valve
Close Lock
Failure of Thermistor, Sensor, Connection.
Failure of Fan Motor
Failure of Thermistor, Sensor, Connection
(Incorrect Wiring, disconnecting wiring, breaking wire, short circuit)
Incorrect Setting of Capacity Code.
Duplication of Indoor Unit number, Nº of Indoor unit over specifica-
tions.
Failure of Indoor Unit PCB. Incorrect wiring. Connection to PCB in
Indoor Unit.
Overload Operation (Clogging, Short-Pass), Pipe Clogging, Exces-
sive Refrigerant, Inert Gas Mixing
Stoppage by Excessively Decrease of evaporating Temperature
(Te < -35ºC) is activated 3 times in one hour, Locked Motor in Heat-
ing Operation.
Failure of IPM or PCB2, heat exchanger clogged, locked compres-
sor, EVI/EVO failure or overcharge.
Failure of Control PCB, Inverter Module.
Transistor Module Abnormality.
Failure of Compressor, clogging of Heat Exchanger.
Abnormal Inverter Fin Thermistor.
Clogging of Heat Exchanger
Abnormal Outdoor Fan
Failure of Inverter Module.
Disconnected wire of Incorrect wiring between Control PCB and
Inverter PCB.
Incorrect Wiring or Fan Motor Abnormality
Over 64 indoor units setting by No. or indoor unit address.
Failure of compressor.
06/02/2013 9:05:17