Hitachi RAS-3HVRNM2 - Page 56

2-128
TC-12001
OUTDOOR UNIT
52
P5414950-rev.1
Table 10.2 Alarm Code
Code Category Content of Abnormality Leading Cause
01 Indoor Unit
Activation of Protection Device
(Float Switch)
Activation of Float Switch
(High Water Level in Drain Pan, Abnormality of
Drain Pipe, Float Switch or Drain Pan
02 Outdoor Unit
Activation of Protection Device
(High Pressure Cut)
Activation of PSH (Pipe Clogging, Excessive
Refrigerant, Insert Gas Mixing, Fan Motor Locking
at Cooling Operation)
03
Transmission
Abnormality between Indoor and Outdoor
Incorrect Wiring, Loose Terminals, Disconnect
Wire, Blowout of Fuse, Outdoor Unit Power OFF
04
Abnormality between Inverter PCB and
Outdoor PCB
Inverter PCB - Outdoor PCB Transmission Failure
(Loose Connector, Wire Breaking, Blowout of
Fuse)
05 Supply Phase Abnormality of Power Source Phases Reverse Phase due to Incorrect Wiring
06 Voltage Abnormal Inverter Voltage 2XWGRRU9ROWDJH'URS,QVXI¿FLHQW3RZHU&DSDFLW\
07
Cycle
Decrease in Discharge Gas Superheat
Excessive Refrigerant Charge, Failure of
Thermistor, Incorrect Wiring, Incorrect Piping
Connection, Expansion Valve Locking at Opened
Position (Disconnect Connector)
08
Excessively High Discharge Gas
Temperature at Top of Compressor
Chamber
Shortage of Refrigerant, Leaking, Pipe Clogging
11
Sensor on
Indoor Unit
Inlet Air Thermistor
Incorrect Wiring, Disconnecting Wiring, Breaking
Wire, Short Circuit
12
Outlet Air Thermistor
13
Freeze Protection Thermistor
14 Gas Piping Thermistor
19 Fan Motor
Activation of Protection Device for Indoor
Fan Motor
Fan Motor Overheat, Locking (49FE) (130
o
C OFF)
20
Sensor on
Outdoor Unit
Compressor Thermistor
Incorrect Wiring, Disconnecting Wiring, Breaking
Wire, Short Circuit
21 High Pressure Sensor
22 Outdoor Air Thermistor
24
Piping Thermistor
Incorrect Wiring, Disconnecting Wiring, Breaking
Wire, Short Circuit, Fan Motor Locking at Heating
Operation
31
System
Incorrect Capacity Setting of Outdoor Unit
and Indoor Unit
Incorrect Capacity Code Setting of Combination
([FHVVLYHRU,QVXI¿FLHQW,QGRRU8QLW7RWDO&DSDFLW\
Code
35
Incorrect Setting of Indoor Unit No.
Duplication of Indoor Unit No. in same Ref. Group,
The number of the indoor unit is out of range.
38
Abnormality of Picking up Circuit for
Protection in Outdoor Unit
Failure of Protection Detecting Device
(Incorrect Wiring of Outdoor PCB)
45
Protection
Device
Activation of High Pressure Increase
Protection Device
Overload Operation (Clogging, Short-Pass), Pipe
Clogging, Excessive Refrigerant, Inert Gas Mixing
47
Activation of Low Pressure Decrease
Protection Device
(Vacuum Operation Protection)
,QVXI¿FLHQW5HIULJHUDQW5HIULJHUDQW3LSLQJ
Clogging, Expansion Valve Locking at Open
Position (Loose Connector), O.U. Fan Motor
Locking at Heating Operation
48 Activation of Overcurrent Protection
Excessive Refrigerant, Heat Exchanger Clogging,
Increasing Pressure by Abnormality of Cycle
Portions, Abnormality of Compressor (Overload,
Locking, Overcurrent)
51
Inverter
Abnormality of Current Sensor for Inverter Overload Operation (Heat Exchanger Clogging)
53
Activation of Transistor Module Protection
Device
Abnormality of Inverter (Overload, Overcurrent,
Abnormality of Rotation, Activation Failure),
Compressor Failure
54 Abnormality of Inverter Fin Temperature
Abnormal Fin Thermistor Failure, Heat Exchanger
Clogging. Fan Motor Failure
55 Inverter Failure Inverter PCB Failure
57 Outdoor Fan Abnormality of Fan Motor
Disconnecting Transition Wiring for Fan Motor,
Abnormality of Fan Motor or Terminal for Inverter,
Incorrect Wiring
b1
Outdoor Unit No.
Setting
Incorrect Setting of Unit and Refrigerant
Cycle No.
Over 64 number is set for address or refrigerant
Cycle.
EE Compressor Compressor Protection Alarm
This alarm code appears when the following
alarms* occurs three times within 6 hours.
*02, 07, 08, 47