Hitachi 3HRNM1Q Installation & Maintenance Manual page 33

Table 7.4 Alarm Code (RAS-4/5HRNM1(Q) and RAS-5HYNM1(Q))
Code
Category
No.
Indoor Unit Activating of Protection Device
01
02 Outdoor Unit
03
Abnormality between I.U. and O.U./O.U. and O.U.
Transmission
04 Abnormality between Inverter PCB and O.U.PCB
Supply Phases
05
Abnormal Inverter Voltage
Voltage Drop
06
07
Cycle
08
Outdoor Unit
09
11
12
Outlet Air Thermistor
13
Freeze Protection Thermistor
Sensor on
14
Indoor Unit
Gas Piping Thermistor
16
Remote Contorl Thermistor
17
Remote Contorl Switch Thermistor
21
22
Sensor on
23
Outdoor Unit
24
29
Incorrect Capacity of O.U.and I.U.
31
System
Incorrect Setting of I.U.No.
35
36
Incorrect Combination of I.U.No.
Abnormality of Protective Circuit in O.U.
38
Activation of Low-Pressure
43
Decrease Protection Device
Activation of Low-Pressure
44
Increase Protection Device
Pressure
Activation of High-Pressure
45
Increase Protection Device
Activation of Low-Pressure Decrease
47
Protection Device(Vacuum Operation)
Activation of Inverter
48
Overvurrent Protection Device
51
Abnormal Current Sensor
53
Inverter Error Signal Detection
Inverter
54
Increase of Inverter Fin Temperature
55
Inverter Failure
Fan Motor Abnormality
57 Outdoor Fan
Compressor
EE
Indoor Unit
Incorrect of Address or Ref.Cycle setting
b1
No. Setting
Indoor Unit
b5
No.Connected
Content of Abnormality
Activating of Protection Device
Abnormal Power Source Phase
Decrease of Discharge Gas Temperature
Increase of Discharge Gas Temperature
Activation of Protection Device for Indoor
Unit Fan
Inlet Air Thermistor
High Pressure Sensor
Outlet Air Thermistor
Discharge Gas Thermistor
Evaporating Piping Thermistor
Low Pressure Sensor
Compressor Protection Alarm
Incorrect I.U.No. Connected
Activation of Float Switch,
High Water Level in Drain Pan.
Activation of PSH, Pipe Clogging.
Excessive Ref., Inert Gas Mixing.
Incorrect Wiring. Loose Terminals,
Disconnected wire, Tripping of Fuse.
Transmission Failure (Loose Connector).
Incorrect Power Source Connection to
Reversed-Phase, Open Phase
O.U.Voltage Drop Insufficient Power Capacity
Excessive Ref.Charge, Failure of Thermistor,
Incorrect Wiring
Insufficient Ref.Charge, Pipe Clogging,
Failure of Thermistor, Incorrect Wiring
Fan Motor Overheat, Locking.
Incorrect Wiring,
Disconnected Wiring
Incorrect Wiring,
Disconnected Wiring
Incorrect Setting of Capacity Combination
Duplication of Indoor Unit No.
Refrigerant of Indoor Unit No.
Failure of Protection Detecting Circuit
Detective Compression(Failure of Compressor
of Inverter,Loose Power Supply Connection)
Overload at Cooling High Temp.at Heating
Locking (Loose Connector)
Overload Operation(Clogging,Short-Pass),
Pipe Clogging, insufficient Ref.Inert Gas Mixing
Insufficient Ref.,Ref.Pipe Clogging,
Locking(Loose Connector)
Overload Operation, Comp.Failure
Current Sensor Failure
Driver IC Error Signal Detection,(Protection
for Overcurrent,Low Voltage, Short-Circuit)
Abnormal Inverter Fin Thermistor,
Heat Exchanger Clogging,Abnormal Fan
Inverter PCB Failure
Disconnected Wiring/Incorrect Wiring
between Control PCB(PCB1) and Fan Relay
PCB(PCB3,PCB5), Fan Motor Failure
Failure of Compressor
Over 64 NO.is set for Address or Ref.Cycle
More than 17 Non-Corresponding to H-LINK 2
Units are Connected to One System
26
Leading Cause