27
able 8.3 Alarm Code
T
Code
No.
Category
Content of Abnormality
Leading Cause
01
Indoor Unit
Activating of Protection Device
High Water Level in Drain Pan,
Activated Float Switch.
02
Outdoor Unit
Activating of Protection Device
(Except Alarm Code 41 and 42)
Activated High Pressure Switch.
Locked Motor in Cooling Operation.
Abnormality of Power Supply Phase
03
Abnormality between Indoor and Outdoor
Incorrect Wiring. Loose Terminals,
Disconnected wire, Tripping of Fuse.
04
Abnormality between Inverter and Control PCB
Failure in Transmission of PCB for Inverter.
05
Supply
Phases
Abnormality of Power Supply Phases
(for 220V/60Hz Unit Only)
Abnormal Waveform of one or more the Supply
Phases (Ex. Distortion of the Voltage Signal).
06
Voltage Drop Voltage Drop by Excessively Low or High
Voltage to Outdoor Unit
Voltage Drop of Power Supply
Insufficient Capacity of Power Supply Wiring.
07
Decrease of Discharge Gas Superheat
Discharge Gas SUPERHEAT less than
10 deg. is maintained for one hour.
08
Increase of Discharge Gas Temperature
Temperature of the top of Compressor: Td
Td > 127
o
C(Cooling), Td > 120
o
C(Heating)
over 10 minutes, or Td > 140
o
C over 5 seconds.
11
Inlet Air Thermistor
12
Outlet Air Thermistor
13
Freeze Protection Thermistor
14
Gas Piping Thermistor
19
Tripping of Protection Device
Activated Internal Thermo of Fan Motor.
20
Compressor Thermistor
22
Outdoor Air Thermistor
24
Evaporating Thermistor
31
Incorrect Capacity of Outdoor and Indoor Unit
Incorrect Setting of Capacity Combination or
Incorrect O.U. Capacity Setting.
35
Incorrect Indoor Unit No. Setting
Duplication of Indoor Unit No.
38
Abnormality of Protective Circuit in outdoor Unit Failure of Protection detecting Circuit
41
Overload cooling
(Possibility of high pressure device activation.)
O.U. Pipe Thermistor Temp. is Higher than 55
o
C
and the Comp. Top Temp. is Higher than 95
o
C
when O.U. Protection Device is activated.
42
Overload heating
(Possibility of high pressure device activation.)
I.U. Freeze Protection Thermistor Temp. is Higher
than 55
o
C and the Comp. Top Temp. is Higher than
95
o
C when O.U. Protection Device is activated.
47
Activation of Low Pressure Decrease
Protection Device
Stoppage by Excessively Decrease of evaporating
Temperature ( Te < -35
o
C) is activated 3 times in
one hour, Locked Motor in Heating Operation.
51
Abnormality of Current Sensor for Inverter
Failure of Control PCB1, IPM or PCB2
52
Overcurrent Protection Activation
Failure of IPM or PCB2, Clogging of Heat Exchanger.
53
Protection Activation of IPM or PCB2
IPM or PCB2 Abnormality
Failure of Compressor, clogging of Heat Exchanger.
54
Inverter Fin Temperature Increase
Abnormal Inverter Fin Thermistor,
Clogging of Heat Exchanger
Abnormal Outdoor Fan
55
IPM or PCB2 Abnormality
Failure of IPM or PCB2
57
Outdoor Fan
Fan Motor Abnormality
Disconnected wire or Incorrect wiring between
Control PCB and Inverter PCB.
Incorrect Wiring or Fan Motor Abnormality
59
Inverter
Thermistor of Inverter Fin Abnormality
(for Inverter Fin Temp.)
Loose Connector, Disconnected Wire,
Short Circuit
b1
Indoor Unit
No. Setting
Incorrect Unit No. Setting
Over 64 I.U. Setting by Ref. No. or I.U. Address.
EE
Compressor
Compressor Protection Alarm
Failure of Compressor.
Inverter
Transmission
Failure of Thermistor, Loose Terminal,
Disconnected Wire.
Locked Motor in Heating Operation.
Sensor on
Outdoor Unit
Pressure
System
Failure of Thermistor, Loose Terminal,
Disconnected Wire.
Cycle
Sensor on
Indoor Unit
