
P5417009-rev.6
79
Table 9.2 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, Inert Gas
Mixing)
03
Communication
Abnormal Communication between
Indoor Units and Outdoor Units
Incorrect Wiring, Loose Terminals, Disconnected Communication
Cable, Blowout of Fuse, Indoor Unit Power OFF
04
Abnormal Communication between
Inverter PCB and Outdoor PCB
Inverter PCB -Outdoor PCB Communication Failure
(Loose Connector, Wire Breaking, Blowout of Fuse)
05
Supply Phase Abnormality of Power Supply Phases
Incorrect Power Supply, Connection to Reversed Phase,
Open-Phase
06
Voltage
Abnormal Inverter Voltage
Outdoor Voltage Decrease, Insufficient Power Capacity
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
Increase in Discharge Gas Temperature
Insufficient Refrigerant Charge, Pipe Clogging, Failure of Thermistor,
Incorrect Wiring, Incorrect Piping Connection, Expansion Valve
Locking at Closed Position (Disconnect Connector)
0A
Communication Abnormal Communication between
Outdoor Units
Incorrect Wiring, Breaking Wire, Loose Terminals
0b
Outdoor Unit
Incorrect Outdoor Unit Address Setting
Duplication of Address Setting for Outdoor Units (Sub Units) in
Same Refrigerant Cycle Number
0C
Incorrect Outdoor Unit Main Unit Setting
Two (or more) Outdoor Units Set as "Main Unit" Exist in Same
Refrigerant Cycle Number
11
Sensor on
Indoor Unit
Abnormality of Inlet Air Thermistor
Incorrect Wiring, Disconnecting Wiring,
Breaking Wire, Short Circuit
12
Abnormality of Outlet Air Thermistor
13
Abnormality of Freeze Protection
Thermistor
14
Abnormality of Gas Piping Thermistor
15
Abnormality of Outdoor Air Thermistor
(EconoFresh)
16
Abnormality of Remote Sensor (DOAS)
17
Abnormality of Thermistor Built-in
Remote Controller (DOAS)
18
Indoor Fan
Motor
Abnormality of Indoor Fan System
Abnormality of Indoor Fan Motor (Step-Out),
Indoor Fan Controller Failure
19
Activation of Protection Device for
Indoor Fan
Fan Motor Overheat, Lockup
1A
Indoor Fan
Controller
Abnormality of Fan Controller Fin
Temperature
Abnormality of Fin Thermistor or Fan Controller,
Heat Exchanger Clogging, Abnormality of Fan Motor
1b
Activation of Overcurrent Protection
Abnormality of Fan Motor
1C
Problem with Current Sensor
Abnormality of Fan Controller Current Sensor
1d
Activation Fan Controller Protection
Driver IC Error Signal Detection, Instantaneous Overcurrent
1E
Abnormality of Indoor Fan Controller
Voltage
Indoor Voltage Decrease, Insufficient Capacity of
Power Supply Wiring
21
Sensor on
Outdoor Unit
Abnormality of High Pressure Sensor
Incorrect Wiring, Disconnecting Wiring,
Breaking Wire, Short Circuit
22
Abnormality of Outdoor Air Thermistor
23
Abnormality of Discharge Gas Thermistor
on Top of Compressor
24
Abnormality of Heat Exchanger
Liquid Pipe Thermistor
25
Abnormality of Heat Exchanger
Gas Pipe Thermistor
29
Abnormality of Low Pressure Sensor
Содержание YVAHR072B32S
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