Toshiba RUAGP Series Original Owner's Manual page 85

Error code causes and solutions. – part 4
Error code
(Hexadecimal)
A1 COMP detct crcit err
A2 COMP Crnt snsr err
A3 COMP Mortor Lock
A4 COMP Breakdown
A5 COMP Other error
AC Heatsink overheat
AD Heatsink sensor err
AF COMP IPDU comm error
B0 COMP abnormal volt
B1 COMP IPDU board err
Description
PWM board error
The power supply's voltage or frequency is outside the
specified working range.
Open circuit condition or loose connection in control
wiring.
PWM board error
Open circuit condition or loose connection in control
wiring.
Compressor error
Miswiring and wiring disconnection of PWM board
Incorrect wiring or disconnection of compressor terminal Repair wiring.
The power supply's voltage or frequency is outside the
specified working range.
Open circuit condition or loose connection in control
wiring.
Overload
Compressor error
PWM board error
The power supply's voltage or frequency is outside the
specified working range.
Open circuit condition or loose connection in control
wiring.
Load fluctuations are too large
Cooling fan error
A power outage occurred
Overload
Compressor error
IPDU board error
The power supply's voltage or frequency is outside the
specified working range.
Open circuit condition or loose connection in control
wiring.
A power outage occurred
Overload
Cooling fan error
Open circuit condition or loose connection in control
wiring.
Heat sink sensor error value
PWM board error
Temperature sensor error
PWM board error
Open circuit condition or loose connection in control
wiring.
Open circuit condition or loose connection in
communication line wiring.
Failure of communication port on EEV board
PWM board error
Blown 16A fuse (400 V specification only)
Power rectifier error
Open circuit condition in wiring
The power supply's voltage or frequency is outside the
specified working range.
PWM board error
Open circuit condition or loose connection in control
wiring.
A power outage occurred
Circuit breaker has tripped
Rectifier for compressor error
Blown fuse (400 V specification only)
Magnet switch breakdown
The power supply's voltage or frequency is outside the
specified working range.
PWM board error
Open circuit condition or loose connection in control
wiring.
Cause
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Required action
Replace PWM board
Operate the unit within the specified working range.
Repair the control wiring.
Replace PWM board
Repair the control wiring.
Replace compressor.
Repair wiring.
Operate the unit within the specified working range.
Repair the control wiring.
Improve working conditions to reduce the load.
Replace compressor.
Replace PWM board
Operate the unit within the specified working range.
Repair the control wiring.
Reduce fluctuations
Replace cooling fan.
Repair the power supply
Improve working conditions to reduce the load.
Replace compressor.
Replace IPDU board
Operate the unit within the specified working range.
Repair the control wiring.
Repair the power supply.
Improve working conditions to reduce the load.
Replace cooling fan.
Repair the control wiring.
Repair wiring / change sensor.
Replace PWM board
Replace temperature sensor.
Replace PWM board
Repair the control wiring.
Repair communication line.
Replace EEV board
Replace PWM board
Rectify fault and replace 16A fuse.
Replace rectifier.
Repair wiring.
Operate the unit within the specified working range.
Replace PWM board.
Repair the control wiring.
Repair the power supply.
Rectify fault and switch breaker back on.
Replace rectifier.
Rectify fault and replace fuse.
Replace magnet switch and repair wiring.
Operate the unit within the specified working range.
Replace PWM board.
Repair the control wiring.