E-
25
ENGLISH
Display
Content
Measure
Product operation status
in case of error
Error type
Outdoor unit compressor/
Outdoor unit fan
Non-connection error
of indoor and outdoor
Communication wire
(connected to the power
terminal)
Check the status of power connection-
Check the connection status of the
communication line
Operation Off
Self Diagnosys
Error
Outdoor fan 1 error
Check the input power connection
statusCheck the connection status
between the motor and PCB in out-
door unit.Check the fuse of indoor/
outdoor units
Operation-off
Self Diagnosys
Error
[inverter] Compressor
operation error
Check the connection status of the
compressorCheck the resistance
between different phases in compres-
sor
Operation-off
Outdoor unit pro-
tection control
error
Discharge current error/
PFC over-current error
Check the input powerCheck refriger-
ant is filledCheck outdoor fan operates
normally
Operation-off
Outdoor unit pro-
tection control
error
[inverter] IPM over cur-
rent error
Check refrigerant is filled; Check the
connection status of compressor and
if it operates normally; Check for any
obstacles around indoor/outdoor units
Operation-off
Outdoor unit pro-
tection control
error
[inverter] Compressor
rotation error
Check the connection status of the
compressor;Check the resistance
between different phases in compres-
sor
Operation-off
Outdoor unit pro-
tection control
error
[inverter] Current sensor
error
Check PCB operates normally
Operation-off
Communication
error
[inverter] DC link voltage
sensor error
Check the connection of input power.
Check the status of RY21 and R2000 of
Inverter PCB
Operation-off
Outdoor unit pro-
tection control
error
[inverter] OTP error
Check PCB operates normally
Operation-off
Outdoor unit pro-
tection control
error
Outdoor fan 2 error
Check the connection status of input
powerCheck the connection status
of motor and outdoor PCB Check the
fuse of indoor/outdoor unit
Operation-off
Self Diagnosys
Error
Gas leakage error
Check refrigerant is filledCheck the
indoor EVA sensor
Operation-off
Self Diagnosys
Error
Inconsistent volume
Check the indoor unit’s option code
Operation-off
Outdoor unit pro-
tection control
error
Troubleshooting
Summary of Contents for UH070CAV1
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