Troubleshooting
4-23
Wired remote controller (cont.)
Error mode Contents Measure
Product operation in
error condition
Error type
Outdoor unit/
Compressor/
Indoor unit
[Inverter] Compressor
startup error
Check the compressor connection status.
Check the resistance between difference phases of
the compressor.
Operation Off
Outdoor unit
protection
control error
[Inverter] Total current error/
PFC over current error
Check the input power
Check the coolant charging status
Check the normal operation of outdoor fan
Operation Off
Outdoor unit
protection
control error
OLP Overheat and Comp.
Stop
Reconfirm the opening of the service valve.
Check for leaks from the connection part of the pipe
and product or from the pipe joint.
Change the outdoor unit location and direction.
Refill the coolant after checking the leaking part.
Reinstall the outdoor unit set.
Operation Off
Outdoor unit
protection
control error
[Inverter] IPM over current
error
Check coolant charging
Check the compressor connection status and normal
operation
Check the obstacles around the indoor and outdoor
units
Check whether the outdoor unit service valve is open
Check whether the indoor/outdoor installation pipe/
wiring are correct
Operation Off
Outdoor unit
protection
control error
Compressor V limit error
Check the compressor connection status
Check the resistance between difference phases of
the compressor
Operation Off
Outdoor unit
protection
control error
DC LINK over/low voltage
error
Check input power
Check AC power connection
Restart in 3 minutes
Outdoor unit
protection
control error
[Inverter] Compressor
rotation error
Check the compressor connection status
Check the resistance between difference phases of
the compressor
Operation Off
Outdoor unit
protection
control error
[Inverter] Current sensor
error
Check EEPROM DATA
Check the normal operation of PCB
Operation Off
Outdoor unit
protection
control error
[Inverter] DC LINK voltage
sensor error
Check the input power connection
Check the status of RY21 and R200 in the INVERTER
PCB
Operation Off
Outdoor unit
protection
control error
EEPROM Read/Write error - Operation Off
Outdoor unit
protection
control error
[Inverter] OTP error
Check EEPROM DATA
Check the normal operation of PCB
Operation Off
Outdoor unit
protection
control error
AC ZERO CROSSING SIGNAL
OUT error
Check the input power status Operation Off
Outdoor unit
protection
control error
Compressor LOCK error
Check the compressor connection status
Check the resistance between difference phases of
the compressor
Operation Off
Outdoor unit
protection
control error
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