M thermal Mono
202004 71
Procedure
Power supply voltage is not within ±10%
of rated voltage or a (on 3-phase models)
phase is missing
Provide normal power supply
Wires between refrigerant system main
PCB, AC filter board (on 3-phase models)
and electric control box power supply
terminals are loose
Ensure the wires are connected properly
Outdoor unit powered on immediately
after being powered off
Power-off the unit and wait for at least 3
minutes before powering-on
High voltage circuit error has occurred,
such as the compressor has
malfunctioned, the fan motor has
short-circuited, or the inverter module
has short-circuited
Replace or repair the relevant parts
Replace refrigerant system main PCB
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