Start Failure Malfunction; Energize And Start The Unit - York DHM42CMB21S Service Manual

(6) Start failure malfunction

Main checking points:
If the connection wire of the compressor is connected properly.
I f the stop duration of the compressor is sufficient.
I f the compressor is broken.
;If the refrigerant charging amount is too much.
Flow chart:
The stop duration of the unit is
not enough, the high and low
pressure of the system is not
balanced,restart it after 3 min
28
Energize and
start the unit
no
If the stop duration of the compressor
is longer than 3min
If the connection wire of the compressor
is connected well and correctly
no
If the refrigerant charging
amount is too much
Charge the refrigerant
according to the
service manual
Eliminate the malfunction
Replace the outdoor
mainboard
Eliminate the malfunction
Replace the compressor
yes
yes
yes
yes
no
yes
no
End
Reconnect the connection wire
no
of the compressor according
to the wiring diagram
no
Eliminate the malfunction
yes