Check Of The Outdoor Refrigerant Circuit - Mitsubishi Electric MUZ-AP25VG - E1 Service Manual

N Check of the outdoor refrigerant circuit
Has the operation stopped
during pump down?
Yes
The operation has stopped to pre-
vent the diesel explosion caused by
air trapped in the refrigerant circuit.
Close the stop valve, and disconnect
the power plug or turn the breaker
OFF.
CAUTION : Do not start the operation again to prevent hazards.
OBH789
Was the operation started with
the stop valve closed, and was
No
it opened during operation?
No
The refrigerant gas amount may be
60% or less than the normal amount.
Identify where the gas is leaking from,
and fi x the leak.
48
The unit occasionally stops when the
stop valve is opened or closed during
operation. Open the stop valve and
Yes
start the cooling operation again.