Mitsubishi Electric Mr.SLIM SUZ-M25VAR1.TH Technical & Service Manual page 39

Check of outdoor refrigerant circuit
L
Has the operation stopped
during pump down?
No
Was the operation started with
the stop valve closed, and was
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 fix the leak.
OCH684C
CAUTION:
Do not start the operation again to
Yes
prevent hazards.
The operation has stopped to
prevent 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.
The unit occasionally stops when the
stop valve is opened or closed during
Yes
operation. Open the stop valve and
start the cooling operation again.
Note: If the abnormality cannot be reset with remote controllers, it is
detected in the connected indoor unit. Please refer to the indoor
unit's service manual.
39