Service Call Q & A - Hitachi RAC-70YH7 Service Manual

SERVICE CALL Q & A
COOLING MODE
Q1
The compressor has stopped
suddenly during cooling
operation.
DEHUMIDIFYING MODE
Q1
Q2
Q3
Q4
HEATING MODE
Q1
Q2
Q3
A1
Check if indoor heat
exchanger is frosted.
Wait for 3-4 minutes
until it is defrosted.
A1
A2
A3
A4
A1
A2
A3
– 74 –
If the air conditioner operates
in cooling mode when it is cold,
the evaporator may get frosted.