60
13.5.18 F91 (Refrigeration Cycle Abnormality)
Malfunction Decision Conditions
The input current is low while the compressor is running at higher than the setting frequency.
Malfunction Caused
Lack of gas.
3-way valve close.
Troubleshooting
YES
NO, gas amount is OK
NO, closed
When F91 indication happens
Check 3 way valve
3-way valve opened?
●
Open 3 way valve
YES
●
Check for gas leaking source;
Check for gas leaking source (Refer to H16)
Gas leaking?
Check other parts in refrigeration cycles
Repair or replace defected part(s)
●
Re-claim and then re-charge the
right amount
For safety reason and to prevent
component breakdown, always switch
off the power before remove and
connect the component.
Caution
