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25.2.42 Outdoor Current Transformer Open Circuit (H16 / H03 / F46)
Malfunction Decision Conditions
An input current, detected by Current Transformer CT, is below threshold value when the compressor is
operating at certain frequency value for 3 minutes.
Malfunction Caused
Lack of gas
Broken CT (current transformer)
Broken Outdoor PCB
Troubleshooting
When abnormality indication starts again
Refer to Service Manual Technical Graph
for Temp vs Current and Pressure
In forced cooling, check suction ressure
versus running current
Running current and suction pressure is
very low
●
Compressor Lack Compression
●
Replace Compressor
●
Check & replace defected CT
Running current is much too low and
suction pressure is much too high
Suction pressure and running current is
normal
●
Check for gas leaking source; Repair
or replace defected part(s)
●
Capillary tube/expansion valve
blockage; Replace defected part(s)
For safety reason and to
prevent component
breakdown, always switch off
the power before remove and
connect the component.
Caution
