67
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Diagram 3:
Main test points:
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The electronic terminals
expansion FA in good condition
After power cut
for 20 mins
Overload protector
SAT is connected.
Use ohmmeter measuring the
overload protector resistance at ambient temp.
<
1000 Ω resistance
Check the electronic expansion
valve coil is installed on the
valve body correctly
Change overload
protector SAT
Check the electronic expansion
valve body is block or not.
The fault is clear.
Check the refrigerant situation, please
add refrigerant according to the technical
specification when leakage happened.
The fault is clear.
Check the
exhaust temp sensor is normal
by the resistance table
Change the outdoor
control board
End
Change the exhaust
temperature
sensor
Good reference
circuit diagram
line connected