Specifications

Troubleshooting for BP Unit SiBE18-821
294 Troubleshooting
6. Troubleshooting for BP Unit
6.1 Malfunction of Electronic Expansion Valve
Remote
Controller
Display
A9
Method of
Malfunction
Detection
Detection by checking continuity and lack of connector.
Malfunction
Decision
Conditions
Malfunction is determined by no common voltage applied when turning the power supply on.
Supposed
Causes

Faulty harness of electronic expansion valve

Incorrect connectors connection of electronic expansion valve
Troubleshooting
Keep using as it is. (Could
be outside error other than
malfunction.)
Correct the connection.
Electronic expansion valve
coil faulty
Replace BP unit PCB of
the applicable part.
(Q0545)
NO
YES
NO
Turn the power supply off once
and then back on.
Is malfunction
re-generated?
YES
YES
Is
the electronic
expansion valve coil
connected to PCB of
the faulty
part?
Is the
resistance of the
electronic expansion
valve coil normal?
(46±4Ω/20˚C)
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.