Troubleshooting for BP Unit
SiBE18-821_C
376
Troubleshooting
6. Troubleshooting for BP Unit
6.1
Electronic Expansion Valve Abnormality
Remote
Controller
Display
A9
Method of
Malfunction
Detection
Detection by checking continuity and lack of connector
Malfunction
Decision
Conditions
No voltage applied when turning the power supply on
Supposed
Causes
Broken harness of electronic expansion valve coil
Incorrect connection of connectors for electronic expansion valve coil
Troubleshooting
Keep using as it is.
(Could be external
factor other than
malfunction.)
Replace the electronic
expansion valve coil.
Replace the BP unit
PCB.
NO
NO
YES
YES
(R13012)
Is the
resistance of
the electronic expansion
valve coil normal?
(46 ± 4
Ω
/
20
°
C)
Is malfunction
re-generated?
Correct the
connection.
NO
YES
Is the
electronic
expansion valve coil
connected
properly?
Turn the power supply off
once and then back on.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
