Daikin J Series Service Manual Page 227

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Troubleshooting - Outdoor Unit Related SiE18-201
216 Service Diagnosis
3.3.5 Malfunction of Electronic Expansion Valve
Outdoor Unit
Indication
E9
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 electronic expansion valve
Faulty harness of electronic expansion valve
Incorrect connectors connection of electronic expansion valve
Outside cause (noise, etc.)
Troubleshooting
Note: The applicable part of motorized valve is displayed via rotary switch [01].
Turn the power supply off once
and then back on.
Keep using as it is. (Could
be outside error other than
malfunction.)
Correct the connection.
Electronic expansion valve
faulty
Replace control PC board
of the applicable part.
Is malfunction
re-generated?
Is the
resistance of the
electronic expansion
valve coil normal?
(48)
(MF024)
NO
YES
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
YES
YES
Is the
electronic
expansion valve coil
connected to PC board
of the faulty
part?
NO
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