Service manual

ESIE03–01 Error Codes: Outdoor Units
Part 3 – Troubleshooting 3–51
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Troubleshooting To troubleshoot, proceed as follows:
Caution Be sure to turn off power switch before connecting or disconnecting the connector, or parts damage
may occur.
Turn the power supply off and
back on again
NoNormal reset?
Check resistance of
electronic expansion
valve coil.
Faulty electronic
expansion valve.
Outside cause
(electric noise,
etc.).
Yes
No
Replace outdoor
unit PCB.
Yes
Did you
measure the
resistance over a grey
wire?
Faulty electronic
expansion valve.
No
Yes
Replace outdoor
unit PCB.
Yes
No
Is the electronic
expansion valve
connected to the outdoor
unit PCB?
Yes
Connect correctly.No