Service manual

ESIEN05-04 Error Codes
Part 3 – Troubleshooting 3–37
4
5
1
3
Troubleshooting
Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
Check the
connections of X20A
and X26A.
Check indoor unit
fan motor and
motor wiring.
Are X20A
and X26A properly
connected?
Is there about 12
VDC?
Connect X20A
and X26A
correctly.
Unplug X26A
and switch the
power supply on.
Check the voltage
between pins 1
and 3 of X26A.
Replace indoor
unit PCB.
No
No
Yes
Yes