Daikin R-410A Service Manual page 199

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