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Troubleshooting
Start
See reverse side for
wiring diagram and
relevant color-coded
test positions.
No
●
No
Yes
Momentary loss
of building power
or acceptable
power quality
Replace
compressor
Replace compressor
●
Replace IPM
Repair or
replace wiring or
connections
min. and turned back on,
the compressor runs?
A windings or grounding
check shows issues with
compressor?
There is 50-200 VAC
across the U, V, and W
solder points on the IPM?
The compressor wires are
on the correct terminals,
free of breaks and the
connections at both end
are secure?
There is substantially more than
5 VDC or 15 VDC pulsing at CN23
(MODULE COM) on the PCB?
Yes
Yes
Yes
Yes
No
No
Error Code (Indoor/Outdoor)
F11/LED1: 18 Flash
Complete the “Check This First” Flow
Chart before continuing.
Models:
AW09EH2VHD/ASYW09URDWD
AW12EH2VHD/ASYW12URDWD
AW18EH2VHD/ASYW18URDWD
1U09EH2VHE/ASH109URDSE
1U12EH2VHE/ASH112URDSE
1U18EH2VHE/ASH118URDSE
ERROR CODES and Troubleshooting
PAGE 91
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