ERROR CODES AND TROUBLESHOOTING
PAGE 47
ENGLISH
Error Codes and Troubleshooting
No
No
Yes
Momentary loss
of building power
or acceptable
power quality
Replace
compressor
Replace compressor
Replace
IPM
Repair or
replace wiring or
connections
When power is off for 5
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 on the PCB?
Yes
Yes
Yes
Yes
No
No
Error Code
(Indoor/Outdoor)
F11/LED1: 18 Flash
Loss of Compressor Synchronization
Complete the “Check This First” Flow
Chart before continuing.
Models:
AW24TL2HFA
AW30TL2HFA
AW36TL2HFA
ASYW24TRDFA
ASYW30TRDFA
ASYW36TRDFA
1U24TL2HFA
1U3036TL2HFA
ASH124TRDFA
ASH3036TRDFA
Start
See following page
for wiring diagram and
relevant color-coded
test positions.
