ERROR CODES AND TROUBLESHOOTING
PAGE 40
ENGLISH
Error Codes and Troubleshooting
Yes
Yes
Yes
Yes No
No
No
Yes
No
Recover refrigerant,
remove moisture and
air from system, charge
with fresh refrigerant
to nameplate amount
Check for a fan motor
issue, restricted line
set or EEV, or lack of
refrigerant
Check for a plugged coil or
filter, a high load, or incorrect
refrigerant charge
Replace sensor
The discharge line temperature
is below 230°F/110°C?
The discharge sensor
ohm reading matches the
resistance table in the
Service Manual?
With system on, the
discharge sensor climbs to
230°F within a short time, and
the compressor stops?
With system on, the
discharge sensor climbs to
230°F after several minutes,
and the compressor stops?
Turn power off for 20 min. to
allow the discharge line to cool
Refrigerant static test (system
off for 20 min.) indicates
head pressure converted to
temperature is higher than
ambient?
Error Code
(Indoor/Outdoor)
F4/LED1: 8 Flash
Overheat Protection For Discharge
Temperature
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,
relevant color-coded
test positions, and EEV
resistance values.
