AVPTC Service Manual

SERVICING
57
Compressor and outdoor
f
.
Low pressure switch
trip 3 times within same
thermostat demand.
Thermostat demand is
present.
Integrated control
module diagnostic/status
LED display shows the
indicated code.
displays error message.
L1Low Pressure
Cut Out
Lockout
(3 Trips)
LPS 01 Low refrigerant
charge.
Restriction in
liquid line.
Indoor blower
motor failure.
Indoor
thermostat set
extremely low.
Verify refrigerant
charge; adjust as
needed.
Check for
restricted liquid
line; repair/replace
as needed.
Check indoor
blower motor;
repair/replace as
needed.
Check low
pressure switch;
repair/replace as
needed.
Check indoor
thermostat setting.
Turn power OFF prior
to repair.
Must clear fault by
cycling 24VAC to
control.
Replace with correct
replacement part(s).
Four consecutive
compressor protector trips
with average run time
between trips greater than
1 minute and less than 15
minutes.
Low pressure and high
pressure switches are
closed.
Integrated control
module diagnostic/status
LED display shows the
indicated code.
02High Side
Fault
HIGH SIDE
FAULT
02 Blocked
condenser coil.
Outdoor fan not
running.
Check and clean
condenser coil.
Check outdoor
fan motor; repair/
replace as
needed.
Check outdoor
fan motor wiring;
repair/replace as
needed.
Check outdoor
fan motor
capacitor; replace
as needed.
Turn power OFF prior
to repair.
Fault will clear after 4
consecutive normal
cycles.
Fault may be cleared
by cycling 24VAC to
control.
Replace with correct
replacement part(s).
Compressor and outdoor
f
.
Thermostat demand is
present.
Integrated control
module diagnostic/status
LED display shows the
indicated code.
02High
Pressure
Cut Out
Trip
02 Blocked
condenser coil.
Outdoor fan not
running.
Check and clean
condenser coil.
Check outdoor
fan motor; repair/
replace as
needed.
Check outdoor
fan motor wiring;
repair/replace as
needed.
Check outdoor
fan motor
capacitor; replace
as needed.
Turn power OFF prior
to repair.
Replace with correct
replacement part(s).
Compressor and outdoor
f
.
Low pressure switch
trip 3 times within same
thermostat demand.
Thermostat demand is
present.
Integrated control
module diagnostic/status
LED display shows the
indicated code.
displays error message.
L2High
Pressure
Cut Out
Lockout
(3 Trips)
HPS
02 Blocked
condenser coil.
Outdoor fan not
running.
Check and clean
condenser coil.
Check outdoor
fan motor; repair/
replace as
needed.
Check outdoor
fan motor wiring;
repair/replace as
needed.
Check outdoor
fan motor
capacitor; replace
as needed.
Turn power OFF prior
to repair.
Must clear fault by
cycling 24VAC to
control.
Replace with correct
replacement part(s).
Digit 3 Digit 2 Digit 1
PCBHR104