Service manual

SERVICING
93
Compressor and outdoor
f .
Low pressure and high
pressure switches are
closed.
Open start circuit has been
detected 4 times with 5
minute delay between each
detection.
Integrated control
module diagnostic/status
LED display shows the
indicated code.
displays error message.
L6Open Start
Circuit
Lockout
START
06 Compressor start
winding is open.
Failed
compressor run
capacitor.
Faulty run
capacitor wiring.
Compressor not
properly wired
to control.
Faulty
compressor
wiring.
Check
compressor;
repair/replace as
needed.
Check run
capacitor; replace
as needed.
Check wiring
repair/replaced
as needed.
Turn power OFF prior
to repair
Must clear fault by
cycling 24VAC to
control.
Replace with correct
replacement part(s).
Compressor and outdoor
f
.
Low pressure and high
pressure switches are
closed.
Integrated control
module diagnostic/status
LED display shows the
indicated code.
displays error message.
07Open Run
Circuit
07 Compressor run
winding is open.
Compressor not
properly wired
to control.
Faulty
compressor
wiring.
Check
compressor;
repair/replace as
needed.
Check wiring;
repair/replace as
needed.
Turn power OFF prior
to repair.
Fault will clear after 1
normal cycle.
Fault may be cycling
24VAC to control.
Replace with correct
replacement part(s).
Compressor and outdoor
f .
Low pressure and high
pressure switches are
closed.
Open run circuit has been
detected 4 times with 5
minute delay between
each detection.
Integrated control
module diagnostic/status
LED display shows the
indicated code.
displays error message.
L7Open Run
Circuit
Lockout
07 Compressor run
winding is open.
Compressor not
properly wired
to control.
Faulty
compressor
wiring.
Check compres-
sor; repair/re-
place as needed.
Check wiring;
repair/replace as
needed.
Turn power OFF prior
to repair.
Must clear fault by cy-
cling 24VAC to control.
Replace with correct
replacement part(s).
Air conditioner/heat
pump may appear to be
operating normally.
Compressor protector may
be open (compressor and
outdoor f
Integrated control
module diagnostic/status
LED display shows the
indicated code.
L8Low Line
Voltage
VOLT
08
Low line voltage. Check circuit
breakers and
fuses.
Verify unit is
connected to
power supply
rating plate.
Correct low line
voltage condition;
contact local
utility if needed.
Turn power OFF prior
to repair.
Control detects line
voltage less than
185 VAC.
Fault will clear if line
voltage increases
above 185 VAC.
Digit 3 Digit 2 Digit 1
PCBHR104