SERVICING
58
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.
H
8
High Line
Voltage
VOLT
08
High line
voltage
Correct high line
voltage condition;
contact local utility
if needed.
Verify unit is
connected to power
on rating plate.
Turn power OFF prior
to repair.
Control detects line
voltage greater than
255 VAC.
Fault will clear if line
voltage decreases
below 255 VAC.
Air conditioner/heat
pump may appear to be
operating normally.
Integrated control
module diagnostic/status
LED display shows the
indicated code.
0
9
Low Pilot
Voltage
LOW
VOLT
09
Control detects
secondary
voltage less
than 18 VAC.
Transformer
overloaded.
Low line voltage.
Check fuse.
Correct low second-
ary voltage condition.
Check transformer;
replace if needed.
Turn power OFF prior to
repair.
Fault will clear if
secondary voltage rises
above 21VAC.
Replace with correct
replacement part(s).
.
Integrated control
module diagnostic/status
LED display shows the
indicated code.
P
0
Comp
Protector
Open
displayed
displayed
through run or
start windings.
Compressor
run winding is
open.
Compressor not
properly wired to
control.
Faulty
compressor
wiring.
Failed
compressor run
capacitor.
Faulty run
capacitor wiring.
Check compressor;
repair/replace as
needed.
Check wiring; repair/
replace as needed.
Check run ca-
pacitor; replace as
needed.
Turn power OFF prior
to repair.
Fault will clear after 1
normal cycle.
Fault may be cleared
by cycling 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.
0
8
VOLTAGE
08
Check circuit
breaker and fuses.
Verify unit is con-
nected to power
on rating plate.
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 1
Digit 2
Digit 3
PCBHR104