65
SERVICING
PCBHR104
Air conditioner/heat
pump may appear to be
operating nor mally.
Compressor protector
may be open (compressor
and outdoor f
Integrated control
module diagnostic/status
LED displ ay sho ws the
indicated code .
H
8
High Line
Voltage
VO LT
08
High line
voltage
Correct high line
voltage condition;
contact local utility
if needed.
Ve rify unit is
connected to po wer
on rating plate .
Turn power OFF pr ior
to repai r.
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 nor mally.
Integrated control
module diagnostic/status
LED displ ay sho ws the
indicated code .
0
9
Low Pilot
Voltage
LO W
VO LT
09
Control detects
secondar y
voltage less
than 18 VAC.
Transf ormer
overloaded.
Low line voltage.
Chec k fuse .
Correct lo w second -
ary voltage condition.
Chec k transf ormer;
replace if needed.
Turn power OFF pr ior to
repair.
Fault will clear if
secondar y voltage r ises
above 21V AC.
Replace with correct
replacement par t(s).
.
Integrated control
module diagnostic/status
LED displ ay sho ws the
indicated code .
P
0
Comp
Protector
Open
displayed displayed through run or
star t windings.
Compressor
run winding is
open.
Compressor not
properly wired to
control.
Faulty
compressor
wiring.
Failed
compressor r un
capacito r.
Faulty r un
capacitor wi ring.
Chec k compressor ;
repair/replace as
needed.
Chec k wiring; repair/
replace as needed.
Chec k run ca -
pacitor; replace as
needed.
Turn power OFF pr ior
to repai r.
Fault will clear after 1
normal cycle .
Fault ma y be cleared
by cycling 24V AC to
control.
Replace with correct
replacement par t(s).
Air conditioner/heat
pump may appear to be
operating nor mally.
Compressor protector
may be open (compressor
and outdoor f
Integrated control
module diagnostic/status
LED displ ay sho ws the
indicated code .
0
8
VO LTAG E
08
Chec k circuit
break er and fuses .
Ve rify unit is con -
nected to po wer
on rating plate .
Turn power OFF pr ior
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
