SERVICING
68
PCBHR101-103
PBBGR101-102
Symptoms of
Abnormal Operation
Diagnostic/Status LED Codes
Fault Description
Possible Causes
Corr
ective
Actions
Notes & Cautions
Green
Yellow
Red
Red Y1
•
Compressor and outdoor fan are off.
•
Low pressure and high pressure switches are closed.
•
Integrated control module diagnostic/status LED’
s
display the indicated code.
OFF
7 Flashes
OFF
ON if call present; OFF if no call
•
Open Run Circuit
•
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 cleared by cycling 24V
AC to control.
•
Replace with correct replacement part(s).
•
Compressor and outdoor fan are off.
•
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’
s
display the indicated code.
OFF
7 Flashes
ON
ON if call present; OFF if no call
•
Open Run Circuit Lockout
•
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
.
•
Must clear fault by cycling 24V
AC
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 fan off).
•
Integrated control module diagnostic/status LED’
s
display the indicated code.
OFF
8 Flashes
OFF
ON if call present; OFF if no call
•
Low
Line
Voltage
•
Low line voltage.
•
Check circuit break
-
ers and fuses.
•
Verify unit is connected to power
supply as specified
on 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 V
AC.
•
Air conditioner/heat pump may appear to be operating normally
.
•
Compressor protector may be open (compressor and
outdoor fan off).
•
Integrated control module diagnostic/status LED’
s
display the indicated code.
ON
8 Flashes
OFF
ON if call present; OFF if no call
•
High
Line
Voltage
•
High line voltage.
•
Correct high line voltage condition; contact local utility if needed.
•
Verify unit is connected to power
supply as specified
on rating plate.
•
Correct low line voltage condition; contact local utility if needed.
•
Turn power OFF prior to repair
.
•
Control detects line voltage greater than
255 V
AC.
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