GSX14 Service Manual

SERVICING
86
Diagnostic/Status LED Codes
Com f or tNe t ™
Thermostat Only
Symptoms of Abnormal Operation
(Legacy & ComfortNet™ Thermostat)
Green Ye ll ow Red Red Y1
Fault
Description
Message Code
Possible Causes
Corrective Actions Notes & Cautions
• Compressor and outdoo r fan are off. • Low pressure and high pressure
switches are closed.
• Integrated control module
diagnostic/status LED’s display the indicated code.
• ComfortNet™ thermostat “Call for
Service” icon illuminated.
• ComfortNet™ ther mostat scrolls
“Check Air Conditioner” or “Check Heat Pump” message.
OFF 7
Fl a sh es
OFF ON if call
present;
OFF if no
call
• Open Run
Circuit
OPEN RUN 07 • Compressor run winding is
open.
• Compressor not properly
wired to control.
• Fau lty 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 24VAC to cont rol.
• Replace with correct
replacement part(s).
• Compressor and outdoo r 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 detecti on.
• Integrated control module
diagnostic/status LED’s display the indicated code.
• ComfortNet™ thermostat “Call for
Service” icon illuminated.
• ComfortNet™ ther mostat scrolls
“Check Air Conditioner” or “Check Heat Pump” message.
OFF 7
Fl a sh es
ON ON if call
present;
OFF if no
call
• Open Run
Circuit Lockout
OPEN RUN
LOCK
07 • Compressor run winding is
open.
• Compressor not properly
wired to control.
• Fau lty 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 24VAC to cont rol.
• 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
Fl a sh es
OFF ON if call
present;
OFF if no
call
• Low Line
Voltage
LOW LINE
VOLT
08 • Low line voltage. • Check circuit breakers
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 VAC .
• 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
Fl a sh es
OFF ON if call
present;
OFF if no
call
• High Line
Voltage
HIGH LINE
VOLT
08
• High line voltage. • Correct high li ne
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 VAC .