Table 11 - LED Status Codes
Green "POWER" Module has power Supply voltage is present at module terminals
Red "TRIP" LED On Solid Thermostat demand signal 1. Compressor protector is open
Y is present, but the
2. Condensing unit power disconnect is open
compressor is not running.
3. Compressor circuit breaker or fuse(s) is open
4. Broken supply wires or connector is not making contact
5. Compressor power wires not routed through Comfort Alert
6. Compressor contactor has failed open
Red "TRIP" LED Flashing The anti-short cycle timer (3 minutes), in module is preventing compressor restart.
Yellow "ALERT" LED On Solid A short circuit or over 1.
current condition exists on
2.
PROT terminal.
3.
Yellow "ALERT" Flash Code 2 1.
Yellow "ALERT" Flash Code 3
Yellow "ALERT" Flash Code 4
Yellow "ALERT" Flash Code 5
Yellow "ALERT" Flash Code 6
System Pressure Trip
Discharge pressure out of
limits or compressor over-
load (if no high pressure
switch in system)
LOCKOUT
Short Cycling
Compressor is running only
briefly LOCKOUT
Locked Rotor
LOCKOUT
Open Circuit
Missing Phase
LOCKOUT
Yellow "ALERT" Flash Code 7 Reverse Phase LOCKOUT
Yellow "ALERT" Flash Code 8 Welded Contactor
Compressor always runs
Yellow "ALERT" Flash Code 9 Low Voltage
Control circuit < 18VAC
Compressor contactor coil shorted
Electrical load too high for PROT circuit (maximum 1 Amp)
24 V AC wired directly to PROT terminal
High head pressure
2. Condenser coil poor air circulation (dirty, blocked, damaged)
3. Condenser fan is not running
4. If low pressure switch is open:
Refer to Code 3 for troubleshooting
1. If low pressure switch is open:
a. Low refrigerant charge
b. Evaporator blower is not running
c. Evaporator coil is frozen
d. Faulty metering device
e. Condenser coil is dirty
f. Liquid line restriction (filter drier blocked if present)
2. If high pressure switch is open, go to Flash Code 2
information
3. Intermittent thermostat demand signal
4. System or control board defective
1. Low line voltage to compressor
2. Excessive liquid refrigerant in compressor
3. Compressor bearings are seized
1. Condensing unit power disconnect is open
2. Compressor circuit breaker or fuses are open
3. Compressor contactor has failed open
4. High pressure switch is open and requires manual reset
5. Broken supply wires or connector is not making contact
6. Unusually long compressor protector reset time due to
extreme ambient temperature
7. Compressor windings are damaged
1. Compressor fuse is open on one phase
2. Broken wire or connector on one phase
3. Compressor motor winding is damaged
4. Utility supply has dropped one phase
1. Compressor running backward due to supply phase reversal
1. Compressor contactor has failed closed
2. Thermostat demand signal not connected to module
1. Control circuit transformer is overloaded
2. Low line voltage to compressor
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