TROUBLESHOOTING
48
C 2
O n
H I
b 0
d 4
C 1
b 2
E 4
H I
INTERNAL CONTROL FAULT/NO POWER
NORMAL OPERATION
LOCKOUT DUE TO EXCESSIVE RETRIES
LOW STAGE PRESSURE SWITCH STUCK CLOSED AT START OF HEATING CYCLE
LOW STAGE PRESSURE SWITCH STUCK OPEN
OPEN HIGH LIMIT SWITCH
FLAME DETECTED WHEN NO FLAME SHOULD BE PRESENT
OPEN FUSE
LOW FLAME SIGNAL
IGNITER FAULT OR IMPROPER GROUNDING
HIGH STAGE PRESSURE SWITCH STUCK CLOSED AT START OF HEATING CYCLE
HIGH STAGE PRESSURE SWITCH STUCK OPEN
REVERSED 115 VAC POLARITY
DATA NOT YET ON NETWORK
INVALID MEMORY CARD DATA
BLOWER MOTOR NOT RUNNING
BLOWER COMMUNICATION ERROR
BLOWER HP MIS-MATCH
BLOWER MOTOR OPERATING IN POWER, TEMPERATURE, OR SPEED LIMIT
BLOWER MOTOR CURRENT TRIP OR LOST ROTOR
BLOWER MOTOR LOCKED ROTOR
OVER/UNDER VOLTAGE TRIP OR OVER TEMPERATURE TRIP
INCOMPLETE PARAMETERS SENT TO MOTOR
LOW INDOOR AIRFLOW
LOW STAGE COOL
HIGH STAGE COOL
LOW STAGE GAS HEAT
HIGH STAGE GAS HEAT
CONTINUOUS FAN
CFM/100; ALTERNATES WITH
F
L 0
b 1
b 6
1 2
b 9
L O
b 7
E A
E 8
F
E 3
C 2
b 5
E 6
E 2
E 9
E 1
b 3
b 4
d 0
E 5
E 7
E 0
0140F01169 REV A
LOW STAGE HEAT PUMP HEAT
P 2
C 1
HIGH STAGE HEAT PUMP HEAT
, , ,
,
,
P 1 P 2
AUXILIARY SWITCH OPEN
E F
P 1
PCBKF103 / PCBKF104 / PCBKF105
