INDUCED DRAFT
MOTOR STARTS
BLOWER PREPURGE
8 SECONDS
SET THERMOSTAT TO
CALL FOR HEAT
GREEN LED ON
YELLOW LED ON
CHECK THE FOLLOWING:
WIRE CONNECTIONS.
LINE VOLTAGE POWER.
24 VAC ON TRANSFORMER
SECONDARY. REPLACE IF DEFECTIVE.
REPLACE GREEN LED IF DEFECTIVE.
REPLACE BLOWER COVER SAFETY
SWITCH IF DEFECTIVE (LP MODELS ONLY).
CHECK FOR 24 VAC FROM "N.O." ON
THERMOSTAT BOARD TO GROUND.
CHECK THE FOLLOWING:
WIRING CONNECTIONS
SENSOR RESISTANCE (SEE CHART PAGE 21)
THERMOSTAT DIAL RESISTANCE
IF OK, REPLACE THERMOSTAT
BOARD
CHECK FOR 24 VAC FROM " TH" ON
IGNITER BOARD TO GROUND.
CHECK FOR 115 VAC TO MOTOR.
REPLACE MOTOR
CHECK WIRING. IF OK, REPLACE
IGNITER CONTROL UNIT.
CHECK WIRING. IF OK,
REPLACE YELLOW LED
CHECK FOR 115 VAC AT IGNITER
TERMINALS.
REPLACE IGNITER
CHECK WIRING. IF OK, REPLACE
IGNITER CONTROL UNIT.
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
NO
SYSTEM WILL ATTEMPT IGNITION 3 TIMES
AND LOCK OUT. GREEN AND YELLOW LEDS
WILL BE ACTIVATED. DISCONNECT POWER TO
RESET AFTER LOCKOUT. VOLTAGE IS PRESENT
AT THE GAS VALVE FOR ONLY 4 SECONDS
DURING EACH IGNITION TRIAL. RED LED WILL
BE ACTIVATED FOR ONLY 4 SECONDS DURING
EACH IGNITION TRIAL.
RED LED ON
YES
NO
24 VAC ACROSS THE VALVE RELAY.
YES
GAS VALVE SELECTOR ARM IN THE "ON" POSITION.
CORRECT GAS FLOW TO VALVE
CORRECT GAS REGULATOR PRESSURE.
NO OBSTRUCTIONS IN AIR INLET OR VENT OUTLET.
BALANCE LINE CORRECTLY INSTALLED.
YES
REPLACE GAS VALVE
24 VAC AT "VAL" ON IGNITION
CONTROL BOARD
YES
CHECK WIRING. IF OK
REPLACE RED LED
NO
WATER TEMPERATURE
GREATER THAN 180 F.
YES
DECREASE WATER TEMP.
DETERMINE CAUSE
NO
CHECK WIRING. IF
OK, REPLACE ECO
NO
CHECK WIRING. IF OK, REPLACE
IGNITER CONTROL UNIT.
YES
NO
NOTE: IF IGNITION CONTROL BOARD GOES
INTO LOCKOUT, RESET SYSTEM.
CHECK THE FOLLOWING:
POLARITY OF 115 VAC SUPPLY.
GROUND WIRE CONTINUITY.
DEFECTIVE IGNITER.
IF OK, REPLACE IGNITION CONTROL BOARD.
MAIN BURNER REMAINS LIT
UNTIL CALL FOR HEAT ENDS.
YES
TROUBLESHOOTING ENDS
IGNITER WARM-UP
35 SECONDS
MAIN BURNER
LIGHTS
CHECK WIRING.
TROUBLESHOOTING GUIDE POLARIS ELECTRONIC CONTROL BOARD
27
UTEC Status Indicator LED Error Conditions:
Flashing 1 Time - Control is in lock-out because the inducer pressure switch is
stuck closed.
Flashing 2 Times - Control is in lock-out because the pressure switch did not close.
Flashing 3 Times - Control board is in lock-out due to a failed ignition lock-out.
Flashing 4 Times - Control board is in lock-out due to a hardware fault (gas valve sense).
Flashing 5 Times - Control board is in lock-out due to a hardware fault (flame sense).
Flashing 6 Times - Control board is in lock-out due to a false or undesired flame sensed.
An L1 Polarity fault remains a fast flashing code.
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