Schwank supraSchwank - Manual (Page 25)

supra/primo Manual
IM091112
RD: APR 2013
RL: 13B
25
IS THERE VOLTAGE FROM IGNITION
CONTROL TO COMBINATION GAS
VALVE? → CHECK ELECTRICAL WIRES FROM IGNITION
CONTROL TO COMBINATION GAS VALVE
→ CHECK IGNITION CONTROL, REPLACE IF
NECESSARY
NO
IS GAS COMING THROUGH
ORIFICE ON THE HEATER?
YES
→ ENSURE ALL GAS VALVES ARE OPEN
NO
YES
DOES THE IGNITION CONTROL
TERMINATE THE SPARKING
PROCESS AFTER THE HEATER IS
OPERATING?
→ CHECK SPARK IGNITER FOR CRACKS,
REPLACE SPARK IGNITER IF NECESSARY
→ENSURE THE SENSING WIRE IS SECURELY
CONNECTED TO THE SENSING PROBE
→CLEAN THE SENSING PROBE ON THE SPARK
IGNITER
→ENSURE THE FLAME SENSOR IS WITHIN 1/4"
ABOVE THE CERAMIC TILE
→CHECK FLAME SIGNAL WITH METER, IF LOW
CHANGE
SENSOR
→REPLACE WITH NEW IGNITION CONTROL
UNIT IF OTHER CHECKS ARE OK
DOES HEATER SHUT DOWN
AFTER IGNITION CEASES?
→CHECK FLAME SIGNAL USING A METER
INSTALLED IN SERIES WITH SENSOR CABLE,
CHECK (MICROAMPS) STRENGTH OF SIGNAL
FOR 1.5uA MINIMUM
YES
YES
NO
NO
STILL HAVING TROUBLE
OPERATING THE HEATER?
→REPEAT THE ABOVE TROUBLE SHOOTING
PROCEDURES
→IF THE PROBLEM PERSISTS, CONTACT YOUR
SCHWANK DISTRIBUTOR.
YES
NO
TROUBLESHOOTING
COMPLETE
→IF SIGNAL IS LOW REPLACE SENSOR AND
WIRE