Schwank sportSchwank - Manual (Page 20)

sportSchwank Manual
IM080731
RD: July 2008
RL: 01A
BA
16. TROUBLESHOOTING GUIDE
TURN HEATER ON :
24 VOLTS INTO DSI CONTROL
24 VOLTS OUT FROM DSI CONTROL
24 VOLTS AT GAS CONTROL
SPARK ACROSS IGNITER.
IS HIGH VOLTAGE SPARK
OK ?
ENSURE THE MANUAL KNOB
ON THE VALVE IS OPEN AND
THAT THERE IS GAS SUP-
PLY TO THE VALVE.
*CHECK 120 V AT PRIMARY TRANSFORMER
*CHECK VOLTAGE OUT AT SECONDARY.
*IF THERE IS NOT 24V TO SECONDARY....
.......REPLACE THE TRANSFORMER
*ENSURE GAS IS TURNED ON AT
VALVE.*CHECK ELECTRICAL CONNECTIONS
AT
CONTROL & GAS VALVE.
*CHECK 24V WIRING CONTINUITY FROM DSI
IGNITION CONTROL TO GAS VALVE, RE
*PERFORM IGNITION LEAD TEST DESCRIBED
IN “SPARK IGNITION CIRCUIT”.
*CHECK DSI MODULE IGNITION POST FOR
DEFECTS.
*SPARK IGNITER MAY BE OUT OF POSITION.
*CHECK BOOT OF THE IGNITION CABLE FOR
SIGNS OF MELTING OR BUCKLING. TAKE
PROTECTIVE ACTION TO SHIELD CABLE &
BOOT FROM EXCESSIVE TEMPERATURES.
*CHECK CERAMIC INSULATOR FOR CRACKS *
*CHECK SPARK GAP, 1/8”-3/16” .
*CHECK IGNITION CABLE, AND GROUND
WIRE,
*CHECK 24V WIRING FROM TRANSFORMER
TO IGNITION CONTROL / AND CHECK IF
CORRECT GAUGE OF WIRE FOR DISTANCE.
*REPLACE WIRES IF NECESSARY.
*sportSchwank 30 ONLY: CHECK THAT GAS
SUPPLY PRESSURE EXCEEDS 4.5” W.C. TO
CLOSE LOW GAS PRESSURE SWITCH …..
REMEDY GAS PRESSURE OR REPLACE
SWITCH IF DEFECTIVE
*CHECK FOR 24 VAC ACROSS GAS VALVE
TERMINALS ON CONTROL. IF NO VOLTAGE,
.........REPLACE CONTROL.
YES NO
NO
YES
YES
YES
YES
YES
NO
NO
NO
IF 24V IS PRESENT AND VALVE DOES NOT
OPEN.......REPLACE VALVE GAS VALVE OPENS.
NO
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YES
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