Troubleshooting Guide - Schwank 2300 Series Installation & Owner's Manual

13. TROUBLESHOOTING GUIDE

TURN HEATER ON :
(AT PATIO CONTROL PANEL IF INSTALLED)
YES
24 VOLTS INTO DSI CONTROL
YES
24 VOLTS OUT FROM CONTROL
YES
24 VOLTS AT GAS CONTROL
YES
GAS VALVE OPENS.
YES
SPARK ACROSS IGNITER.
IS HIGH VOLTAGE SPARK
OK ?
YES
MAKE SURE THE MANUAL
LEVER ON THE GAS
VALVE IS OPEN AND THAT
THERE IS GAS SUPPLY TO
THE VALVE.
*CHECK 120 V AT PRIMARY TRANSFORMER
*CHECK VOLTAGE OUT AT SECONDARY.
*IF THERE IS NOT 24V TO SECONDARY....
.......REPLACE THE TRANSFORMER
NO
*CHECK 24V WIRING FROM TRANSFORMER
TO IGNITION CONTROL / AND CHECK IF
CORRECT GAUGE OF WIRE FOR DISTANCE.
NO
*REPLACE WIRES IF NECESSARY.
*CHECK FOR 24 VAC ACROSS GAS VALVE
TERMINALS ON CONTROL. IF NO VOLTAGE,
.........REPLACE CONTROL.
NO
*ENSURE GAS IS TURNED ON AT
VALVE.*CHECK ELECTRICAL CONNECTIONS
AT
CONTROL & GAS VALVE.
*CHECK 24V WIRING CONTINUITY FROM DSI
NO
IGNITION CONTROL TO GAS VALVE, RE
IF 24V IS PRESENT AND VALVE DOES NOT
OPEN.......REPLACE VALVE
NO
*PERFORM IGNITION LEAD TEST DESCRIBED
IN "SPARK IGNITION CIRCUIT".
*CHECK DSI MODULE IGNITION POST FOR
DEFECTS.
*SPARK IGNITER MAY BE OUT OF POSITION.
NO
*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,
Page 17
2300 / IO 210 Manual
IM091231
RD: DEC 2009
R.L. 11B
BA