Guides - Schwank STR Series Installation & Owner's Manual

19. TROUBLE SHOOTING GUIDE for Honeywell S87J-1034 Ignition Control
SET THERMOSTAT TO CALL FOR HEAT
RELAY CLOSES
YES
COMBUSTION AIR BLOWER STARTS
YES
AIR PROVING SWITCH CLOSED.
24 VOLTS AT IGNITION CONTROL
YES
SPARK ACROSS IGNITER OR
IGNITER/SENSOR GAP
YES
NO
NO
NO
NO
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CHECK THERMOSTAT
CHECK FOR LINE VOLTAGE POWER SUPPLY
CHECK WIRING CONNECTION AND RE-
PLACE BLOWER MOTOR IF DEFFECTIVE
ENSURE THAT THE AIR INTAKE AND FLUE
ARE NOT BLOCKED
ENSURE PRESSURE TUBE IS CONNECTED
AND NOT BLOCKED
CHECK AIR PRESSURE WITH MANOMETER
CHECK AIR PROVING SWITCH IS CLOSING
WHEN BLOWER IS RUNNING
REPLACE DEFECTIVE SWITCHES
PLEASE SEE APPENDIX 1 SPARK IGNITION
CIRCUIT
PULL IGNITION LEAD AND CHECK SPARK
SPARK OK?
YES
NO
REPLACE IGNITION CONTROL
CHECK IGNITION CABLE, GROUND WIRING
CERAMIC INSULATOR AND CAP, AND
CORRECT
CHECK BOOT OF THE IGNITION CABLE FOR
SIGNS OF MELTING OR BUCKLING
TAKE PROTECTIVE ACTION TO SHIELD CA
BLE AND BOOT FROM EXCESSIVE TEM
PERATURES
SP-MSTR-AC-11A
STR Manual
RD: NOV, 2003
RL: 11
KH