Wayne EHG - Page 22

22
NO
NO IGNITION ARC ESTABLISHED
1. RESET CONTROL:
-
MOTOR STARTS
–
COMPLETES 30 SECOND PREPURGE CYCLE, 8 SECOND SAFE START CHECK SERIES.
-GAS VALVE OPENS, REGULATING ADEQUATE GAS PRESSURE.
-NO FLAME ESTABLISHED – PRIMARY CONTROL LOCKS OUT AFTER 4 SECOND HONEYWELL SERIES TRIAL FOR IGNIITION PERIODS.
IN ORDER FOR THE FOLLOWING FUNCTIONAL TEST TO BE MADE, THE CONTROL MUST BE RESET AND THE
TESTS MONITORED DURING THE 4 SECOND HONEYWELL SERIES TRIAL FOR IGNITION THAT OCCURS AT THE
END OF THE 30 SECOND PREPURGE CYCLE, AND THE 8 SECOND SAFE START CHECK.
2. CHECK FOR 120VAC BETWEEN TWO LEADS OF IGNITION TRANSFORMER.
CHECK ELECTRICAL WIRING AND CONNECTIONS PER
WIRING DIAGRAM FIG. 11.
CHECK THE FLAME SENSING CIRCUIT FOR:
1. GROUNDED FLAMEROD
2. DAMAGE TO FLAMEROD LEAD INSULATION
3. CHECK FLAME ROD FOR DEPOSITS.
REFER TO TECHNICAL INFORMATION, PAGE 34.
NOTE:MAKE SURE THE FLAMEROD CIRCUIT AND/OR
PRIMARY CONTROL IS MOISTURE FREE.
OK
OK
REPLACE PRIMARY IGNITION CONTROL.
3. CHECK ELECTRICAL WIRING AND CONNECTIONS PER FIG. 11.
OK
OK
4. CHECK HIGH VOLTAGE LEAD AND CONNECTION TO IGNITION ELECTRODE ROD.
OK
5. INSPECT IGNITION ELECTRODE FOR CRACKED INSULATOR AND CORRECT GAP FIG 1.
OK
6. REPLACE IGNITION TRANSFORMER