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TROUBLE SHOOTING THE GAS CONTROL SYSTEM
START
• GAS SUPPLY ON
YES
PILOT LIGHTS WITH
PIEZO IGNITOR
YES
PILOT STAYS LIT
YES
PILOT LIGHTS MAIN
BURNER
YES
SYSTEM OK.
HONEYWELL MILLIVOLT VALVE
CHECK
• SUPPLY LINE HOOKED UP
NO
• SHUTOFF VALVE OPEN
• LOCKOUT HAS ENGAGED. WAIT
60 SECONDS AND TRY AGAIN.
• FOR SPARK AT ELECTRODE
WHILE DEPRESSING PIEZO
— 1/8" GAP TO
PILOT HOOD NEEDED.
NO
• ALL WIRING CONNECTIONS
• REPLACE PIEZO IGNITOR
• FOR AIR IN THE LINES
• THERMOPILE NEEDS A
MINIMUM 325mV. ADJUST
PILOT FLAME HEIGHT.
• ALL WIRING CONNECTIONS.
• REPLACE THERMOPILE
NO
• THERMOCOUPLE NEEDS A
MINIMUM OF 14mV.
• DEFECTIVE VALVE. TURN TO
PILOT, METER SHOULD READ
GREATER THAN 100 mV. IF
NOT, REPLACE.
• VALVE IS TURNED ON
• ON/OFF SWITCH IS NOT
TURNED ON. WATCH
NO
FOR GROUNDED WIRES!
• THERMOPILE NEEDS A
MINIMUM 325mV.
• PLUGGED BURNER ORIFICE.
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Troubleshooting
