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