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Vermont Castings, Majestic Products: DVR33
10004920
Troubleshooting – Honeywell Millivolt Valve
START CHECK
Gas Supply ON
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Pilot lights with Piezo
igniter
•Lockout has engaged. Wait 60
seconds and try again.
•For spark at electrode while
depressing Piezo, 1/8" gap
to pilot hood needed.
•All wiring connections
•Replace Piezo igniter
•Supply line hooked up
•Shutoff valve OPEN
PILOT STAYS LIT
•For air in the lines
•Thermopile needs min. 325 mv
•Adjust Pilot flame height
•All wiring connections
•Replace thermopile
•Thermocouple needs min. 14 mv
PILOT LIGHTS MAIN
BURNER
•Valve is turned ON
•Wall switch is not turned ON.
Watch for grounded wires!
•Thermopile needs min. 325 mv.
•Plugged burner orifice
•Defective Valve: Turn to Pilot;
meter should read greater than
100 mv. If not, replace.
SYSTEM OK
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YES
NO
NO
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NO
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NO
YES
YES
YES
Window Frame Assembly Should be Removed Before Service Work