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Remove Glass Doors Before Service Work
START
GAS SUPPLY ON
YES
PILOT LIGHTS WITH
PIEZO IGNITOR
YES
PILOT STAYS LIT
YES
PILOT LIGHTS MAIN
BURNER
YES
SYSTEM OK
10004798
Troubleshooting – Honeywell VS8421
CHECK
•
NO
Supply Line Hooked Up
•
Shutoff Valve Open
•
Lockout Has Engaged. Wait 60
Seconds And Try Again.
•
For Spark At Electrode While
Depressing Piezo
NO
1/8" Gap To Pilot Hood Needed.
•
All Wiring Connections
•
Replace Piezo Ignitor
•
For Air In The Lines
•
Thermopile Needs A Min.
325mv. Adjust Pilot Flame
Height.
•
All Wiring Connections
NO
•
Replace Thermopile
•
Thermocouple Needs A Min. Of
14mv
•
Defective Valve. Turn To Pilot,
Meter Should Read Greater
Than 100mv. If Not, Replace.
•
Valve Is Turned On
•
Wall Switch Is Not Turned On.
Watch For Grounded Wires!
NO
•
Thermopile Needs A Min. 325mv.
•
Plugged Burner Orifice
Pyromaster
H33BDVRRN/P
©
23
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