Troubleshooting – honeywell vs8421 – Majestic Appliances 360DVS3 User Manual

Page 32

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32

360 DVS Series Direct Vent Fireplaces

10006326

Troubleshooting – Honeywell VS8421

START

CHECK

Gas Supply On

Pilot Lights With Piezo
Ignitor

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 Ignitor

Supply Line Hooked Up

Shutoff Valve Open

PILOT STAYS LIT

For Air In The Lines

Thermopile Needs A Min.
325mv. Adjust Pilot Flame
Height.

All Wiring Connections

Replace Thermopile

Thermocouple Needs A Min. Of
14mv

PILOT LIGHTS MAIN
BURNER

Valve Is Turned On

Wall Switch Is Not Turned On.
Watch For Grounded Wires!

Thermopile Needs A Min. 325mv.

Plugged Burner Orifice

Defective Valve. Turn To Pilot,
Meter Should Read Greater Than
100mv. If Not, Replace.

SYSTEM OK

YES

NO

NO

NO

NO

YES

YES

YES

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