Troubleshooting - Vermont Castings UVL18RN Installation And Operation Instructions Manual

START
Gas supply on
YES
Pilot lights with Piezo
YES
Pilot stays lit
YES
Pilot lights main
burner
YES
System OK
1414

Troubleshooting

Honeywell Valve (UVL-R series)
CHECK
• Supply line hooked up
NO
• Shutoff valve open
• Lockout has engaged. Wait 60 seconds
and try again
• Piezo screws are tight for good ground
• For spark at electrode while depressing
NO
piezo - 1/8" gap to pilot hood needed
• All wiring connections
• Replace piezo ignitor
• For air in the lines
• Thermopile needs a minimum of 325mV
• All wiring connections
NO
• Replace thermopile
• Thermocouple needs a minimum of 14mV
• Defective valve. turn to pilot, meter should
read greater than 100mV. If not, replace the
valve.
• Valve turned on
NO
• Wall switch is not turned on
• Thermopile needs a minimum of 325mV
• Plugged burner
UVL Series