Napoleon Gas Fireplace: Pilot lit, no gas to main burner (knob on HI, switch/thermostat ON)
Pilot lit, no gas to main burner (knob on HI, switch/thermostat ON) on a Napoleon gas fireplace: Pilot is burning and controls are calling but the main burner will not come on.
Applies to: Napoleon GD70 STARfire direct-vent fireplace (GD70NT-S natural gas, GD70PT-S propane)
Common causes of pilot lit, no gas to main burner (knob on hi, switch/thermostat on)
- Defective thermostat or wall switch
- Defective switch wiring
- Plugged main burner orifice
- Faulty valve
How to fix pilot lit, no gas to main burner (knob on hi, switch/thermostat on): step by step
- Jumper across the wall switch terminals - if the burner lights, replace the switch/thermostat.
- Disconnect the switch wires at the valve and jumper valve terminals 1 & 3 - if the burner lights, the field wires are bad; repair or replace them.
- If the burner still does not light with the jumper, check and clear the main burner orifice.
- If the orifice is clear, replace the gas valve.
If the unit shows an error code, look it up: Napoleon Gas Fireplace codes
Models
Source: Napoleon GD70NT-S / GD70PT-S Installation & Operating Instructions W415-0434, Troubleshooting table, p.26. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.