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SIT 820 Nova Millivolt Valve Troubleshooting

By Fireplace Choice October 28, 2026 | Gas Valve Millivolt SIT SIT 820 Nova Standing Pilot Thermocouple Thermopile Troubleshooting | 0 comments

The SIT 820 Nova mV is a millivolt gas valve for standing pilot gas fireplaces, log sets and space heaters. The pilot burns all the time and its thermopile powers the valve, so the fireplace works without house power. Your fireplace's parts list may give the valve under the fireplace...

Robertshaw and Dexen Standing Pilot Valve Troubleshooting

By Fireplace Choice October 28, 2026 | Dexen Gas Valve Heat & Glo HHT Millivolt Robertshaw Standing Pilot Thermopile Troubleshooting | 0 comments

Robertshaw and Dexen make low-capacity millivolt gas valves for standing pilot fireplaces and gas logs. Empire, for example, fits a Dexen millivolt valve to its VFSR vent-free log burners, and we carry Dexen / Robertshaw replacement valves under several part numbers (listed below). The pilot's thermopile powers the valve, so...

Millivolt vs Electronic Ignition Gas Fireplaces: What's the Difference?

By Fireplace Choice March 19, 2026 | education electronic ignition gas fireplace IPI millivolt standing pilot thermocouple thermopile | 0 comments

If you own a gas fireplace or you're shopping for replacement parts, you've probably encountered the terms "millivolt" and "electronic ignition." Understanding which type of ignition system your fireplace uses is essential for ordering the correct parts, troubleshooting problems, and understanding how your fireplace operates.This guide explains both systems in...

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