Invensys Thermostat Manual Model — Fd

Push and hold the red button fully in, then light the pilot.

: If you have a digital Invensys model (like the 9000 series) rather than the mechanical FD, "LO" typically indicates a low battery or that the room temperature is below 30°F. Invensys Thermostat Manual Model Fd

The (often branded under Robertshaw as the VC4200 series ) is a mechanical, heavy-duty commercial gas thermostat primarily used for high-capacity cooking equipment like deck ovens, pizza ovens, and convection ranges . Unlike modern residential digital thermostats, this model uses a throttling mechanism to provide precise temperature regulation for gas appliances. Key Specifications & Features Application : Designed for commercial gas-fired equipment. Push and hold the red button fully in, then light the pilot