Goodman Furnace: Gas pressure test mode (100% firing)
Gas pressure test mode (100% firing) on a Goodman furnace: The gas pressure test menu locks the burner at 100% firing rate so gas valve pressure can be checked. Inlet supply pressure must match the unit rating plate with all other household gas appliances running.
Applies to: All 34.5in chassis furnaces
How to fix gas pressure test mode (100% firing): step by step
- Enter the Gas Pressure Test menu to lock 100% firing rate.
- Measure gas valve pressure while the burner is at full fire.
- Confirm inlet supply pressure matches the rating plate with other gas appliances running.
- Leave the test mode when finished.
If the unit shows an error code, look it up: Goodman Furnace codes
More service & test modes tips for furnace
Source: Goodman GMVC96 service and troubleshooting manual, p. 35. 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.