Goodman Furnace: Front cover pressure switch tube relocation (horizontal, left side down)
Front cover pressure switch tube relocation (horizontal, left side down) on a Goodman furnace: On a Goodman GMVC96 laid horizontally with the left side down, the front cover pressure switch tube has to be moved to the lower port on the collector box cover. If you leave it where it was, the switch can end up reading a water-filled port. It is a small job once you have the parts in hand.
Applies to: Horizontal left side down installations
Common causes of front cover pressure switch tube relocation (horizontal, left side down)
- Tube left on the upper port after a left-side-down horizontal install
- Rubber plug not moved from the bottom to the top collector box port
- Tube too long and kinked after routing
How to fix front cover pressure switch tube relocation (horizontal, left side down): step by step
- Remove the tube from the front cover pressure switch and the collector box cover.
- Move the rubber plug from the bottom collector box port to the top port.
- Take the 24 in. x 1/4 in. tube from the bag assembly.
- Connect one end to the front cover pressure switch.
- Route the tube to the lower port on the collector box cover and cut off the extra length.
- Check the tube has no kinks or sags where water can sit.
If the unit shows an error code, look it up: Goodman Furnace codes
Source: Goodman GMVC96 service and troubleshooting manual, p. 9. 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.