Goodman Furnace: Use a single-stage thermostat (timed staging)
Use a single-stage thermostat (timed staging) on a Goodman furnace: With a single-stage stat the furnace runs low fire first and steps to high fire on a timer.
Applies to: GMVC95/AMVC95 upflow and *CVC9 counterflow two-stage furnaces
How to fix use a single-stage thermostat (timed staging): step by step
- Power off.
- S1 switch 3 OFF = single-stage thermostat (ON = two-stage).
- S1 switch 4 OFF = fixed 5 minute step-up, ON = auto (1-12 minutes based on the last 3 cycles).
- Power back on.
If the unit shows an error code, look it up: Goodman Furnace codes
Models
GCVC90704CXGCVC90905DXGCVC91155DXGCVC950714CXGCVC950915DXGMVC950453BXGMVC950704CXGMVC950905CXGMVC950905DXGMVC951155DX
Source: Goodman *CVC9/95 & *MVC95 Installation Instructions IO-341D (08/2010), Single-Stage Thermostat Application p.28-29; DIP Switches p.52. 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.