21 · Carrier · 58MVP

For 21 · Carrier · 58MVP, brand is Carrier; model / control board is 58MVP; fault code is 21; fault name is INVALID MODEL SELECTION, verified against its source on 2026-08-28.

Brand: Carrier
Model / control board: 58MVP
Fault code: 21 verified
Fault name: INVALID MODEL SELECTION verified

Sourcegraycoolingman.com

Verified2026-08-28

Review by2028-08-27

DatasetResidential gas furnace fault code lookup by brand

What the source says

Fault Code 21 INVALID MODEL SELECTION

— graycoolingman.com, retrieved 2026-08-28

Source

graycoolingman.comhttp://www.graycoolingman.com/uploads/1/0/6/6/10667336/carrier_variable-speed_2-stage_troubleshooting.pdf

Last verified against source: 2026-08-28. Due for re-check by 2028-08-27. This page as Markdown · OKF bundle · full dataset as JSON.