Carrier Furnace Repair: Match the Control Family
If you smell gas or a CO alarm sounds, leave the home and call the gas utility or 911 from outside.
For Carrier furnace repair, call an independent heating contractor with the full furnace model and recorded status code. The 58CVA/58CVX, 58MVP-family and 59MN7A guides cover different controls. Describe which stage of heat failed before anyone applies a code definition or proposes a replacement part.
Talk to a contractor about your Carrier furnace
Call (877) 565-3062One call reaches a contractor registered for your ZIP; ask the fee and the arrival window.
HVAC Responder is an independent referral service and is not affiliated with or authorized by Carrier.
HVAC Responder Editorial Team · Reviewed 2026-11-01 · Facts quoted from manufacturer documentation
Three Carrier control families require separate tables
A code number is only the start of the service conversation. Keep the TG-GFC80-02 guide for 58CVA/58CVX separate from 58-06T and the modulating 59MN7A guide. The pressure-switch descriptions are tied to the named control and heating stage. Ask the contractor to identify the applicable table on the work order.
The Carrier 58CVA/58CVX troubleshooting guide, TG-GFC80-02 lists code 31 as:
31 HIGH−HEAT PRESSURE SWITCH OR RELAY DID NOT CLOSE OR REOPENED
Control relay may be defective or gas valve is mis−wired. Refer to status code #32.
The Carrier 59MN7A troubleshooting guide, 59MN7A-01T lists code 35 as:
35 GAS VALVE FAULT
Indicates the modulating gas valve failed to respond to a command from the furnace control or power to the gas valve electronics was interrupted.
Ignition and blower complaints need different evidence
If ignition fails, give the contractor the ignition attempt and code history. If the blower starts and stops, describe that sequence separately. The guides distinguish ignition proving from blower motor communication; the two complaints should not become one assumed board failure.
The Carrier 58CVA/58CVX troubleshooting guide, TG-GFC80-02 also explains:
Control will try three more times before lockout #14 occurs. If flame signal is lost during blower on−delay period, blower will come on for the selected blower off−delay.
Indicates the blower failed to reach 250 RPM or the blower failed to communicate within the prescribed time limits. Thirty seconds after being turned ON or ten seconds during steady−state operation.
Discuss your Carrier furnace with a contractor
Call (877) 565-3062One call reaches a contractor registered for your ZIP; ask the fee and the arrival window.
Product category and model applicability
The manufacturer catalog identifies the product category below. The service examples on this page are limited to 58CVA/58CVX, 58MVP-family and 59MN7A furnaces. Compare the full installed model with the cited manual before applying a signal or component description.
In the document “HVAC Systems for Homeowners | Carrier Residential”, Carrier lists this equipment under its Furnaces
category.
Carrier warranty information to check
Carrier describes a Consumer Choice program for eligible new equipment. Eligibility, dealer participation and the actual warranty certificate must be checked before anyone promises parts or labor coverage. Bring the installation date and registration record.
According to Carrier Home HVAC Warranty Registration & Coverage:
you can select either a 10-year parts-only limited warranty or a 5-year parts plus 3-year labor limited warranty.
What to tell the contractor
Read the complete series from the rating-plate record. Report short and long flashes separately, the stage requested, and whether ignition or blower operation stops first.
Related repair and diagnostic guides
What happens when you call about your Carrier furnace
- Your call routes to an independent local contractor registered for your ZIP code.
- Ask the fee and the arrival window.
- The decision to hire stays with you.
One call reaches a contractor registered for your ZIP; ask the fee and the arrival window.
Sources and review date
- Carrier 58CVA/58CVX troubleshooting guide, TG-GFC80-02, PDF · Captured source reviewed 2026-11-01
- Carrier 59MN7A troubleshooting guide, 59MN7A-01T, PDF · Captured source reviewed 2026-11-01
- HVAC Systems for Homeowners | Carrier Residential · Captured source reviewed 2026-11-01
- Carrier Home HVAC Warranty Registration & Coverage · Captured source reviewed 2026-11-01