Error Code Status Code 15

Carrier 58MVC Error Code Status Code 15: Blower Motor Lockout

TL;DR
Indicates the blower failed to reach 250 RPM or the blower failed to communicate within the prescribed time limits. Control will NOT auto-reset. Check for: mis-wired gas valve, defective control/valve/wiring.
Disclaimer
This article is for informational purposes only and does not guarantee the accuracy or completeness of the information provided. Always turn off power and gas supply before attempting any repairs. If you smell gas, leave immediately and call your gas company. Consult a licensed HVAC technician for diagnosis and repair. Any actions taken based on this information are at your own risk.

What Does Code Status Code 15 Mean?

Indicates the blower failed to reach 250 RPM or the blower failed to communicate within the prescribed time limits. Control will NOT auto-reset. Check for: mis-wired gas valve, defective control/valve/wiring.

Common Causes

Cause Likelihood DIY?
Blower motor failure ✗ Call a pro →
Mis-wired gas valve ✗ Call a pro →
Defective blower control module ✗ Call a pro →
Loose blower wheel ✗ Call a pro →
Defective control or valve wiring ✗ Call a pro →

When to Call a Professional

Contact a licensed HVAC technician if:

Sources

  1. Carrier 58MVC Series 100 Troubleshooting Guide, p.8-9