Bryant furnace 41: Meaning & Fix

Status code41Bryant

What does Bryant 41 mean?

Blower motor fault. The blower failed to reach 250 RPM, or failed to communicate, within 30 seconds after being turned on or within 10 seconds during steady-state operation.

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How it shows: Amber LED on a Bryant 80% two-stage variable-speed furnace (troubleshooting guide TG-GFB80-02). Short flashes are the first digit and long flashes are the second. Code 41 is 4 short and 1 long

Bryant 41 is the blower motor fault, not the lockout. The blower failed to reach 250 RPM or failed to communicate within 30 seconds after being turned on, or within 10 seconds during steady running. Lockout 15 is what the chart stores after that miss happens on two heating cycles in a row, and 15 says to see 41. The component-test row for 41 says to check the blower, the wiring, and the furnace control.

Likely causes

Blower did not reach 250 RPM within 30 seconds of being turned on
Blower did not communicate within 30 seconds of being turned on
During steady running, the blower missed 250 RPM or communication within 10 seconds

Safe checks for 41

Count 4 short flashes and 1 long flash. If this happened on two heating cycles in a row, the chart stores lockout 15
Technicianthe component-test line for code 41 says to check the blower, the wiring, and the furnace control

Safety firstIf you smell gas, do not touch any electrical switch or use a phone in the building; leave immediately and call your gas supplier from outside. Turn off electrical power at the furnace switch or breaker before opening any panel, and never bypass or jumper a limit, rollout or pressure switch. Gas valve, burner, venting, wiring and control-board work should be done by a licensed HVAC technician.

Capacitors can hold a charge after the power is off. Safety terms.

When to call a pro

Call a licensed HVAC technician. Blower RPM and communication checks are not a homeowner meter job.

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Parts & tools for this fix

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Furnace blower (circulator) motor: guide

In this code: Blower did not reach 250 RPM within 30 seconds of being turned on

This one is for a technician to test or replace, so we only explain it and do not link to buy it.

Furnace control board and low-voltage fuse: guide

In this code: Parts list for this code: Furnace control board