Fan or blower fault: gas furnace codes by brand

A fan, blower or inducer motor is not running at the expected speed.

Brand	Code	Meaning	What you can do
Carrier	15	Blower motor lockout	Call a pro
Carrier	41	Blower motor fault, speed or communication lost	Call a pro
Carrier	15.1	Blower lockout, no blower speed signal	Call a pro
Carrier	15.2	Blower lockout, blower never reached 500 rpm	Call a pro
Carrier	41.1	No blower speed at start-up	Call a pro
Carrier	41.2	Blower speed lost while running	Call a pro
Carrier	41.3	Blower not reaching 500 rpm	Call a pro
Goodman	b0	Circulator blower motor not running	Call a pro
Goodman	b4	Blower motor tripped (lost rotor control or high current)	Safe checks first, then a pro
Goodman	b5	Blower motor fails to start (locked rotor)	Call a pro
Goodman	b7	Blower motor lacks the data it needs to run	Call a pro
Goodman	Eb0	Circulator blower motor not running	Call a pro
Goodman	Eb4	Blower motor tripped (lost rotor control or high current)	Safe checks first, then a pro
Goodman	Eb5	Blower motor fails to start (locked rotor)	Call a pro
Goodman	Eb7	Blower motor lacks the data it needs to run	Call a pro
Goodman	EbL	Blower motor drawing too little current (hard lockout)	Call a pro
Goodman	EbU	Blower motor drawing current during pre-purge (hard lockout)	Call a pro
Goodman	EC	Inducer motor overcurrent	Call a pro