Fan motor

[RedDirt85]

I’m new to wood boilers and I’m wondering if my fan is bad. Starting yesterday when the water temp drops to its normal turn on temperature the fan cover opens and there’s a hum of power but the fan doesn’t spin. I saw something about a snap disc on another site but I can’t find it. Thanks for any help.

 

[coolidge]

What brand of boiler?

 

[RedDirt85]

What brand of boiler?

WoodMaster, there’s no model number on it.

 

[Medic21]

If you controller is lit up it’s not the limit switch on those. Did you try tapping the motor? The humming you hear could be the solenoid opening too and not the motor running.

unplug it and check for power at the fan motor. If there is power you have a bad motor. If not back trace to the problem.

 

[RedDirt85]

If you controller is lit up it’s not the limit switch on those. Did you try tapping the motor? The humming you hear could be the solenoid opening too and not the motor running.

unplug it and check for power at the fan motor. If there is power you have a bad motor. If not back trace to the problem.

It’s an older one. It doesn’t have an ETC if that’s what your talking about. Thank you for your input.

 

[Medic21]

It’s an older one. It doesn’t have an ETC if that’s what your talking about. Thank you for your input.

What controls the temp then?

 

[RedDirt85]

What controls the temp then?

There’s an old school looking thermostat in the back access panel

 

[Medic21]

There’s an old school looking thermostat in the back access panel

Gotcha. Do you have a DVOM that you can check power at the fan connector?

 

[RedDirt85]

Gotcha. Do you have a DVOM that you can check power at the fan connector?

Yes

 

[Medic21]

Yes

Is there 120v at the connector?

 

[E Yoder]

Some of those old fans had oil ports that needed yearly oiling or they'd lock up.