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Bathroom vent heater not working

Posted on 12/12/24 at 8:17 pm
Posted by BilbeauTBaggins
probably stuck in traffic
Member since May 2021
7132 posts
Posted on 12/12/24 at 8:17 pm
Bathroom vent has 3 controls:
Light
Fan
Heater

Heater clicks on for half a second before shutting off. Both light and normal fan work. Should I just go ahead and get a new one or is there a super easy/inexpensive fix that someone in here has dealt with before?
Posted by ItzMe1972
Member since Dec 2013
11398 posts
Posted on 12/12/24 at 8:21 pm to
What brand?

I have a Broan that had some loose and burned connections/wiring that I fixed up.

Many are modular and you can just buy a repair part. Otherwise, trying to find one to match the cutout in your ceiling may be challenging.
Posted by BilbeauTBaggins
probably stuck in traffic
Member since May 2021
7132 posts
Posted on 12/12/24 at 8:39 pm to


Just attempted again. It kicked on for about 3 seconds with some air flow then it shut off completely.
Posted by ItzMe1972
Member since Dec 2013
11398 posts
Posted on 12/12/24 at 8:51 pm to
That's a Broan. YouTube has a couple of videos on how to troubleshoot/repair.

Good news is that you can probably get a replacement to fit in that cutout if you are unable to fix that one.
Posted by LEASTBAY
Member since Aug 2007
15637 posts
Posted on 12/12/24 at 9:19 pm to
The heating element might have an inline thermal fuse. They are a few bucks on eBay. Change it on both of mine. Different brand I'm pretty sure though. Looks like this, can check if current will flow through with a multimeter.
Posted by ItzMe1972
Member since Dec 2013
11398 posts
Posted on 12/12/24 at 9:45 pm to
I doubt it's the fuse because it runs briefly. Blown fuse probably would not.

May be a broken heating element that opens up when it heats up.
Posted by LsuFan_1955
Slidell, La
Member since Jul 2013
1888 posts
Posted on 12/13/24 at 1:17 am to
The picture you posted looks like a model 663 Broan. Here is an Amazon page of replacement parts for Broan exhaust/heater fans.

Broan replacement parts on Amazon
Posted by Tree_Fall
Member since Mar 2021
822 posts
Posted on 12/13/24 at 8:31 am to
I have Panasonic vent/fan/heater which is similar to Braun. The heater module costs about $35. Swapping out requires that the squirrel-cage fan be moved aside. That's a bit tricky working above your head... sharp metal parts, but OK DIY project. I've never tried just replacing the failed thermal switch in the module. It's riveted in place. For a heavily used unit it fails in about 5 years. A less used unit just died at 20 years. Nice to have working on cold mornings.
Posted by Napoleon
Kenna
Member since Dec 2007
70892 posts
Posted on 12/13/24 at 12:41 pm to
These have a built in thermal overload. It's like a $2 part on Amazon. Simply change the thermal fuse/ overload and your good to go.
Posted by CEB
Member since May 2023
70 posts
Posted on 12/13/24 at 4:11 pm to
That’s a Broan/Nutone. You can order a replacement heating unit. Remove cover and you unplug heater and a few screws.
Posted by LSUDad
Still on the move
Member since May 2004
60614 posts
Posted on 12/14/24 at 11:28 pm to
If you want an easy fix. Buy the same make and model, remove inset unit, replace with new unit. Leave the metal casing, put in new inset, replace new cover.
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