Wiring Connections for a Heated Exhaust Fan

How to Check an Exhaust Fan Heater that Stopped Working: The circuit wiring for many heater exhaust fan units have temperature sensors installed and may be part of the blower circuit wiring which ensures that air movement is occurring to prevent a high temperature occurrence.

Exhaust Fan Wiring
Electrical Question: I have a bathroom ceiling heater, light, nite light, exhaust vent, in one. Nutone Exhaust Fan – Model No. 9965.

The heater would only blow cold air so I bought an new heating element.
I hooked the element up one wire at a time to make sure it was right.
The blower and element won’t come on, but if I unhook the element from the blower and just hook the blower up, it works.

This electrical repair question came from: Jessie, a Homeowner from Excel, Alabama.

Exhaust Fan Heater Wiring

Application: Bathroom Exhaust Fan with Heater.
Skill Level: Intermediate to Advanced, best installed by a licensed electrical contractor.
Tools Required: Basic Electricians Pouch Hand Tools and a Voltage Tester.
Estimated Time: Depends on personal level experience, ability to work with tools and the access to the wiring for the wall switch for the exhaust fan and if a larger switch box will be required.
Precaution: The combo bathroom exhaust fan circuit should be identified, turned OFF and Tagged with a Note before working with the wiring and installing the fan speed switch.
Notice: Modifying existing wiring or installing additional bathroom electrical wiring should be done according to local and national electrical codes with a permit and be inspected.

How to Check an Exhaust Fan Heater that Stopped Working

The circuit wiring for many heater exhaust fan units have temperature sensors installed and may be part of the blower circuit wiring which ensures that air movement is occurring to prevent a high temperature occurrence.
Pay close attention to the wiring diagram inside the housing or in the installation manual.
If the heating element still does not work then check your connections.
It may be possible that a temperature sensor has failed and needs to be replaced.
Also make sure the exhaust fan housing and internal parts are clean and not coated with dust and lint.

More about Wiring Bathroom Exhaust Fans

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- When working on home electrical wiring using voltage testers can play an important part in electrical safety.
- Electrical testers enable you to identify electrical circuits and help prevent the possibility of accidental electrical shock.

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Includes:
Wiring GFCI Outlets
Wiring Home Electric Circuits
120 Volt and 240 Volt Outlet Circuits
Wiring Light Switches
Wiring 3-Wire and 4-Wire Electric Range
Wiring 3-Wire and 4-Wire Dryer Cord and Dryer Outlet
How to Troubleshoot and Repair Electrical Wiring
Wiring Methods for Upgrading Electrical Wiring
NEC Codes for Home Electrical Wiring
....and much more.

Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.

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Home Electrical Wiring and Electrical Repairs

Please Note:
Unless otherwise posted, please refer to the following Guidelines when working on Electrical Projects:

Skill Level:
Intermediate to Advanced - Electrical Repairs and Circuit Wiring is Best Performed by a Certified Electrician or Licensed Electrical Contractor.

Electrical Tools Required:
Basic Electricians Pouch of Hand Tools, a Voltage Tester and a Multi Meter.

Estimated Time:
Depends on personal level experience, ability to work with tools, work with electrical wiring, and the available access to the project area.

Precaution:
Identify the project circuit, turn it OFF and Tag it with a Note before working with the wiring.

Important:
Modifying existing electrical circuits or installing additional electrical wiring should be done according to local and National Electrical Codes, with a permit and be inspected.