Thermador Range vent hood fan or light not working
When a Thermador range vent hood fan or light is not working, start with the thermal fuse, the most likely cause when both functions are dead. Unplug the vent hood or turn off power at the circuit breaker, then use a multimeter to test the thermal fuse for continuity. Replace it if the fuse is open. If the fuse is good, test the fan switch, which controls voltage to the fan motor, followed by the on-off switch, which supplies power to the light or motor. A defective micro switch, switch kit, or rocker switch can also interrupt operation. Test each switch for continuity and replace any switch that fails the test. If only the fan is affected, focus first on the fan switch and fan motor circuit. If only the light is out, check the on-off switch and the lighting components as well as the bulb. These steps apply to Thermador range vent hoods, including models with separate fan and light controls. Enter your model number to find the exact replacement thermal fuse, switch, or other part for your specific Thermador range vent hood.
01 - Thermador Range Vent Hood Thermal Fuse
To determine if the thermal fuse has blown, use a multimeter to test the fuse for continuity. If the thermal fuse does not have continuity, replace it.
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A defective fan switch may not allow voltage to reach the fan motor to run it. To determine if the switch is defective, use a multimeter to test the switch for continuity. If the switch does not have continuity, replace it.
A defective on-off switch may not allow voltage to reach a light or fan motor to turn the light or motor on. To determine if the switch is defective, use a multimeter to test the switch for continuity. If the switch does not have continuity, replace it.
To determine if the micro switch is defective, use a multimeter to test the switch for continuity. If the micro switch does not have continuity, replace it.
To determine if the switch kit is defective, use a multimeter to test the switch for continuity. If the switch does not have continuity, replace the switch kit.
To determine if the rocker switch is defective, use a multimeter to test the switch for continuity. If the rocker switch does not have continuity, replace it.