Furnace Blower Motor Relay Test

This video will show you how to properly diagnose your blower by using the multime. Reader questions responses help. Sounds like a bad blower fan switch relay or limit switch.

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Hvac blower fan test diagnosis faqs q a on fixing the air handler fan questions.

Furnace blower motor relay test.

I go over how to read the ratings for time how to. I d start by. Hvac blower fan testing diagnostic questions answers. The relay by the fuses clicks when i turn the fan control knob from 0 to 1.

Blower motor relays tend to wear out over time from the. Essentially an on off switch the blower motor relay s reactions start and end the heating process in hvac systems by controlling the flow of current between the power source and the motor. The blower motor is crucial to the proper functioning of your hvac system. In a blower motor the relay supplies the power that allows the fans to circulate warmed air.

Sounds like a stuck fan relay or shorted wires to the relay.