Furnace Blower Motor Relay Test

In a blower motor the relay supplies the power that allows the fans to circulate warmed air. 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. Hvac blower fan test diagnosis faqs q a on fixing the air handler fan questions.

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This video will show you how to properly diagnose your blower by using the multime.

Furnace blower motor relay test.

Reader questions responses help. Hvac blower fan testing diagnostic questions answers. Sounds like a stuck fan relay or shorted wires to the relay. Blower motor relays tend to wear out over time from the.

The blower motor is crucial to the proper functioning of your hvac system. I go over how to read the ratings for time how to. The relay by the fuses clicks when i turn the fan control knob from 0 to 1. Sounds like a bad blower fan switch relay or limit switch.

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