Fan speed control inspection at your home or office.

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Fan speed control is not working Inspection Service

The most likely cause of fan speed control failure is a resistor failure at the fan’s motor, although it can also be a defective control switch or burned-out fan motor.

Common reasons for this to happen:

  • Blower resistor malfunction
  • HVAC control panel is bad
  • Blower motor is bad

What to expect:

A top-rated mobile mechanic will come to your home or office to determine the source and cause of the fan speed control issue, and will then provide a detailed inspection report that includes the scope and cost of the necessary repairs.

How it's done:

The mechanic will perform a thorough inspection of the HVAC system. The mechanic will check for motor operation by removing the connector and checking the condition of both male and female sides. They will probably test motor operation by connecting a battery via alligator clips to the motor’s plug pins and see if it runs direct from that source.

If the motor works fine, the next step is checking the resistor. The mechanic will unplug the resistor from its connector and check for burnt terminals. That often signifies a bad resistor. To check resistor functionality, the mechanic will use a multimeter set to the resistance function, then measure the resistances from a common point on the connector to the various pins to make sure the required Ohm values are up to spec.

The mechanic will be looking for an “open” condition (infinite resistance), which reveals a defective circuit.


Recent Fan speed control is not working Inspection reviews

Excellent Rating

(68)

Rating Summary
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4
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Pedro

31 years of experience
78 reviews
Pedro
31 years of experience
Chrysler PT Cruiser L4-2.4L - Heating AC - Portage, Indiana
Pedro was wonderful! He was early first and foremost. He was very professional and he explained things to me. He worked quickly and was very thorough. Very happy with his service.

Manuel

32 years of experience
579 reviews
Manuel
32 years of experience
Ford Taurus V6-3.0L - Heating AC - Long Beach, California
Good guy. Knows his stuff. Knowledgeable and straightforward with diagnostics and repair costs. I’d love to work with him again! Thank you Manuel!

Charles

27 years of experience
38 reviews
Charles
27 years of experience
Jeep Grand Cherokee V6-3.6L - Heating AC Inspection - Van Nuys, California
Charles called the day before the appointment to touch base and answer any questions. The next day Charles was on time with a great attitude, explained exactly what was going on and we talked about our next step and confirmed our appointment to actually do the work the following week. All good.

Leo

18 years of experience
122 reviews
Leo
18 years of experience
Jeep Commander V6-3.7L - Heating AC Inspection - Greensboro, North Carolina
He did a very good job with the inspection and explain everything to my understanding, nice job Leo 5 stars *****

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