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Troubleshoot

GMC air conditioner reset button [Location and Resetting]

ByRalph P. Sita Updated onFebruary 12, 2025

Page Contents

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    • Understanding the Lack of a Reset Button on GMC Air Conditioners
  • Then, How to reset the GMC air conditioner without the reset button
    • Step 1 Power Off the Air Conditioner
    • Step 2 Locate the Outdoor Disconnect Switch
    • Step 3 Turn Off the Disconnect Switch
    • Step 4 Access the Indoor Unit
    • Step 5 Locate the Circuit Breaker Panel
    • Step 6 Switch Off the Circuit Breaker
    • Step 7 Wait for the Reset
    • Step 8 Inspect and Clean Air Filters
    • Step 9 Restore Power to the Indoor Unit
    • Step 10 Turn On the Outdoor Disconnect Switch
    • Bonus Step 11 Test the Air Conditioner
  • Should you reset the GMC air conditioner?
    • Related Articles

Understanding the Lack of a Reset Button on GMC Air Conditioners

Unlike many other air conditioning units, GMC air conditioners, including inverter models and portable, mini, or wall-mounted versions, do not feature a designated reset button on the unit, control panel, or remote. Instead, users will find a variety of buttons such as the on/off, swing, speed, timer, sleep, fan, heat, cool, and dry buttons. This absence of a reset button should not discourage users, as it is still possible to reset the unit when necessary.

For GMC air conditioners, a reset may help clear error codes or resolve minor issues. However, it is essential to identify any underlying problems to ensure a permanent solution rather than relying solely on a reset. If you encounter issues with your GMC air conditioner, follow proper troubleshooting steps to identify the root causes, which may include checking for communication faults, temperature sensor failures, or issues with water drainage. By addressing these factors, you can maintain your GMC air conditioner’s efficiency and prolong its lifespan.

Then, How to reset the GMC air conditioner without the reset button

GMC air conditioner reset button

To reset the GMC air conditioner without the reset button, follow the steps below.

Apologies for the oversight. Let me provide the steps with subheadings for clarity:

Step 1: Power Off the Air Conditioner

Ensure the air conditioner is powered off by turning off the circuit breaker or unplugging the unit from its power source.

Step 2: Locate the Outdoor Disconnect Switch

Find the disconnect switch near the outdoor unit, typically housed in a metal box mounted on the wall or positioned nearby.

Step 3: Turn Off the Disconnect Switch

Open the disconnect box cover and flip the switch inside to the “Off” position to cut off power to the outdoor unit.

Step 4: Access the Indoor Unit

Return indoors to access the air handler or indoor unit, usually located in a utility closet, attic, or basement.

Step 5: Locate the Circuit Breaker Panel

Identify the circuit breaker panel that controls the indoor unit to ensure the power is completely cut off from the indoor components.

Step 6: Switch Off the Circuit Breaker

Turn off the circuit breaker corresponding to the air conditioner’s indoor unit to disconnect power effectively.

Step 7: Wait for the Reset

Wait for approximately five to ten minutes to allow the system to reset and discharge any residual power stored in its components.

Step 8: Inspect and Clean Air Filters

While waiting, inspect the air filters and replace or clean them as necessary to maintain optimal airflow.

Step 9: Restore Power to the Indoor Unit

After the waiting period, restore power to the indoor unit by flipping the circuit breaker back to the “On” position.

Step 10: Turn On the Outdoor Disconnect Switch

Return to the outdoor disconnect switch and flip it back to the “On” position to re-energize the outdoor condenser unit.

Bonus Step 11: Test the Air Conditioner

Set the desired temperature on the thermostat and test the air conditioner to verify that it is cooling effectively.

These step-by-step instructions ensure a systematic approach to resetting a GMC air conditioner without a physical reset button. Resetting the GMC air conditioner is easy, like a cup of tea.

Should you reset the GMC air conditioner?

No, you should not always reset the AC. Particular solutions are there for particular problems.

SymptomsError codesInspection/ReasonsSolutions
Error codesE0Communication fault between PCBsCheck/replace the wire harness of the display PCB
E1Ambient temperature sensor failureCheck/replace/clean temperature sensor
E2Coil temperature sensor failureCheck/replace/clean temperature sensor
FtCondensate water high levelEmpty the drain pan
Unit not operatingPower connection looseInsert the power cord securely
The water level indicator light onEmpty the drain pan
The work unit is not productive enoughThe air filter is dirtyClean it
Air duct is blockedClean it
Exhaust hose is openClose it
Window/door openClose the door/windows
Water leakageOverflow of waterEmpty the tank
Drain hose is bend or kinkedStraighten the hose
Excessive noiseUnit is not positioned properlyPosition is properly
Loose or vibrating partsTighten all the parts
Water flowing noiseIt is normal

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Ralph P. Sita
Author: Ralph P. Sita

Ralph P. Sita is a seasoned professional with deep roots in both the HVAC and tech industries. His family’s business, Ralph P. Sita, Inc., is a locally owned and operated HVAC contractor with over 42 years of experience, serving the DC, Maryland, and Virginia areas. The company specializes in residential, commercial, and industrial heating, ventilation, and air conditioning services, offering everything from installation and maintenance to custom ductwork and indoor air quality solutions -www.ralphpsita.com. A former CPA, he spent the last decade as co-founder and co-CEO at Cybrary, a leading platform for cybersecurity and IT training. Cybrary became the largest, most well-known cybersecurity training businesses in the industry under his leadership. Smart AC Solutions is an opportunity to give back to the HVAC community by providing reliable, actionable information on all things heating and cooling.

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Ralph P. Sita

Ralph P. Sita is a seasoned professional with deep roots in both the HVAC and tech industries. His family’s business, Ralph P. Sita, Inc., is a locally owned and operated HVAC contractor with over 42 years of experience, serving the DC, Maryland, and Virginia areas. The company specializes in residential, commercial, and industrial heating, ventilation, and air conditioning services, offering everything from installation and maintenance to custom ductwork and indoor air quality solutions -www.ralphpsita.com.

A former CPA, he spent the last decade as co-founder and co-CEO at Cybrary, a leading platform for cybersecurity and IT training. Cybrary became the largest, most well-known cybersecurity training businesses in the industry under his leadership.

Smart AC Solutions is an opportunity to give back to the HVAC community by providing reliable, actionable information on all things heating and cooling.

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