Problem Solver

AC Won't Shut Off in Lafayette, LA

A system that runs constantly and never shuts off even after the home reaches the set temperature usually means the thermostat, a stuck relay, or the equipment itself needs a look.

Call NILOV for Diagnosis Request Help

Common Causes

A thermostat set incorrectly, miscalibrated, or with a stuck call for cooling
A stuck relay or contactor keeping the outdoor unit energized
A thermostat sensing problem making it think the home has not reached temperature
Extreme heat load the system cannot keep up with, especially with poor insulation or ductwork loss
A wiring issue keeping the system signaled to run

What You Can Safely Check

Confirm the thermostat setting and mode are correct
Try adjusting the set temperature up a few degrees to see if the system responds and shuts off
Note whether the home ever reaches the set temperature or if it seems to run indefinitely regardless of setting

When to Call NILOV

The system does not shut off even when you raise the thermostat setting well above room temperature
You suspect a stuck relay or contactor
The system has been running continuously for an extended period without the home cooling down

Dealing with this in your home?

Call NILOV. Tell us the symptom, your town, and what your system is doing.

Call (337) 450-8886 Request a Free Quote

Next Pages to Visit

AC Repair Electrical Services Thermostat Not Working High Electric Bill

FAQ

AC Won't Shut Off Questions

Is it safe to just turn the system off at the breaker if it will not stop running?

For a short time, yes, flipping the breaker off is a safe way to stop the system while you arrange service. Do not leave it off for extended periods in extreme heat without a plan for cooling the home another way.

Could this just be a hot day?

Extended runtime during extreme heat can be normal, but a system that never shuts off even after the thermostat setting is raised well above room temperature points to a stuck component, not just the weather.

Is a stuck relay dangerous?

It is primarily a comfort and equipment-wear issue rather than an immediate safety hazard, but it should be diagnosed by a professional rather than left running indefinitely.