February 25, 2018

What to check when your air conditioner won't turn on video

By Sears PartsDirect staff
What to check when your air conditioner won't turn on,
What to check when your air conditioner won't turn on,

This video shows you what to check when your central air conditioner won't turn on, including a tripped breaker, dead batteries in the thermostat and an AC disconnect switch that's turned off.

Try these easy HVAC fixes before you call for repair help

  • Check your breaker or fuse box. If your breaker is tripped, flip to off first and then to on. If it immediately trips again, shut down and call a technician.

  • If your thermostat has batteries, replace them.

  • Check near your condenser to see if your AC has a disconnect switch. If so, make sure it's turned on.

  • Still no luck? Shut it down and call in the Sears experts at (888) 831-7779.

Symptoms for window air conditioners

Choose a symptom to see related window air conditioner repairs.

Main causes: dirty air filter, air conditioner is too small for the room, temperature set too cold, control failure
Main causes: turning the air conditioner off and the back on too quickly, dirty or restricted condenser coil, compressor failure
Main causes: clogged condensate drain, air conditioner not leveled properly, leaky window air seals
Main causes: lack of electrical power, bad electronic control board, wiring failure, bad temperature sensor
Main causes: clogged drain hole, air conditioner not leveled properly
Main causes: bad compressor, lack of refrigerant, bad compressor start relay, electronic control board failure

Repair guides for window air conditioners

These step-by-step repair guides will help you safely fix what’s broken on your window air conditioner.

How to replace a window air conditioner user interface control board

Control buttons or lights on the user interface control board can stop working. This repair guide shows how to replace it.

Repair difficulty
Time required
 30 minutes or less
How to replace a window air conditioner condenser fan

If the condenser fan blade is broken or the condenser fan motor won’t run, you can replace the broken parts yourself by following these instructions.

Repair difficulty
Time required
 90 minutes or less
How to replace a window air conditioner electronic control board

The electronic control board is the brain of your window air conditioner. Here’s how to replace it.

Repair difficulty
Time required
 45 minutes or less

Articles and videos for window air conditioners

Use the advice and tips in these articles and videos to get the most out of your window air conditioner.

February 15, 2018

Prep your AC for summer video

By Sears PartsDirect staff

5 things to do to your central AC before it gets hot.

January 20, 2015

How to fix a smelly room air conditioner

By Sears PartsDirect staff

Learn how to remove and prevent odors in a window air conditioner.

December 22, 2014

Room air conditioner installation and operation tips

By Sears PartsDirect staff

Window air conditioner installation tips.