Question from user almasd94 at hvacadvice at reddit.

Answer:

If your thermostat is tripping or causing issues when you turn on your air conditioning, it could be due to several potential causes. Here are a few troubleshooting steps you can take:

1. Check the wiring: Inspect the wiring connections between the thermostat and the air conditioning unit. Loose or damaged wires can cause a short circuit and lead to tripping. Make sure all connections are secure and there are no exposed wires.

2. Verify power supply: Ensure that the thermostat and air conditioning unit are receiving an adequate power supply. Check the circuit breaker or fuse box to see if the breaker has tripped or the fuse has blown. If so, reset the breaker or replace the fuse and see if the issue persists.

3. Examine the thermostat: Inspect the thermostat itself for any visible damage or loose components. Dust or debris accumulation can also cause issues. If necessary, clean the thermostat carefully using compressed air or a soft brush.

4. Test with a different thermostat: If possible, try using a different thermostat temporarily to see if the issue persists. This can help determine whether the problem lies with the thermostat or the air conditioning unit.

5. Check for short circuits: There may be a short circuit in the air conditioning unit that causes the thermostat to trip. This could be due to damaged wiring or a faulty component within the AC system. It's recommended to have a professional HVAC technician inspect and diagnose the AC unit for any electrical issues.

6. Consult a professional: If the above steps do not resolve the problem, it's best to contact a qualified HVAC technician. They will have the expertise and equipment to diagnose the exact cause of the tripping and perform any necessary repairs or replacements.

Remember, working with electrical systems can be dangerous, so if you're not comfortable or experienced with handling these troubleshooting steps, it's always best to seek professional assistance to avoid any potential hazards.

thermostat will trip when ac is turned on