Carrier AC unit not turning on. While Carrier air conditioning systems are known for their reliability, your unit might encounter a problem that will prevent it from working properly.
You can save time by asking yourself a few troubleshooting questions. For example, you may need to resolve power issues or clean the filters.
However, if you notice warm air coming from the indoor motor or the system struggles to keep up, seek professional assistance before major damage occurs.
Carrier AC unit not turning on
If your Carrier AC unit won’t turn on, check to see if the problem lies with the power source. The first step is to check your home’s circuit breaker or fuse box and then if that doesn’t help you can proceed by going to your outdoor cooling or condensing unit and see if it’s running.
Here we listed some common issues about your Carrier AC unit and their solutions.
Incoming Power Problem
The central air conditioning unit is connected to the electrical grid through a 240-volt outlet. It is equipped with an equipment control box, which contains fuses used to terminate the circuit if the system malfunctions in any way.
If you notice that your air conditioner is malfunctioning, it could be due to multiple issues and should not necessarily be attributed to just one cause.
A qualified technician will be able to go over your system and determine what exactly is wrong with it or if it’s something simple a DIY type could tackle on their own at home.
Faulty Wall Thermostat
A wall thermostat works much like a regular thermostat that can be found inside of the average home except that it is mounted upon the exterior of one’s home.
It has two main functions: to control any heating or cooling system and to protect one’s home from overheating and electrocution, both of which are caused by a complete failure of the heating/cooling system.
Local technicians are able to conduct maintenance on these units but larger problems often require a visit from a highly-skilled AC mechanic.
Run Capacitor Problem
The run capacitor for the condenser should be replaced if it is damaged.
Damaged components are inefficient and can cause a number of problems in operation including increased noise, increased thermostat setting requirements, or complete failure to start.
If any damage is caused to the element during removal or installation, ensure replacement with an identical unit.
Carrier air conditioning units can malfunction if the filter is dirty – build-up on the filters obstructs airflow and causes the air conditioner to shut down.
Check the filter for excess buildup that could be preventing it from cooling properly. You should change 1-inch-thick filters once a month if you use them.
The 2-inch or other high-capacity pleated filters can usually be changed every other month unless you notice they fill up quickly due to poor air quality; in that case, replace them monthly.
Frozen Evaporator Coil
With a typical split-system central air conditioner, the evaporator coil is often located inside the home or garage, as a part of the air handler unit.
If this particular portion of your system is oftentimes affected by frost, ice accumulation becomes likely, and extreme damage can eventually occur to this important component.
Because the evaporator coil is typically not easily accessible for repair and troubleshooting any issues with a central air conditioning system, in general, should be managed by a professional contractor.
We recommend you shut down the system and contact your local Carrier dealer when you have an issue with your evaporator coil.
How do I reset my Carrier AC unit?
Locate the “Reset” button on your air conditioning unit. Press and hold the “Reset” button down until you see a light flashing on the display panel.
This process should take approximately 3 minutes. When finished, press and hold the “Reset” button for 3 seconds – this will turn off ALL temperature controls in the unit.
How do I turn on my carrier AC without a remote?
If you want to see your Carrier AC working, but don’t want to use the remote control or if you’ve lost it and the machine is set on the automatic program, press the RESET button. You can manually start and stop the unit. The default temperature is 25°C, you can set this using the up/down.