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Carrier furnace error code 42

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Carrier furnace error code 42

Carrier furnaces are a popular option for homeowners in the US. They provide several features to make your home more comfortable, including an easy-to-use interface and intuitive controls.

We often encounter Carrier furnace error code 42 when inspecting or repairing a Carrier furnace.

The error will likely occur when the blower motor gets overheated and stops working.

As a result, it won’t be able to blow air into the furnace area, triggering the error code 42.

How does this happen? The blower motor is usually controlled by a circuit board that could get damaged if it has been too close to excessive heat for too long.

This is where some people make mistakes because they don’t turn off the power switch before servicing their old Carrier furnace!

Carrier furnaces are often found in residential houses, and many people have difficulty understanding their error codes.

With the help of this guide, you will be able to understand Carrier furnace error code 42.

Carrier furnaces emit two types of error codes: heating and cooling errors. The most common heating code is 42, which means that the sensor has failed or the circuit board is not receiving power.

The following are the steps to troubleshoot Carrier furnace error code 42:

1. Check for loose wires and connections. Ensure that there is good contact at all the terminals, buttons and plugs. If there is no loose connection, check for broken wires. Also, ensure that the terminal is in good contact with the breakers or wiring box.

2. On some units, if the blower does not work, replace it with a new one and see if 42 will turn off. This usually happens when we have had too many cycles on our blower motor where we need to replace them every 100,000 hours (around 2-3 years).

3a: Ensure proper voltage comes into your home with a multimeter set to volts DC (volt direct current). If it reads anything less than 170 volts DC, then call an electrician immediately

“Inspections, Installations, Repairs & Maintenance”