Why Is Only One Side of My Heated Blanket Warming Up?

If your electric blanket is only heating up on one side, there could be a few potential causes. Understanding the issue and troubleshooting the problem can help you get your blanket back to full functionality.

Faulty Control Switch

One of the most common reasons for a heated blanket only working on one side is a faulty control switch. The control unit is responsible for regulating the heat output across the entire blanket. If the switch is malfunctioning, it may only be able to power one side of the heating elements.

Checking the Control Unit

To troubleshoot the control unit, try resetting it or swapping it with the other side if your blanket has dual controls. If the “working” side now stops heating, the issue is likely with the control unit itself. In this case, you’ll need to contact the manufacturer for a replacement, especially if the blanket is still under warranty.

Internal Wiring Issues

Another potential cause of uneven heating in an electric blanket is damaged or disconnected internal wiring. Over time, the wires that run through the blanket can become frayed or come loose, preventing heat from reaching certain areas.

Inspecting the Wiring

Gently shake or manipulate the blanket to see if you can get the wires to realign and restore even heating. If the problem persists, the internal wiring may be beyond repair, and you’ll need to replace the blanket.

Attempting to repair the wiring yourself is generally not recommended, as it can be a complex and dangerous task. It’s best to leave any internal repairs to the manufacturer or a professional.

If your heated blanket is only working on one side, don’t continue using it. Uneven heating can be a fire hazard. Contact the manufacturer or consider purchasing a new, reliable electric blanket for your safety.