4055961157 Genuine Electronic Control Box Assembly for Electrolux Group Air Conditioners, Split System Electrical Control Box

Genuine Electrolux part 4055961157 is an electronic control box assembly for Electrolux group split system air conditioners. Electrolux doesn't publish which models use it, and several control boxes share the same name, so treat the number as the main identifier. The label on the box you're taking out should carry 4055961157. If it doesn't, or the label has faded, contact us with the model from the unit and we'll help find the right part.

Why air conditioner control boxes fail and what you'll notice

Control boxes take a beating from heat, dust, humidity and power spikes, especially in storm season or where the supply is unstable. Over time solder joints crack, relays wear and components on the board break down. Owners usually notice the air conditioner switching off on its own, failing to respond to the remote, cycling on and off or tripping the safety switch. Sometimes there's no display at all. Because this part is sold as an assembly rather than a loose component, it can make the repair quicker.

Part details

• Genuine Electrolux part 4055961157
• Electronic control box assembly
• Electrolux group split system air conditioners
• Shares its description with other boxes, order by number

Installing the new control box

Isolate the power at the breaker and leave the unit for a few minutes before you start. Note where each plug and wire connects, using photos or labels. The mains side of a split system is fixed wiring, so the job belongs with a licensed air conditioning technician or electrician. When it's back together, run the unit for at least 15 minutes and watch for any fault codes.

Questions about this part

Is a control box the same as a main board?

Not quite. A main board is the circuit board itself, while 4055961157 is listed by Electrolux as an electronic control box assembly. Check which one your fault calls for, and match the number on the old part before ordering.