4055961223 Genuine Terminal Box Assembly for Electrolux Group Split System Air Conditioners, Wiring Terminal Block Housing

For Electrolux group split systems that use terminal box 4055961223, this is the genuine Electrolux replacement. On a split system, the terminal box is where the power supply and the interconnecting cable between the indoor and outdoor units are connected. Damaged terminals can stop a system working entirely, so it's a part worth replacing rather than patching. No model list is held for this assembly, so please match the number on the original before ordering.

Terminal box problems on a split system air conditioner

Every wire linking the indoor unit, the outdoor unit and the power supply lands on a terminal. Those screw terminals carry mains current as well as the control signal, so a loose screw or corroded contact quickly causes trouble. Look for melted plastic, browned or burnt terminals, a smell of hot wiring, a system that trips the breaker or a communication error between the units. Water getting into the terminal area and ants nesting around the connections are two common causes of failure.

Part details

• Genuine Electrolux part 4055961223
• Terminal box assembly
• For Electrolux group split system air conditioners
• Model fit not on file, match the number on the original

Who should fit the terminal box

This part connects directly to fixed mains wiring, so in Australia it must be installed by a licensed electrician or air conditioning technician. They'll isolate the supply, check the cable ends for heat damage and trim back any burnt copper before connecting to the new terminals. Tightening every terminal properly matters, because a loose connection is often what caused the original failure.

Questions about this part

Can the old terminals just be tightened?

If they're only loose and show no heat damage, a licensed technician may be able to tighten them. Once the plastic has melted or the metal is discoloured, replacing the terminal box with 4055961223 is the safer fix.