Dometic Element 12v 170w T/S RMD8551/RMS8555 & RMD21 Fridge. 2890170521

The Dometic fridge element is a heating element used in absorption-style refrigerators—commonly found in caravans, motorhomes, and RVs—that operate using gas or electric power. It plays a crucial role in the electric operation of the fridge.

What It Does:

The fridge element heats the ammonia solution in the refrigeration unit when mains (240V) or 12V DC power is selected.

This heat initiates the cooling cycle, allowing the fridge to operate without a compressor (as in absorption refrigeration).

Types of Dometic Elements:

240V Element:

Used when connected to mains power at a powered site.

12V Element:

Used when running off the vehicle battery or while driving (usually via an auxiliary power setup).

Wattage Variants:

Comes in different power ratings (e.g., 85W, 135W, 190W, 325W), depending on the model of the fridge.

Common Specs:

Voltage: 12V DC or 240V AC

Wattage: Typically between 85W and 325W

Shape: Cylindrical with two electrical connectors

Location: Installed in the boiler tube at the rear of the fridge

Typical Uses & Compatibility:

Compatible with models like RM2350, RM2453, RM2555, and others depending on the specific part number.

Used as a replacement part if the fridge stops cooling on electric mode but works on gas.

Symptoms of a Faulty Element:

Fridge doesn’t cool on 240V or 12V mode.

No current draw when tested with a multimeter.

Blown fuse or tripped breaker (if element is shorted).