The Dometic Relay Start Module (Part# 339883) is a critical control component for Dometic EI1000 diesel heaters operating on 230V power systems. This module manages the ignition sequence and startup operation, ensuring reliable cold-weather heating performance in your RV. If your heater won't ignite or cycles unpredictably, a faulty relay start module is often the culprit.

Key Features

• 230V rated relay module for Dometic EI1000 heaters
• Controls ignition timing and glow plug activation during startup
• Prevents hard-start conditions and incomplete combustion cycles
• Direct OEM replacement—no modifications required
• Genuine Dometic component with full reliability
• Essential for regions requiring 230V (European/International RVs)

Technical Specifications

Specification	Detail
Part Number	339883
Heater Model	Dometic EI1000
Voltage Rating	230V AC
Component Type	Relay Start Module
OEM Status	Genuine Dometic

Frequently Asked Questions

How do I know if my relay start module has failed?

Signs of failure include the heater clicking repeatedly without igniting, taking longer than normal to start, or failing to start at all. You may also notice the glow plug indicator light staying on longer than usual.

Is this module compatible with 120V heaters?

No. This is a 230V-specific module for the EI1000. Do not attempt to use it on 120V systems. Verify your heater's voltage rating before ordering.

Can I install this myself?

The relay start module is typically located in the heater control box. If you're comfortable with basic electrical work and can safely access your heater, installation is straightforward. However, we recommend consulting your heater manual or contacting our support team if you're unsure.

Why Choose Elkhart RV Parts

We specialize in hard-to-find Dometic RV replacement parts that other retailers don't stock. Shipping directly from Elkhart, Indiana—the RV capital of the world—we guarantee genuine OEM Dometic components and expert support to help you find the exact part you need.