Dometic TMG Control Module Kit - Fits AS/SH/12 Series - Part# 385310918

DometicSKU: 385310918
Added to catalog: March 10, 2026
Last product update: June 5, 2026 at 11:21 PM

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The Dometic TMG Control Module Kit is the command center for your RV's heating and cooling system. This essential component manages temperature regulation across AS, SH, and 12 Series Dometic furnaces and air conditioning units, ensuring your living space stays comfortable in any climate. If your thermostat isn't responding or your heating/cooling cycles are erratic, this control module may be the solution.

Key Features

  • Complete control module kit with all necessary components for AS/SH/12 Series systems
  • Manages furnace and air conditioning operation through integrated logic control
  • Direct replacement for original Dometic OEM part—no modifications required
  • Restores proper temperature cycling and thermostat responsiveness
  • Includes mounting hardware and connection terminals
  • Factory-tested to Dometic specifications before shipment

Technical Specifications

Part Number 385310918
Compatible Series AS, SH, 12 Series
Component Type Control Module Kit
Application Furnace and Air Conditioning Control
OEM Status Genuine Dometic Original Equipment

Frequently Asked Questions

Q: How do I know if my control module has failed?
A: Common signs include the thermostat not responding to temperature adjustments, the furnace or AC running continuously without cycling off, or no power reaching your heating/cooling system. If you've verified power is reaching the unit and the thermostat display works, the control module is often the culprit.

Q: Will this kit work with my specific Dometic model?
A: This module is designed for AS, SH, and 12 Series Dometic systems. Check your RV's furnace or AC unit documentation or the model plate to confirm your series designation. Our support team can help verify compatibility if you're unsure.

Q: Is professional installation required?
A: While many RV owners with mechanical experience can install this module, it involves electrical connections to your heating/cooling system. If you're not comfortable working with RV electrical systems, we recommend having a qualified RV technician perform the installation to ensure proper operation and safety.

Why Choose Elkhart RV Parts

We specialize in hard-to-find Dometic replacement parts that keep your RV running smoothly. Shipping directly from Elkhart, Indiana—the RV capital of the world—we stock genuine OEM Dometic components backed by expert customer support. When you need the exact part your system was built with, trust the specialists who know RVs inside and out.

100% Authentic OEM Parts

Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.

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