Coleman | Mach Soft Start Kit | 1497-3601 | R410a / R32

The Coleman Mach Soft Start Kit 1497-3601 is an OEM compressor soft-start system engineered specifically for compatible Coleman-Mach rooftop RV air conditioners. Designed to dramatically reduce compressor startup amperage, the 1497-3601 allows RV air conditioners to start and run more efficiently on limited shore power, portable generators, inverters, and energy management systems.

By reducing inrush current up to 75%, the Coleman-Mach Soft Start Kit helps prevent nuisance breaker trips, lowers startup stress on compressor components, and extends the operational lifespan of your RV air conditioning system. The intelligent soft-start technology gradually ramps compressor voltage during startup rather than delivering an abrupt power surge, resulting in smoother, quieter, and more reliable AC operation.

This OEM retrofit kit is ideal for RV owners wanting to run their air conditioner from smaller generators or improve startup performance while camping off-grid or on marginal campground power connections. The continuous-learning circuitry automatically optimizes startup characteristics over time for varying environmental and electrical conditions.

Key Features

• Reduces compressor startup amperage up to 75%
• Helps prevent breaker trips and low-voltage startup failures
• Smooth ramp-up startup minimizes voltage spikes
• Extends compressor and motor life by reducing startup stress
• Continuous-learning technology adapts to operating conditions
• Ideal for generators, solar systems, inverters, and limited shore power
• OEM Coleman-Mach engineered component
• Compatible with both new installations and retrofit applications
• Weather-resistant unibody enclosure design
• Does not alter rooftop appearance of the air conditioner
• Maintains compatibility with existing Coleman-Mach warranty coverage
• Includes mounting hardware and installation accessories

Compatible Coleman-Mach Air Conditioner Series

The Coleman-Mach 1497-3601 Soft Start Kit is commonly used with the following Coleman-Mach rooftop air conditioner and heat pump series, including both legacy R410A units and newer-generation R32 refrigerant models where equipped with compatible compressor/control configurations.

The Coleman-Mach 1497-3601 Soft Start Kit is commonly used with:

Legacy Coleman-Mach R410a Refrigerant Series Compatibility

• Coleman-Mach 450XX Series
• Coleman-Mach 452XX Series
• Coleman-Mach 470XX Series
• Coleman-Mach 472XX Series
• Coleman-Mach 480XX Series
• Coleman-Mach 482XX Series

Newer Coleman-Mach R32 Refrigerant Series Compatibility

• Coleman-Mach 370XX Series
• Coleman-Mach 372XX Series
• Coleman-Mach 380XX Series
• Coleman-Mach 382XX Series

The 1497-3601 Soft Start Kit is designed to reduce compressor startup amperage by up to 75%, helping both legacy Coleman-Mach R410Aa systems and the newer high-efficiency R32 Coleman-Mach systems start more reliably on limited shore power, generators, inverter systems, and energy management systems while reducing stress on compressor components. Compatibility may vary depending on production revisions, control board configurations, and compressor design. 

Compatibility should always be verified using the rooftop air conditioner model number prior to installation.  If you are unsure of compatibility or fitment, please text, email or call us for clarification before placing an order.

Benefits of Installing a Soft Start Kit

Adding a soft start system to your RV air conditioner can significantly improve performance and power management capabilities.

Easier Generator Operation

Allows many RV air conditioners to start using smaller portable generators that would otherwise struggle with compressor startup loads.

Reduced Electrical Stress

Minimizes harmful voltage spikes and startup strain on compressors, capacitors, relays, and motors.

Improved Off-Grid Capability

Helps rooftop AC systems operate more efficiently on inverter systems, battery banks, and solar-supported setups.

Smoother AC Startup

Provides quieter and more controlled compressor engagement during startup cycles.

Increased Component Longevity

Reduced startup stress may help extend compressor and motor service life over time.

What’s Included

• Coleman-Mach Soft Start Control Module
• Mounting Bracket
• Mounting Hardware
• Split Bushing
• Wire Nuts
• Wire Ties
• Sealant
• Installation Instructions

Technical Specifications

Short Installation Summary

The Coleman-Mach 1497-3601 Soft Start Kit installs inside the rooftop air conditioner electrical compartment and integrates directly with the compressor start circuit. Installation typically involves mounting the soft-start module, connecting several labeled wires to the compressor and capacitor terminals, securing wiring, and completing an initialization startup sequence.

Most installations can be completed in approximately 30–60 minutes by a qualified RV technician or experienced DIY installer. Always disconnect all 120V AC power and verify compatibility before installation. Incorrect wiring may damage electrical components or prevent proper air conditioner operation.

Need help confirming fitment?

Our team at United RV Parts is here to help you find the right replacement or parts for your RV Air Conditioner.

Text or call 817-984-1852 with the make and model number of your existing Air Conditioner and we’ll make sure you get exactly what you need the 1st time.