Is this compatible to replace a 9420A381 that is on a single zone AC, with Cool/Dry Cool/Fan settings? (Coleman Mach 9420-391 RV Thermostat

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Jan 26, 2026 - 03:47 AM

Yes, in most single-zone Coleman-Mach setups, the Coleman Mach 9420-391 will replace a 9420A381 and still give you the same basic modes (Cool, Dry, Fan) plus WiFi features. It’s sold as a single-zone Coleman-Mach thermostat and is intended to work with typical Coleman-Mach rooftop AC / heat pump control wiring.

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Is this compatible to replace a 9420A381 that is on a single zone AC, with Cool/Dry Cool/Fan settings?

Coleman Mach 9420-391 RV Thermostat | Black

The Coleman-Mach 9420-391 brings WiFi connectivity to your RV climate control. Control your A/C and heat from your phone with programmable Eco, Comfort,...

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Coleman-Mach 9420-391 Wi-Fi RV Thermostat | 12V Single-Zone

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Is this compatible to replace a 9420A381 that is on a single zone AC, with Cool/Dry Cool/Fan settings? Coleman Mach 9420-391 RV Thermostat | Black rv thermostats

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