Answer
Nov 06, 2025 - 02:30 AM
No, the Coleman Mach 9430A751 Cool-Only 9-Series Zone Control Box is designed solely for A/C cooling and will not work with systems that require heat pump or heat strip capabilities. I’m not sure why your control box has that number, but for your application, you need the 9630A751, which is the proper Heat Pump/Heat-Ready Zone Control Box. This 9-Series control box supports both heat pumps and heat strips and is available here --> https://www.rvupgradestore.com/Colema...
For clarity, here’s a quick breakdown:
9430A751 is Cool-Only (A/C only),9430A755 is Heat-Ready (A/C plus heat strip, but no heat pump), and 9630A751 is for Heat-Pump/Heat-Ready systems (handles heat pumps and supports heat strips). The numbers are similar and can be confusing, so always double-check compatibility.
For clarity, here’s a quick breakdown:
9430A751 is Cool-Only (A/C only),9430A755 is Heat-Ready (A/C plus heat strip, but no heat pump), and 9630A751 is for Heat-Pump/Heat-Ready systems (handles heat pumps and supports heat strips). The numbers are similar and can be confusing, so always double-check compatibility.
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