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Chaparral Signature 300 AC/Heater Controls

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I just bought a 2001 Chaparral Signature 300.  The AC works great, but neither my marine surveyor or the previous owner knows how to switch the system over to the heater.  Apparently there is a sequence of buttons to push on the on/off panel along with the thermostat??   Does anyone know how to do this?   Any help or advice would be appreciated.


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If the panel is a Cruisair SMX II which it probably is, contact Flight Systems.  Does it have a button labeled heat?  If so and changing to heat does not turn it on, you may have a bad touchpad, they rebuild them or sell new ones.  Also, the reversing valve may be stuck on the unit, they can walk you through what you need to do. 


Google Flight Systems

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