Dometic CCC2 Thermostat furnace/HP are mixed up
Our thermostat just started acting strangely after more than a year of excellent dependability. We put the setting on "FURNACE" mode and sometimes we get the furnace, sometimes we get furnace and heat pump simultaneously, and sometimes only the heat pump when in "FURNACE" mode. The Heat Pump mode is always heat pump. Thoughts on what the issue/solution might be? The Dometic 'quick start' and 'operating instructions' we have weren't helpful. As always many thanks in advance,
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rosannemarie 
2011 Canyon Star 3642, 2008 Chevy HHR
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