Originally Posted by drb1025
On my reverse cycle units, the thermostat has a setting to have the cooling pump on only when the condensers run. It is a Marine Air/Dometic unit with the Passport thermostat control.
Yep, ours is probably similar.... although we have no setting that causes the pump to run all the time.
Two Marine Air ACs, each with its own thermostat (Passport II controls), and one water pump to support both ACs.
Our water pump only runs when the thermostat causes one or the other AC compressors to run.
We DO have a setting to control whether the blower (fan) on each unit runs continuously or only when it's condenser is on. In fact, we vary that, depending on time of year. In mild weather, we cycle the fans when the condensers come on. In July and August, we usually run the fans continuously.