Possible problem with Hydro Hot furnance
Here's the scenario: Hydro Hot furnace/hot water. 3 zones in coach. Zone 1: both Hydro Hot diesel and roof heat pump, Zone 2: Roof heat pump, Zone 3 : both Hydro Hot diesel and roof heat pump. Wh...
Forum Discussion
Your Hot water check valve AT the Hydro Hot unit for that Zone is stuck closed. Hit it with a hammer to free it up. Common problem on Aqua/Hydro Hot units. Doug
