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Aquatherm Combo Air Handler Water issue
I tried to search for this problem but only found matches that were close to my problem.
Here goes. I have a brand new Aquatherm AC/Heat air handler that is piped into the complexes main boiler system which is shared with 20 other condos. I called them back for this issue, but they are scratching their heads... which is concerning. They even had to repipe the inlet and outlet pipes after the install because they plumbed it backwards. In plumbed into the Out and vice versa. I wasn't impressed but it was in and looked nice enough.
Anywho... The heat works fine. Water going through the pipes is at a good solid 120-130 degrees and 95 degrees coming from the registers. But when I turn on the AC, it still blows warm air. Not quite 95 degrees but not cold.
The air handler pipes are hot when the AC is on. (cooler on the return side and scalding hot on the inlet side) But when both systems are off and nothing is on, BOTH pipes remain scalding hot.
My assumption is that the hot water is flowing all of the time in both AC and Heat modes? My other assumption is that I would think the hot water should shut off unless it's in heat mode, right?
When I turn off the isolation valves at the wall, the AC blows ice cold. (The entire system has been replaced so the AC works great.... but it doesn't like to switch from Heat to Cold unless I turn off the hand valves.
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