I hope someone here can give me some advice, I am not an installer, just a poor schmuck who hired what I thought was a reputable compant to install a zoned system in our home we just built here south of Spokane - and we are having lots of problems with it.
Rheem 4 ton, 3 zoned system, 2800 SF home (9ft ceilings first flr, 8 ft second) 2 zones down, 1 up. We had problems with the cooling on it back in the warmer months (system could not cool the house down, would run non-stop and then cycle off I guess to prevent freezing the unit up?) - we noticed that zone 1 on first floor, you could barely feel any air flow coming from the registers.. well they finally fixed that and the house cooled down okay without the unit running non-stop.
But now, we are having a similiar problem with the HEAT in that we were noticing that there was very little air flow from zone 1 registers in heating call, and the system would run for about 30 minutes and was unable to raise the temp 3 deg (from 66 to 69) and then the AUXILARY heat would cut in (heat strips I guess, we sould see a little light turn on on the thermostats to indicate the AUX heat cutting in)... it still would run non-stop and we just gave up and turned the heating down to 66 so as to not run up the elec bill with those dang heat strips. So they came out and adjusted something under the house (the unit is in our crawl space) and replaced the thermoststs! (From invensys to Honeywells).. not sure why they replaced the thermoststs, that didn't make sense to me. Anyway, the system seemed to run a little better, until this morning with an outsie air temp of 34 deg, this system came on at 3AM, and NEVER SHUT OFF until 6:30 and then only for about a min. We have the house set to 68 deg. Is that NORMAL??? Air flow from the registers seems to vary quite a bit, I guess this is because of how many zones are making calls at the same time?
My wife is starting to freak out, thinking that this thing is going to burn up its running so much. Any advice is appreciated!