I had a new G61MPV installed last fall. It ran great and seemed to do a good job.
This fall, we didn't start using heat until recently. The unit turned on and seemed to be doing fine. However, the last couple of mornings (Tstat set at 67, temp was 64 all mornings in question) it would rapidly turn on and off (on for about 30 seconds, off for about 30 seconds), while blowing some luke warm air. I turned off the heat at the Tstat, turned it back on later, and it seemed to start working properly. It did it again the next morning and I called for service.
The tech looked at the unit and suggested that the water was being pumped from the wrong side of the furnace (it was being pumped from the left, and not from the right where the PVC pipes exit the unit). This, he felt, was causing the problem. Of course, he just did PVC across the front of the cabinet to the right side (ugly). He also had to mod my filter access (again, ugly and hackish).
That being said, it has not done the rapid cycling in the morning (the last 2 mornings). However, it now has a weird high pitch whine to it (not loud, but different than before) and it is, on occasion, shutting off before hitting the set temp (note- the tstat is 2$ digital job they installed with the unit).
1. Is it normal to run PVC right across the front of the cabinet like that? It looks bad, and would seem to block (or make very difficult) access to the bottom...?
2. Does excess water in the unit seem like the likely culprit?
3. Will the excess water damage any internal components over time (I'm worried that running it for a year with the pump on the wrong side has caused issues)?
4. If there are fault codes being displayed in the glass, how do I read them?
5. Should I call service again about it not reaching set temp on occasion (even though I can't really duplicate the problem)?