Mach 3 AC - wild temp swings
I think I know the problem, and the fix, but wanted to see if there's something easier. Rooftop air has been running hard the past week. Temps in my slice of Northern Michigan have been in the mid ...
Forum Discussion
We had a similar issue with our original OEM thermostat.
I added a wall mount digital thermostat to ours. It maintains +- 1 degree. I added 2 solid state relays to the ceiling mount to allow the thermostat to control both the compressor and the low speed fan setting. The high speed fan setting is still wired so the fan doesn't cut off, only the compressor at temperature.
It's not too hard of a job but took me quite a few hours(4 or 5)(I'm slow). Pulling the wire for the thermostat through the overhead foam insulation takes a bit of effort. I made a 3ft drill bit using a piece of aluminum rod from lowes.
A friend added one to his but ran the thermostat wire through decorative conduit on the ceiling. It looks nice and neat.
It was well worth the effort but you would still need to keep the AC from blowing directly on the thermostat.
I added a wall mount digital thermostat to ours. It maintains +- 1 degree. I added 2 solid state relays to the ceiling mount to allow the thermostat to control both the compressor and the low speed fan setting. The high speed fan setting is still wired so the fan doesn't cut off, only the compressor at temperature.
It's not too hard of a job but took me quite a few hours(4 or 5)(I'm slow). Pulling the wire for the thermostat through the overhead foam insulation takes a bit of effort. I made a 3ft drill bit using a piece of aluminum rod from lowes.
A friend added one to his but ran the thermostat wire through decorative conduit on the ceiling. It looks nice and neat.
It was well worth the effort but you would still need to keep the AC from blowing directly on the thermostat.
