Been a while since I've been here but there's still a few familiar names.
About one year ago I installed a TotalTouch (touch screen) thermostat.
Model P286-1200 (no humidification control).
In that time it's been perfection, couldn't be happier with accuracy and
features...well at least up until a week ago. I get home from work and my
house is at 69 degrees and the stat shows 79. I reset it and the
temperature readings are erratic.
Now I'm having my main bath remodeled and between drywall, concrete backer
and porcelain tiles the dust has been flying, so I figure that may have
caused the problem. I return it to my Total Line distributor and get
another one. Works perfect for exactly one week. I had the system off and
when I got home from work yesterday it was 81 in the house. Turned it on
(set for 77) and after a while I'm feeling cold. I go check the display and
it's still showing 81 and the house is at 74. Then in the blink of an eye
it went from 81 to 74 and satisfied. Within 10 minutes it went back up to
77 and never changed.
So this morning I run by the distributor and exchange it again. I'm good
friends with the manager and her assitant and they'll pretty much tell me
anything. After some prodding I find out they sent back a whole batch of
these stats but the ones they have on the shelf now are ok. All he knew was
something "expired" which may be nothing more than them needing
reprogramming for the change in daylight savings time. They're going to
find out more on Monday for me.
So now I've got the new stat but still have a cheap backup on right now as
I'm thinking there may be some outside source screwing killing my new ones.
I installed my furnace and A/C about 5 years ago and it's high efficiency
My line voltage is at 125.5. I don't keep tabs on my line voltage but it is
higher than I remember and I'm hoping it isn't surging even higher at times.
No load on the transformer at the furnace is 28.6 volts, exactly the same as
a new transformer hooked up to the that line voltage. In standby I'm at
about 29 between R & C at the board.
When the last stat acted up yesterday I was at 26.5 between R & C at the
stat (I'm not power stealing) as the system was running.
I mainly keep the Focus Pro series on my van so I don't have too many of
these Total Line stats out in the wild. I've installed a few in commercial
settings and have had no problems at all.
Grasping at straws here, but as the bathroom was being remodeled I installed
new lighting on a dimmer switch and a new gfci outlet. The switch is on the
opposite side of the wall as the stat and about 6" away. Lights may have
been switched on a few minutes during A/C operation but that's it. No heat
or air leakage behind stat and my temperture readings were taken with an
expensive pyrometer right by the stats thermistor. RF interference from
that dimmer maybe?
Has anyone else had issues with these or possibly know why a batch was
pulled off the shelves? Suggestions?
Thanks for reading,