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Ralph Mowery

In article , says...

Bob wrote:
Hello,

Son is not in area, so couldn't look myself.

Has a Honeywell Thermostat (about 8 years old) that controls his A/C
and heat (forced hot air).

A/C didn't work so called in a HVAC man who found that the inside
of the thermostat had "lots of wires fried and shot to oblivion".

This seemed to happen right after he put in new new batteries in the
Thermostat. Does this once a year, every year.

No expert, but was wondering.

What could possibly "fry" the inside of a Thermostat ?
Can't see how putting in new batteries would.

Some voltage spike from the A/C ?

Eight years a reasonable life for one of these things ?

New Thermostat, and all seems happy now.

Any thoughts would be appreciated.

Bob

Did he see the damaged wires, or is he simply repeating the comments
from the HVAC guy? It is hard to imagine such damage based upon what
you described. Unfortunately there are people in trades that pad the
problem when called in for a repair.

Would be nice to see a pix of the box. Hard to believe it could really
be fried from just a couple of batteries. I could see if he put the
batteries in backwards as messing it up, but not totally fried.

The wires comming from the AC are usually low voltage ( about 24) low
power and only go to a small part of the control unit.

Maybe the repairman was just making small talk while telling him he
needed a new one.