USNRET Posted March 22, 2015 Share Posted March 22, 2015 Standard issue Honeywell thermostat. Just switched from off to cool and programmed a temp of 77 with a permanent hold (no other programming times, days, temps, etc). Woke you Friday freezing and saw that the permanent hold had changed to 66. Re-set to 77 and again set permanent hold, had the wife verify the display. This morning the set temp was 68. WTF? Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted March 22, 2015 Share Posted March 22, 2015 Does it take batteries? Maybe an acid leak. Quote Link to comment Share on other sites More sharing options...
USNRET Posted March 22, 2015 Author Share Posted March 22, 2015 Does it take batteries? Maybe an acid leak. Yep, no leak and when removed from wall the display continues so the batteries are functioning. I'm thinking excuse to try the new fangled ones. Quote Link to comment Share on other sites More sharing options...
pite Posted March 22, 2015 Share Posted March 22, 2015 #1 Check/Replace battery cells (probably two AA size) - If battery cells have leaked then throughly clean the battery compartment, surrounding and contacts #2 Check for the condensation inside the thermostat itself. - mine had condesation getting formed, that damaged the tracks. Fortunately, I could fix it in our electronics hardware lab. #3 The semiconductor component on the board may have been damaged. could be moisture, ESD damage. - This will require the replacement, unless you know how to diagnose/repair electronics parts. #4 Honeywell might replace if it's under warranty Quote Link to comment Share on other sites More sharing options...
MercedesBerater Posted March 22, 2015 Share Posted March 22, 2015 It's clearly your utility provider hacking your home to increase their bottom line 1 Quote Link to comment Share on other sites More sharing options...
oldtimer Posted March 22, 2015 Share Posted March 22, 2015 It sounds like a malfunction for sure. Get a new one, in whatever way is best. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.