Changing batteries American Standard 802A Thermostat

[Snagglefoot]

While doing some manual reading on a American Standard thermostat I realized I had not ever changed the batteries for the backup. It was installed in 2012. I turned off the power at the furnace switch and pulled the unit straight out from its “ docking plate”. The three AAA Duracells marked with a best before date of 2017 were corroded. In about five minutes I removed the batteries and cleaned up the contacts with fresh lemon juice and Q-tips. After popping in three new triple A’s I replaced the unit and turned the power on. I didn’t lose any of my settings. Not sure if that’s a time thing. All good. Here are some pics. All temps in degrees C. Enjoy.

 

[eljefino]

Yeah the newer Duracells have a rep for leaking once they die. Good job bringing that unit back.

 

[dishdude]

Those are really old batteries, but it always seems to be Duracells leaking. Clorox wipes do a great job of cleaning up the mess they leave behind.

 

[Lubener]

That is the reason I never use Duracells anymore.

 

[Geekhead]

That is the reason I never use Duracells anymore.

Suggestions?

 

[johnmyster]

In the mechanical maintenance forum. I love it.

 

[Snagglefoot]

In the mechanical maintenance forum. I love it.

Suggestions?

 

[johnmyster]

Suggestions?

I work in industry. HVAC controls fall under mechanical maintenance. I thought it was funny/appropriate.

 

[dishdude]

Suggestions?

Energizer, even Rayovac is better.

 

[Lubener]

Suggestions?

Energizer.