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Old 12-10-2014, 10:08 PM   #1
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How to take off cover to replace batteries?


A friend asked me to help replace the batteries for their thermostat. I attach photos showing their thermostat.

Would appreciate comments about how to open the cover in order to locate the batteries! Also need to know what type of batteries I should use.
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How to take off cover to replace batteries?-thermostat1.jpg   How to take off cover to replace batteries?-thermostat2.jpg  

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Old 12-10-2014, 10:14 PM   #2
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How to take off cover to replace batteries?


I am 99% sure that one just pulls straight out from the wall. Be careful not to twist it or the pins underneath can get damaged. Shut off the power to the furnace.

Google: Honeywell thermostat. They have instructions and manuals on their site and you can find a similar one and info.

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Old 12-10-2014, 10:27 PM   #3
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How to take off cover to replace batteries?


Quote:
Originally Posted by yuri View Post
I am 99% sure that one just pulls straight out from the wall. Be careful not to twist it or the pins underneath can get damaged. Shut off the power to the furnace.
Do I have to turn off furnace in the circuit breaker in order to replace the batteries?

It's winter and gas heating is used. I m afraid that turning off furnace in the circuit breaker may put out the pilot light in the gas water heater, causing CO/gas leak or other consequences I'm unaware of.

They don't have access (key) to their utility closet with the gas water heater.

Last edited by HomeLearner; 12-10-2014 at 10:36 PM.
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Old 12-10-2014, 11:06 PM   #4
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How to take off cover to replace batteries?


As long as the gas isn't turned off the pilot lights should stay lit even when electrical power is turned off.
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Old 12-11-2014, 09:37 AM   #5
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How to take off cover to replace batteries?


Shut off the power so nothing shorts as you are pulling it off. Pilot has nothing to do with the power and will stay on.
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Old 12-11-2014, 10:57 PM   #6
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How to take off cover to replace batteries?


We were unable to open the cover. Tried pressing the top and the bottom at the same time, but it wouldn't budge.

Any suggestion on how to open the cover (in order to locate the batteries)?
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Old 12-11-2014, 11:14 PM   #7
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How to take off cover to replace batteries?


The back plate is screwed to the wall and has that round notch in it.

The other part literally sticks/stabs into it and has a dozen needle like points that stick into a plug on the back plate. You have to pull it straight out and hold the back plate to the wall so it does not rip out of the wall as the drywall is not strong. If you can stick your finger nails in that crack you can kinda pry it forward.

Click on manuals in this link. Then go to the far left and click on the link 69-2487ES Quick installation guide and you can see pics of it open. pages 4 , 7, and 8

http://yourhome.honeywell.com/home/P...e/RTH7500D.htm
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Last edited by yuri; 12-11-2014 at 11:23 PM.
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Old 12-12-2014, 05:21 AM   #8
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How to take off cover to replace batteries?


just pull it off.... it will pull hard but it WILL come off I promise.
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Old 12-12-2014, 05:25 AM   #9
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How to take off cover to replace batteries?


Some of them, you have to pull a bit harder on them, then you think you should have to.
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Old 12-12-2014, 01:42 PM   #10
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How to take off cover to replace batteries?


Stats usually have a backing plate that is screwed into the wall which the rest of the stat attaches to.
(If there is no screw head visible of any side of the stat to undo)... Just hold your thumb nail against the seam of the stat section closest to the wall when trying to remove it if you are frightened of reefing the whole stat off the wall.

Some stat sections can be hinged, with the upper edge more solidly clipped in than the bottom, so I usually start with the bottom edge first.
But
Yuri's concern for bending the connecting pins if the stat is made to be pulled directly off is valid.

Last edited by how; 12-12-2014 at 01:49 PM.
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Old 12-12-2014, 01:46 PM   #11
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How to take off cover to replace batteries?


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Stats usually have a backing plate that is screwed into the wall which the rest of the stat attaches to.
(If there is no screw head visible of any side of the stat to undo)... Just hold your thumb nail against the seam of the stat section closest to the wall when trying to remove it if you are frightened of reefing the whole stat off the wall.

Some stat sections can be hinged, with the upper edge more solidly clipped in than the bottom, so I usually start with the bottom edge first.
There is no screw on any side of the thermostat. I held the back plate firmly while trying to pull the front part out, but to no avail. My friend has asked the maintenance guy in the building for help, to see if he can pull it out.
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Old 12-12-2014, 02:14 PM   #12
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How to take off cover to replace batteries?


Get a tweaker (small flat blade screwdriver), insert it into the crack where the cover meets the housing and twist it. Then move down a bit and do it again. Should pop right off...
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Old 12-12-2014, 03:32 PM   #13
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How to take off cover to replace batteries?


Go to Home Depot or Lowes and see if they have an open one on display and maybe they will let you pull it off. It is scary but not that hard once you know how.
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Old 12-12-2014, 03:33 PM   #14
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How to take off cover to replace batteries?


Quote:
Originally Posted by yuri View Post
Go to Home Depot or Lowes and see if they have an open one on display and maybe they will let you pull it off. It is scary but not that hard once you know how.
This seems like an older model. I'm not sure if Home Depot has it.
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Old 12-12-2014, 03:35 PM   #15
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How to take off cover to replace batteries?


Naw, they are still the same. They all stab on the same. There is a more expensive one with a side pull out battery compartment but not yours.

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