I need to move a thermostat but I can't get the thermostat separated from the wall mount. Is there a trick to this? Thermostat is a honeywell ct87n/k.

They all hide in the thermostat base.

Load on the contacts is 24 vac standard, 30 volts max. the battery however is a standard AA or AAA Duracell battery, it is not 30 volts.... Those are available almost everywhere, You can pry the front of the thermostat from its wall mount sub base and see the batteries inside... just replace them.
Apr 18, 2017

Where can I pick up a battery for a class 2 LR95329

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Model # CT410B Internet #100574426 Store SKU #129002
Honeywell Manual Electric Baseboard Thermostat (123)
Questions & Answers (32)

• Manual 4 Wire Premium Baseboard/Line Volt Thermostat
• Compatible with 120, 240 and 277 vac baseboard heat systems
• Simple dial-type mechanical control

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Store Details & Services Accessories (1) Product Overview
The easy-to-install Honeywell Manual Electric Baseboard Thermostat works on 4-wire (double pole) electric heat applications (baseboard or line volt) and allows for simple, worry-free operation. It has a simple dial-type mechanical control and is UL and CSA listed for safety.

• Mechanical operation, non-programmable thermostat
• 120 - 240-Volt; 4 wire
• Positive off
• Easy to install
• How to install and replace your thermostat
• How to choose the right thermostat for your home
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• Use and Care Manual

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Price $21.99/each $24.97/each $44.28/each null¢ /null Name Double Pole 4-Wire Line Voltage Mechanical Thermostat Digital Non-Programmable Thermostat Single-Pole 10.4 Amp 120/240-Volt Digital Electronic Non-Programmable Wall Thermostat in White Manual Electric Baseboard Thermostat Brand Lux Honeywell Cadet Honeywell Ratings View Product View Product View Product View Product Specifications
Dimensions
Product Depth (in.)
1.5
Product Height (in.)
4.5
Product Width (in.)
2.75

Details
Color Family
Whites
Color Family
White
Operation Type
Mechanical
Returnable
90-Day
Shape
Rectangle
Thermostat Product Type
Non-Programmable Thermostat
Thermostat Shape
Rectangular
Thermostat Type
Heat Only
Voltage (v)
110/240v
Voltage (volts)
110/240
Warranty / Certifications
Certifications and Listings
1-UL Listed,CSA Listed
Manufacturer Warranty
1 year limited warranty
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Match the thermostat wires to the letters on the new thermostat terminals R Red Y yellow ETC.

Not sure if your needing info on air conditioner or a thermostat but here is the link to honeywell. Just choose your product and model #. If it was the thermostat your replacing, look back at the old one and write down what wires went where. There should be letters/numbers by each connection. This will help with the new installation.
http://yourhome.honeywell.com/home/Applications/FindOwnersManual.aspx

turn off power to thermostat. should be a small flat head screw located on the bottom of the unit. release screw and lift face from the bottom, out and up. you will then need to identify wiring before removal of back plate unless the wiring is redundant.

Hello, sounds like the problem Is a wiring issue, there might be a loose wire in the wall causing this problem with your thermostat, however usually the wires don't get loose in the wall unless they were spliced. Also, make sure the connections on the thermostat sub base are tight to each terminal and that the thermostat is mounted securely to the wall.

The thermostat is mounted in front of a hole and a void in the wall. A draft of air may be coming in from this void, where the wires are in the wall. It should be sealed so the thermostat keeps accurate temperature.
Thermostats temperature reading can be calibrated if the reading is off, as indicated by the thermostat's installation manual

It would appear to me that you have lost the 24 volt power supply to the thermostat. In referencing the manuals for this thermostat, available @ www.honeywell.com, I've found that when the thermostat is not connected to the wall plate (plate mounted on the wall, that the thermostat either snaps or screws into), it will display the -AC. This being said, either the thermostat is loose on the wall currently, or your 24 volt transformer has died. Hope this helps.

There is a seam around the edge of the Thermostat , a small screwdriver or butter knife should do the trick , if not then its mounted to a plate on the wall that has 4 corners basically...Gently squeeze the bottom and pull the bottom out , they are pretty sturdy and you shouldn't have a problem,...the wall plate may flex a little while doing this

There are three parts to a T87F thermostat. Outer ring, thermostat body, and base mount. Remove the snap on ring that goes around the dial. Remove three screws from the thermostat that mount it to its base. Remove the thermostat. Disconnect and record what screws each wire attaches to. Remove the screws holding the base to the wall.