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Most Recent Honeywell RTH3100C Questions

How To Reset Your Thermostat
I'm having a problem with my thermostat it's got cooling off heat an only working on E M Heat would ...
(Posted by Quintinmoore48 3 years ago)
Honeywell Rth3100c Function 6 Setting
A little booklet that came with the thermostat shows function 6 being set to 5 which says for gas or...
(Posted by blpearsall 5 years ago)
Where Is T Button
how do I change reading from Celsius to Fahrenheit on rth3100c
(Posted by drtorres10502 9 years ago)
Honeywell Control
Is the thermostat a 2h - 1c
(Posted by barrywwolf 9 years ago)

Popular Honeywell RTH3100C Manual Pages

Owner's Manual - Page 3

... Getting started Installation tips 2 Pre-installation checklist 3 Old thermostat removal Remove old thermostat 5 Identify and label wires 6 New thermostat installation Wallplate mounting 8 Wire connections 11 Battery installation 13 Thermostat mounting 14 RTH3100C System setup How to change settings 15 Set auxiliary heat cycle rate 16 Set emergency heat cycle rate 17 Set temperature...
Owner's Manual - Page 4

..., step-by-step instructions in three simple steps • Label wires and remove your old thermostat (see pages 5-7). • Install and wire your new thermostat (see pages 8-14). • Set your heating/cooling system (see pages 15-18). even if you've never done it before you need ready to match your new thermostat to go before ! Installation tips •...
Owner's Manual - Page 5

APrbeo-uintsytoaullratnieown cthercmkloissttat Check to make sure your package includes the following items: RTH3100C RTH3100C thermostat (wallplate attached to back) Operating Manual  Wall anchors and mounting screws (2 each) Wire Labels
Owner's Manual - Page 7

Is there a sealed tube containing mercury? Turn off power at heating/cooling system (or fuse/circuit-breaker panel). 2. RTH3100C Leave wallplate in place. Remove cover and thermostat, but leave wallplate with wires attached. If so, see inside front cover of this manual for proper disposal instructions. Old thermostat Cover  Remove your old thermostat 1.
Owner's Manual - Page 9

...supplied labels securely around each wire, wrap it with the label matching the letter on your old thermostat. (Adhesive labels are supplied in your thermostat package.) Remove the old wallplate only after all wires are labeled. As you disconnect each wire. RTH3100C Label wires and remove old wallplate Use a screwdriver to identify wire types.  Aux O E IGNORE WIRE COLORS: Use only letter...
Owner's Manual - Page 13

Labels don't match? If labels do not match letters on terminal. 2. Use a screwdriver to loosen screw terminals, insert wires, then tighten screws. 3. Push any excess wire back into the wall opening. Connect wires (typical installation) 1. Match each labeled wire with same letter on thermostat, see next page. 11 RTH3100C
Owner's Manual - Page 14

...of wire to the C terminal. If another wire is attached to the C terminal, call 1-800-468-1502 for help. 4 3 3 2 E Aux Y G O or or or or X W Y1 F X2 W1 M W2 If the old thermostat had W1, W2 and Y wires, contact a heating/ cooling contractor for help . If the old thermostat had both V and VR wires, contact a heating/ cooling contractor for help . Installation Guide Connect...
Owner's Manual - Page 16

Restore electrical power at the heating/cooling system, or at the fuse/circuit-breaker panel. Align the 4 tabs on the wallplate with corresponding slots on the back of the thermostat, then push gently until the thermostat snaps into the wall opening. Wallplate Thermostat 14 Installation Guide Mount thermostat and restore electrical power 1. TIP: If wires interfere when you try...
Owner's Manual - Page 17

...Press t to exit and save settings. 15 Press s to advance to enter system setup. Press and hold the s and t buttons until the display changes. Function number 6 Setting Setup 5 To begin, press and hold the s and t buttons to next function. RTH3100C System setup (set thermostat to match your system) Next, you must set the thermostat to control the heating and cooling system in your...
Owner's Manual - Page 18

... t button to select your auxiliary heating system and optimize its operation: 5 For gas or oil furnaces of less than 90% efficiency 1 For steam or gravity systems 3 For hot water systems & furnaces of over 90% efficiency 9 For electric furnaces When finished, press to advance to change setting. Installation Guide Function 6: Auxiliary heat cycle rate Setup 65 Press to the next...
Owner's Manual - Page 19

RTH3100C Function 8: Emergency heat cycle rate Setup 89 Press to the next function. 17 Press the t button to select your emergency heating system and optimize its operation: 9 For electric furnaces 1 For steam or gravity systems 3 For hot water systems & furnaces of over 90% efficiency 5 For gas or ...
Owner's Manual - Page 20

When finished, press and hold both buttons to change setting. Installation Guide Function 14: Temperature display Setup 14 0 Press the t button to select Fahrenheit or Celsius temperature display: 0 Fahrenheit temperature display (°F) 1 Celsius temperature display (°C) Press to exit and save changes. 18
Owner's Manual - Page 21

... alkaline batteries are correctly installed (see page 13). Display is blank • Check circuit breaker and reset if necessary. • Make sure power switch at heating & cooling system is on . • Make sure furnace door is closed . • Wait 5 minutes for the system to Heat. In case of difficulty RTH3100C If you have difficulty with your thermostat...
Owner's Manual - Page 23

... at bottom to cover marks left by old thermostats. 21 To save time, please note your model number and date code before calling. Cover plate Part No. 50002883-001 *Use to remove thermostat from wallplate. Turn thermostat over to find model number and date code. Accessories/replacement parts To order, please call Honeywell Customer Care toll-free at 1-800-468-1502...
Owner's Manual - Page 24

... from which occurred while the product was caused by the consumer. Installation Guide 1-year limited warranty Honeywell warrants this product, excluding battery, to be defective or malfunctions, Honeywell shall repair or replace it (at 1-800-468-1502. If the product is defective, (i) return it, with a bill of sale or other dated proof of purchase, to the place from...

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  • Owner's Manual

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