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Question posted by gunny79866 on April 26th, 2015

Thermostate Not Keeping Correct Temp Of Home

put in new rth5100b non programable thermostat inside temprature always on 64 degrees ant clues as to why

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Related Honeywell RTH5100B Manual Pages

Owner's Manual - Page 1

RTH5100B Non-programmable Thermostat INSTALLATION INSTRUCTIONS The RTH5100B Thermostat provides electronic control of 24 Vac singlestage heating and cooling systems or 750 mV heating systems. START HERE For assistance with your Honeywell product, please ...

Owner's Manual - Page 2

Contents Prepare for Installation 3 Follow Important Instructions 5 Remove Old Thermostat 6 Follow Special Instructions 7 Label Old Thermostat Wires 10 Mount New Wallplate to Wall 11 Connect Wires to New Wallplate 15 Install Batteries 20 Attach New Thermostat to Wallplate 21 Configure Installer Setup 22 Customer Assistance 28 Limited One-Year Warranty 29 69-1716 2

Owner's Manual - Page 3

Prepare for Installation 1. Check that the following items are included: Inside SetCtinogol Fan Auto SysteCmoolOn Cool PRESS WALLPLATE THERMOSTAT MOUNTING SCREWS (2) AND WALL ANCHORS (2) OPERATING INSTRUCTIONS INSTALLATION INSTRUCTIONS WIRE LABELS OPERATING INSTRUCTIONS CAUTION CARD INSTA ATION CAUTION les X2 Y www M22033 If any of ...

Owner's Manual - Page 5

... later how to use the enclosed wire labels to correctly mark the wires connected to the heating and/or cooling system. OLD THERMOSTAT YELLOW WHITE Y W RED G GREEN RC R ORANGE ! DO NOT WIRE NEW THERMOSTAT BASED ON WIRE COLOR. Do not connect the wires to the new thermostat based on wire color because damage can occur to...

Owner's Manual - Page 6

... or fuse/circuit breaker panel. 2. Contact your old thermostat in a sealed tube. 69-1716 6 Remove the old thermostat from the old thermostat. 3. Remove Old Thermostat 1. Y G C OLD THERMOSTAT WALLPLATE W THERMOSTAT R COVER .2.18 .9 .7 .5 L O .25 N G E R .4 .3 M22036 MERCURY NOTICE If you are replacing a thermostat that contains mercury in a sealed tube, do not...

Owner's Manual - Page 7

...(s). Wrap the bare end of each other or any other wires. 3. Make sure they do not connect them to your new thermostat. 2. OLD THERMOSTAT Y G C W R LETTER DESIGNATION SCREW TERMINAL WIRE WIRE HOLE DO NOT CONNECT TO NEW THERMOSTAT M22037 7 69-1716 Follow Special Instructions 1. Step 4. If you have C and/or C1 wire(s) connected to your old...

Owner's Manual - Page 8

... counting the C or C1 wires), do not continue the installation. Follow Special Instructions (Cont) 4. You may have two to five wires connected to the old thermostat. OLD THERMOSTAT Y1 G W2 Y2 W1 R LETTER DESIGNATION SCREW TERMINAL WIRE WIRE HOLE SIX WIRES CONNECTED M22038 69-1716 8 Step 4. If six or more wires are...

Owner's Manual - Page 9

... HOLE WIRES NOT CONNECTED - If you find any wires not connected to your old thermostat, do not connect them to your new thermostat. 6. Label and Disconnect Wires from Old Thermostat 9 69-1716 Step 4. Follow Special Instructions (Cont) 5. DO NOT CONNECT TO NEW THERMOSTAT M22040 Step 5. Wrap the end of the wires that are not connected with...

Owner's Manual - Page 10

... WIRE LABEL LETTER DESIGNATION SCREW TERMINAL WIRE WIRE HOLE M22039 When connecting the wires to the new thermostat, refer to wrap a wire label around each wire that matches the letter designation. As ... of the wire. 69-1716 10 Do not allow the wires to your new thermostat based on the color of the old thermostat from the wall. Do not connect wires to fall into the wall opening after...

Owner's Manual - Page 11

THERMOSTAT WALLPLATE WIRE HOLE M22042 11 69-1716 Separate the wallplate from the thermostat as shown. Step 6. Mount New Wallplate to Wall 1.

Owner's Manual - Page 17

New Possible letter designations Thermostat on the next page. 17 69-1716 Connect Wires to read the notes referenced in the numbered triangles above. These numbered notes ... O, B G or F G Do Not Connect C or X, B 4 M22055 Do not connect more than one wire to each terminal. Step 7. Compare letter designations on your old and new thermostats. Be sure to New Wallplate (Cont) 6.

Owner's Manual - Page 18

Connect the old R to the new RC and the old RH to the new R. 3 Do not connect both O and B when wiring to O/B W. M22050 69-1716 18 ...bare end of the terminals, RC or R, will be connected on the new thermostat. 2 If wires were connected to both R and RH terminals on the new thermostat. Connect Wires to New Wallplate (Cont) NOTES 1 If wires will be connected to both RC and...

Owner's Manual - Page 19

Connect Wires to New Wallplate (Cont) 7. Keep wires in the shaded area. Push excess wire back into the wall opening. WALLPLATE RC R Y NOT USED (O/B) W G WIRE WALL OPENING SHADED AREA M22054 19 69-1716 Step 7.

Owner's Manual - Page 20

... two fresh AAA alkaline batteries on the back of the thermostat as marked on the wallplate, the thermostat does not require removal from the wallplate to the enclosed Operating Instructions (69-1722) for more information on the removable battery holder. 20 Step 8. BACK OF THERMOSTAT BATTERY HOLDER BATTERIES M22056 69-1716 After the...

Owner's Manual - Page 21

Step 9. Attach New Thermostat to the wallplate, push the excess wire back into place. 3. Push the thermostat straight onto the wallplate until it snaps into the wall opening. 21 69-1716...fuse/circuit breaker panel. WALLPLATE TABS RC R Y NOT USED O/B W G TABS SLOTS ON BACK OF THERMOSTAT M22057 2. Turn on the back of the thermostat. Align the four tabs on the wallplate with mounting the...

Owner's Manual - Page 22

... five seconds, until the screen changes. Replace Batt Service Needed Cool On Fan System Auto Cool M22058 3. Use the Installer Setup Menu to match your new thermostat to set up your heating and/or cooling system. Replace Batt Service Needed Done Next 69-1716 M22121 22 Follow the steps in this section...

Owner's Manual - Page 23

... this setting if you select your setting for Installer Setup Number 1 in both heating and cooling. After you could turn the fan on your old thermostat.) M22122 23 69-1716 System The compressor Type outside runs in the table below. 5. 10. Configure Installer Setup (Cont) 4. Gas, oil or electric heating without...

Owner's Manual - Page 25

... Next UP BUTTON DOWN BUTTON NEXT BUTTON 3 Fan Heating system Control in controls fan in a call for Installer Setup Number 3 in table below. 11. Heating Thermostat controls fan in a call for heat. After you have a number 3 on the left side of your display, press the Up or Down button to the...

Owner's Manual - Page 27

... to select your setting for information on how to operate your settings. 17. The installation of the thermostat is complete. Press the Up or Down button to exit the Installer Setup and save your new thermostat. Configure Installer Setup (Cont) 15. Congratulations! Step 10. INSTALLER SETUP NUMBER SETTING DONE BUTTON Done Next UP...

Owner's Manual - Page 28

MODEL NUMBER xxxxxxxx DATE CODE xxxxxx THERMOSTAT BATTERY HOLDER 69-1716 M22178 28 Customer Assistance For assistance with your Honeywell product please visit www.honeywell.com/yourhome or call Honeywell Customer Care toll free at 1-800-468-1502. Before calling, please have the thermostat model number and date code available.