My home furnace is currently controlled by a programmable Honeywell thermostat, but it regularly thrashes the furnace by turning the furnace on for just ten or twenty seconds. It seems that the thermostat will register a one-degree drop in temperature for a few seconds, turning the furnace on, but then switch back up to the previous temperature a few seconds later, turning the furnace off again. Presumably, air currents near the thermostat produce rapid swings in temperature of around one degree. After some investigation online, it seem that what I need is a thermostat that supports 'variable swing' or ' -- that is, heat to a given temperature (e.g. 25 degrees), then let the temperature cool to a different temperature (e.g. Apparently Honeywell thermostats do not support this.

Which thermostats allow a temperature range to be programmed? I don't want to spend hundreds of dollars on a smart thermostat; a simple and cheap programmable thermostat would be ideal. Update: the thermostat is a Honeywell Pro TH4000 series, most likely a TH4110D. Defective thermostat certainly seems like the most likely option here, so probably any reasonable programmable thermosat will work more correctly than this, no need for fancy and pricy 'smarts.' One possible solution would be to insert some time-delay relays into the loop to enforce minimum on/off times. A simpler one would be to replace with a more functionally correct 'stat. Even the old mercury bimetal stats had sufficient hysteresis to keep this sort of thrashing from happening.

It's also possible that your current 'stat does have adjustments that are mis-adjusted which would help with this. Whether or not you could find documentation on them I don't know, and you have not mentioned a model number. If you pop it off the wall and have a look at the back you might see something, or you might get lucky if you look the model number up online. Often older stats will have somewhat obfusticated terminology intended to keep you calling your heating guy rather than adjusting it yourself. If your heating guy wasn't too bright this could backfire (after all, he knew how to adjust a mercury 'stat, so why learn anything new? Followed by the 'newfangled junk' not working, just as he predicted while throwing the directions in the trash.). I have the same problem.

Set to 60°F it will fast cycle 15 minutes on at 60°F, and 10 minutes off at 59°F. So I called Honeywell. Their answer: build a custom thermostat that has an 'anticipator circuit', with hysteresis like the old Mercury thermostat. 'All Honeywell thermostats have a +-1°F or +.5°c and are not adjustable' said tech support. I did a test. With my gas forced air furnace and my Honeywell RTH221B thermostat, I set the switch on the back to water water/electric, instead of gas /oil.

May 15, 2015. The Robertshaw RS3100 thermostat is Simply The Right Choice when it comes to programmable temperature control that can help reduce energy costs up to 25%. With the comfort, convenience, and efficiency features that homeowners and contractors want. Simple touch button controls to set weekly. *When the thermostat is in Auto Recovery mode, the display will alternate 'RECO' with time and the program indicator will flash. *Auto Recovery can be disabled by sliding the Recovery switch on the circuit board to disable. (this is located inside the thermostate) *Auto Recovery can be cancelers manually if.

Result: with set point at 68°F, it will turn on at 67°F, and off at 71°F. I believe this is the fix you were looking for, unless you have a heat pump. Gumby stay flexible. I know this is old, but it is surprisingly hard to find this information on the web.

I had the same problem with a Honeywell thermostat in my old apartment. It was located by the door and the temperature at that location would change by a degree frequently, which was a major problem because my forced air heat was very loud. I spoke to Honeywell and they do not make products with variable swing, so I went to a different company. One solution for you is LUXPRO PSPA711a It has a variable swing that can go between 0.5 and 4.5 degrees (the 0.5 is marked as.25 because it starts heats when the temp is 0.25 degrees below the set temperature and shuts off when temp is 0.25 above). Varnam Movie Download here.

This worked for me and I believe Lux makes other thermostats with variable swing so check out their models. I ended up not liking this thermostat because each day has 4 different periods temperature settings, and everyday is programmable. If you want to change the weekday temperature, you have to sort through 28 different periods and adjust 5 of them. Works for people that need to adjust each day, but this was overkill for my needs. Lux doesn't always highlight that variable swing in the product description, so read the manuals.

1 2 3 4 6 5 7 8 9 10 11 12 13 15 14 16 17 18 19 20 21 22 24 23 25 26 27 REPAIR, REPLACEMENT, OR CREDIT OF THE PURCHASE PRICE, AS PROVIDED HEREIN, SHALL CONSTITUTE THE SOLE REMEDIES WITH RESPECT TO DEFECTS IN THE PRODUCTS. THE CONSUMER ASSUMES ALL RISKS AND LIABILITY FOR INCIDENTAL AND CONSEQUENTIAL DAMAGE RESULTING FROM INSTALLATION AND USE OF THE THERMO- STAT. Some states do not allow the exclusion or limitation of incidental or consequential damages, or allow limitations on how long an implied warranty lasts, so the above limitations or exclusions may not apply to you.

This Warranty gives you specific legal rights, and you may also have other rights which vary from state to state. For Warranty returns, send the thermostat, shipping prepaid and proof of date of purchase to: Invensys Controls Warranty Claims Department 515 S. Promenade Ave.

Corona, CA In Canada: Invensys Controls Warranty Claims Department 3505 Laird Rd. Unit #14 Mississauga, Ontario L5L 5Y7 Canada TWO YEAR LIMITED WARRANTY Invensys Controls warrants to the original contractor installer, or to the original consumer user, that each new Robertshaw thermostat will be free from defects in materials and workmanship under normal use and service for a period of two (2) years from the date of purchase (the “Warranty Period”).

If any Product fails within the applicable War- ranty Period, Invensys Controls shall, at its option, repair or replace the Product or credit the purchase price, provided the Product is returned to Invensys Controls’ facility or designated agent within the Warranty Period, with transportation or postage charges prepaid and proof of the date of purchase, and the Product, upon examination by Invensys Controls, is found not to conform to the Warranty. Cost of Product removal, labor, or reinstallation of new Product are not covered under this Warranty and are not the responsibility of Invensys Controls. War- ranty on Products, parts and/or components sold, but not manufac- tured by Invensys Controls, shall be expressly limited to the warranty terms of the manufacturer of such products, parts and/or components. The above warranty does not apply to: i) batteries; ii) defects or dam- age that result from use of the Products in any manner other than their normal and customary manner; iii) defects or damage that result from use of the Products in any manner other than in accordance with Invensys Controls’ recommendations and instructions; iv) defects or damage which occur from misuse, alteration, accident, water, fire or neglect; and/or v) defects due to abuse or damage such as burned contacts, stripped threads, split castings, improper installation or missing parts. THE FOREGOING WARRANTY IS IN LIEU OF AND EXCLUDES ALL OTHER WARRANTIES, WHETHER EXPRESS OR IMPLIED, INCLUDING THE IM- PLIED WARRANTIES OF MERCHANTABILITY, TITLE AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL INVENSYS CONTROLS BE LIABLE TO CONSUMER, CONTRACTOR OR ANY THIRD PARTY FOR ANY CONSEQUENTIAL, INCIDENTAL, SPECIAL, EXEMPLARY, OR PUNITIVE DAMAGES ARISING FROM OR RELATING TO USE OF THE PRODUCT INCLUDING, BUT NOT LIMITED TO, LOSS OF GOODWILL, LOSS OF PROFIT OR REVENUE, AND PROPERTY DAMAGE, REGARDLESS WHETHER SUCH LOSS OR DAMAGE IS BASED IN CONTRACT, WAR- RANTY, TORT, NEGLIGENCE, STRICT LIABILITY, INDEMNITY, PRODUCT LIABILITY, OR OTHERWISE AND EVEN IF INVENSYS CONTROLS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Lock Keypad The keypad can be locked to disable the buttons on the front panel.

The two switches will continue to function. To lock the keypad, press the HOLD/ RUN button for 5 seconds. The lock icon will appear on the screen. To unlock, press the HOLD/ RUN button for 5 seconds. The lock icon will disappear.

TROUBLESHOOTING Problem Solution Scrambled or double display (numbers over numbers). Remove clear mylar sticker. Check connections and batteries. Press Reset once with a small pin and hold for two seconds then reprogram.

Entire display dims. Replace batteries. Auto/Fan does not turn On. There may be as much as four minute delay before the heat or cool system turns on. Wait and check. (Compressor protection delay). Check your circuit breakers and switches to ensure there is power to the system.

Replace batteries. Make sure your furnace blower door is closed properly.

Check the position of the furnace or Heat Pump selector switches. Erratic display. Press Reset once with a small pin and hold for two seconds then reprogram. Thermostat reads E1. Temperature sensor defective. Replace unit.

Thermostat reads E2. System switch in wrong position. Move system switch to correct position. If you experience any other problems, contact Technical Support at: www.invensyscontrols.com or (800) 445-8299. Permanent Override It is possible to set a temperature and hold it for an extended period, such as a vacation. • Press and release the HOLD/RUN button.

HOLD will flash on the display. • You can use the UP and DOWN arrows to select a set temperature. The set temperature will be held until canceled. • To cancel the permanent override, press and release the HOLD/ RUN button.

The word SCHEDULE will appear on the display. Home Today This feature allows you to quickly and temporarily override your program settings for a day with just one button. • Press the HOME TODAY button to enter the Home Today override. When in Home Today mode, the thermostat will use the default temperature setpoint.

• The display will show HOME TODAY. • The thermostat will remain in Home Today mode until the first program of the next day. • If the system is changed between HEAT and COOL modes during the Home Today Override period, the setpoint temperature will automatically update. It will automatically change from the lowest cool program setpoint to the highest heat program setpoint.

• Press the HOME TODAY button to exit Home Today mode before the schedule ending time. HOME is no longer displayed on the LCD screen, and the thermostat returns to the current program settings.

• You can manually change the setpoint temperature while in Home Today mode. Refer to the Temporary Override instructions.

Changing the set temperature while in Home Today mode will not affect the Home Today ending time. However, the set temperature will not change automatically with a manual or automatic change between heating and cooling. OPERATION System Selector Switch system cool off heat auto The System Selector switch on the front of the thermostat determines the operating mode of the thermostat. You may select COOL, OFF, HEAT or AUTO (RS3210 only). NOTE: Anytime you install or remove the thermostat from the wall- plate, slide the System Selector to the OFF position to prevent the possibility of a rapid system on-off. Auto Changeover (RS3210 Only) Auto changeover is the ability of the thermostat to switch automati- cally between heating settings and cooling settings. This is useful in spring and fall when the days are warm and the nights are cool.

In heat mode, if the room continues to warm beyond a set threshold, the thermostat switches to the cool mode and the associated cool set- tings. Likewise, in cooling mode, if the room continues to cool beyond a set threshold, the thermostat switches to the heat mode and the associated heat settings. As the room temperature changes, the thermostat will call for heating or cooling as needed. To prevent the heating and cooling systems from overriding each other, an automatic changeover deadband is used.

The deadband is the number of degrees that the room temperature can vary from the active setpoint until heating or cooling is called for. The larger the deadband the more the room temperature will vary. Fan Switch fan on auto The Fan switch should normally be set in the AUTO position. The fan will be turned on along with normal operation of your system. In a normal gas or oil furnace, the fan will be turned on by your furnace after its warm-up delay.

For electric heat, air conditioning, and heat pump operation, the fan will turn on with the system. To run the fan continuously, slide the Fan switch to the ON position. Temporary Override To temporarily change the current set temperature without affecting your program, follow these steps: • Press the UP and DOWN arrows to change to your desired new temperature. • After 15 seconds the display will return to the normal run display. At the next program change, the Temporary Override is canceled, and the next program temperature becomes the setpoint temperature. Once you have determined your Personal Program Schedule, you need to use the instructions under Weekday/Weekend Programming to en- ter or revise your program settings at a later date. BEFORE program- ming your settings, there are several important guidelines and helpful hints to follow.

• The program time can be set in 1 minute increments. This setting will be the same for both HEAT and COOL programs. • The program temperature can be set in increments of 1ºF (1ºC). • The heat setpoint cannot be set higher than the cool setpoint, and the cool setpoint cannot be set lower than the heat setpoint.

• If the system selector is in AUTO mode, the current system operating mode ( COOL or HEAT) will be programmed. • After 15 seconds without a button press, the thermostat will return to Normal Display mode. • When setting the program time, note the AM/PM indicator and make sure the right one is displaying for the setting. Cavalerul Nopti Film Serial National Tv more. Weekday/Weekend Programming: To program the thermostat, start with a normal running display. Select COOL or HEAT.

Press the PROG button and hold for three seconds. Flashing at the top of the display will be the Weekdays or the Weekend days. You can press the PROG button to change between Weekdays or Weekend days. On the left side of the display, Morn will be shown. Press the PROG DAY button to select the programs for Day, Eve, Nite and back to Morn. After selecting one of the four programs, you can press the HOUR and MIN buttons to select the time for the program to start.

Use the UP and DOWN arrows to select the temperature for this program. Press the PROG DAY button to move to the next program. Repeat steps 4 through 7 for all four programs for weekdays and weekend days. Switch between HEAT and COOL. Start with step 2 and repeat steps 4 through 7 to set the four programs for weekdays and weekend days. • Press the AUTO PROG button once. The word Auto will display.

• View the settings for all seven days of the week in the thermostat display. These setting should match the table shown below. Temperature in F° (C°) Program Number Time Heat Cool 1 Morn 6:00 am 68°F (20°C) 78°F (26°C) 2 Day 8:00 am 60°F (16°C) 85°F (29°C) 3 Eve 4:00 pm 68°F (20°C) 78°F (26°C) 4 Nite 10:00 pm 60°F (16°C) 85°F (29°C) Manual Programming You can change the default thermostat settings and program your own settings for weekdays and weekends.

Before programming or changing programs, use this Personal Program Schedule provided here to determine which times and temperature settings will best satisfy both your comfort and energy saving requirements. Use a pencil so you can revise your records each time you change your temperature settings.