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I have got a Siemens rev12 thermostat for heating system, set 2 heating periods and every time I press auto, heating comes on even tho not within one of those heating periods???

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Blower fan will not come on when set on Auto in heat mode.

the fan is controlled by a fan center or a stack switch. as burners light and heat up the spring sensor on the bulkhead above burners heats up and turns and a a point energizes the indoor fan if it gets to hot the burners go out on safty. sounds like a fan control is bad tap on them gently and they sometimes break loose but if not then have a pro replace fan control and test heat exchanger.

Posted on Oct 24, 2008

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SOURCE: air conditioning runs all the time

I assume this is a manufactured home, this is probably a two transformer system, either your contactor is welded in the on positon or wyou have control wiring issues, (could be the thermostat)

Posted on Jul 12, 2009

  • 29 Answers

SOURCE: Outside unit runs continuously, even when system is off.

On A/C units, there is a low voltage line that leads to a contactor, which engages to close the high voltage circuit to the condensor unit. Over time, the accual contacts in the contactor can weld themselves together. Try shutting off your furnace breaker but leaving on the one for the outside condensor unit. If it still runs, your contactor probably needs replaced. Contact a licensed electrician or HVAC contractor and tell them you think your contactor is in need of replacement. Is a fairly simple and quick replace, but the contactor itself is not cheap.

Posted on Oct 10, 2009

Therinnaiguy
  • 1420 Answers

SOURCE: Hello We have a Trane central air

Bad thermostat, improper wiring or bad circuit board in furnace. Turn off the disconnect outside.

Posted on Dec 30, 2009

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How do I program the Venstar T1010 digital thermostat. I did not receive a manual with it.


Venstar has the documentation for the T1010 thermostat on their Small series (Residential) support page: http://venstar.com/thermostats/small-series/literature/ . The direct link to the user manual is currently http://files.venstar.com/thermostats/small-series/documents/T1010ManualRev1.pdf .

To set the time, press Mode and Fan at the same time and hold for 2 seconds. This will put the unit into set up mode. Use the up/down arrows to change the currently flashing item. Press and hold Fan while pressing either the Up or Down arrows to quickly change the item. Press Mode to move between time sections. After you advance to the section for heating/cooling mode, you can press Mode to change between the available options. Press and hold Mode and Fan to exit this setup area.

Press and hold Mode and the Up arrow for 2 seconds to program the timed heating or cooling intervals and temperatures. Press Mode to move between time period, desired temperature for heating or cooling for that time interval and the next time period. Use the Up/Down arrows to change each section. When finished, press and hold Mode and the Up arrow to exit.

I hope this helps.

Cindy Wells

Aug 12, 2017 | Heating & Cooling

Tip

Air Conditioning Programmable Thermostats - Great for Heating and Cooling


Programmable thermostats contribute to overall system performance, maximizing energy savings while providing complete comfort control. They also allow flexibility to homeowners because they can be programmed to match their lifestyle. Programmable thermostats save energy by turning down the cooling and heating system at night or at times when your home is typically unoccupied.


Did you know that properly using a programmable thermostat in your home is one of the easiest ways you can save energy, money. Homeowners can save about $180 a year by properly setting their programmable thermostats and maintaining those settings. They can achieve significant energy and money savings that are possible through the proper use of your programmable thermostat. Programmable thermostats do two things:
(1) Compare the thermometer reading of a room's temperature to the "ideal" thermostat temperature you select.

(2) Give start-and-stop commands to the heating or cooling system in order to achieve an indoor temperature that is as close to your "ideal" thermostat setting as possible.


Your savings will largely depend on the length of your energy saving program periods and the temperatures set. For example, an energy saving period of 10 hours with the temperature set back 10° will save more than a 5 hour energy saving period with the temperature set back 5°. By maintaining the highest or lowest required temperatures for four or five hours a day instead of 24 hours, a programmable thermostat can pay for itself in energy saved within four years.

A programmable thermostat will keep you and your home comfortable while you are there to enjoy it, and will change the set point at programmed times to an energy savings level when you are not home. The precise temperature control of a programmable, energy-saving thermostat saves wear and tear on high-efficiency heating and cooling equipment by properly cycling the equipment. A programmable thermostat will keep you and your home comfortable while you are there to enjoy it, and will change the set point at programmed times to an energy savings level when you are not home.


Controlling your heating more effectively could save you up to 17% on your heating costs. In fact, during the winter you can save about 3 percent of your heating costs for every degree you lower your thermostat. Begin lowering your heating bill immediately with the pre-programmed 7-day schedule, or modify the programming to suit your lifestyle. By delivering the heating or cooling when you need it, and optimizing temperature for activity, sleep and times you are away you can maximize your comfort level and save energy.

http://www.fixya.com/support/r3894275-manual_honeywell_find_honeywell_manuals

http://www.fixya.com/support/r3916016-honeywell_th8320u_thermostat

http://www.fixya.com/support/r3913560-honeywell_th8110u1003

http://www.fixya.com/support/r3902153-honeywell_rth7500d_thermostat

http://www.fixya.com/support/r3898732-lux_thermostat_500

http://www.fixya.com/support/r3869033-replacing_thermostat

http://www.fixya.com/support/r3623083-thermostat_wiring_terminal_designations

http://www.fixya.com/support/r3623166-heating_air_conditioning_scams

http://www.fixya.com/support/r3584298-air_conditioning_programmable_thermostat




on Dec 06, 2009 | Heating & Cooling

1 Answer

Siemens rwb29 controller doesn't work properly. central heating comes up only when you select hot water, but not on its own


This happens to my rwb29 from time to time. You can try switching off the power to the controller for a couple of minutes with CH thermostat and CH programs set off. Or you can press the little reset button to the bottom right of the LCD screen. After 1 or 2 attempts these steps usually restore the independent control on my unit.

Nov 05, 2012 | Siemens RWB29

1 Answer

I have installed a new adjustable thermostat unit (E1-BCANRT1W). Temp is set at 91 deg and I am using the timer. Two time periods are set and the switch is set to timer (not ON). The unit comes on at...


Double check your slide switch.
For timer: set switch to TIMER
For thermostat: set switch to ON
If slide switch does not operate, then Autocirc may be defective

Laing (800) 554-6853
http://waterheatertimer.org/pdf/Laing-E1-E3-E10-install-instructions.pdf
http://waterheatertimer.org/pdf/Auto-circ-manual.pdf
http://waterheatertimer.org/Water-heater-recirculation-system.html

1) Household AC wiring will not affect the timer.
You can check your outlet using cheap circuit analyzer from home center.
The clock rotates one direction and the pins push small lever down which turns motor on-off.
When the OFF pins pass, the small lever snaps back and the motor turns ON.

I cannot immediately find operation manual for the E-1 model.
Typical ACT303 auto circ manual says following:

2) If timer controlled operation is desired, set timer and move slide switch to TIMER:
Manual says: tabs/pins are outward for ON times.
Another sentence says UPWARD, so I don't know which way the pins are set for sure.
So if you want timer ON for 2 hours, you would set 4 consecutive pins outward or upward.
ON for 6 hours, set 12 consecutive pins outward or upward.
If the timer turns ON in reverse of instructions, then set the pins that way.
Autocirc does not make the timer, they buy timer modules from clock-makers like Grasslin, Intermatic, etc.

3) To operate Autocir thermostatically without the timer, slide switch to ON position.
The clock dial will continue rotating

Apr 14, 2011 | Laing Thermotech Autocirc Undersink...

1 Answer

Have installed a new Honeywell thermostat. The fan does not turn off even when the room has reached the desired temperature. I originally replaced th ethermostat because the old one the fan ran forever and...


Most T-Stats have a On / Auto on a forced air system. On means the fan will run all the time even if it is not calling for heat. Auto only runs when calling for heat. Does the fan turn off in the auto mode at all? To test it...BE SURE THE FAN IS IN THE AUTO MODE ON THE T-STAT... Turn the thermostat all the way down and keep it there for appox 15 mins. If it is wired properly and the fan limit is set properly the fan should turn off. If it doesn't it is not the thermostat were the problem lies.

Most forced air units have a fan / high limit switch. There is a setting on the switch for the fan to turn on and a setting for the fan to turn off or it has a setting and a differental switch for it to turn off/on. Example - the fan comes on when the temp in the heat exchanger reaches 110 degrees F and will shut down at 95 degrees F after the thermostat is satified...this would hav a differental of 15 degrees F. It may be set to low and the fan continues to run long after all of the heat has been removed from the heat exchanger. This in turn will cause cool air to be coming out of the registers.

Mar 09, 2011 | Honeywell CT87B ROUND HEATING&COOLING...

2 Answers

I have just had a new boiler fitted and wanted to run the thermostat (honeywell cm921) on auto, the electrician set the timer to come on at 1 & off at 2 disabled at 3 & 4 and on again at 5 and off...


Complicated because I need more info....but in General a Boiler should not be on a Programmable Thermostat as it takes too long to heat etc...do you have Radiators in your house???Or ductwork for heat???It will make a difference...if you put the boiler on a program it may come on anyway as some boilers maintain there own internal temperature regardless of the thermostat.....if you want to run it on a program adjust the temperatures so there is only about a 2 degree swing....70...down to 68....back to 70.....etc...there should also be a switch in the thermostat to set for Boiler...or Electric heat...make sure that switch is on...otherwise its difficult to give you a more conclusive answer

Nov 11, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Lost my manual for chef condor integra oven - need to check auto functions and how to set them


For TOuch Control oven:
1. Press Finish Time touch pad
2.press ^ touch pad until clock displays the required am or pm finish time.
3. Press Cook Period touch pad.
4. Adjust the cooking time as in step 2, using up and down arrow touch pads. (hours and minutes needed to cook food)
5. Press Automatic touch pad.
Press Fan touch pad to select fan speed. Red indicating light shows normal speed.
7. Turn oven thermostat to desired setting.
8. Press Keep Warm touch pad if keep warm function is required at end of cooking. 9. At end of cooking time a buzzer will sound for 1 minute and the KEEP WARM cycle will now operate until the meal is ready to be served.
10. To cancel the Automatic cycle, press Manual touch pad and turn oven thermostat off.

For Multifunction oven:
1. Set time of day.
2. Turn Function switch to Finish. 0.00 will be displayed.
3. Turn display switch + to give the required am or pm finish time. (an illuminated bar in the bottom left corner indicates when the clock display is pm).
4. Turn Function switch to Cook then turn Display switch to + till desired cooking period is displayed (hours and minutes needed to cook food)
5. Turn Function switch to Auto. The automatic programme is now ready to use.
Turn upper oven thermostat to desired setting.
If keep warm function is required, turn function switch to Cook (optional)

Happy cooking!

Jun 14, 2009 | Ovens

2 Answers

My air handler comes on ,not the outside unit when my thermostat is in the off position even if i turn the thermostat down to 50 and have it turned off the air handler comes on for about 5 to 10 minutes...


If you have a standard thermostat the fan switch is for the air handler only. It completely over rides the thermostat for most settings. Now lets see this is what I'd expect:
fan switch on Indoor fan runs all time
Fan switch auto Indoor fan only runs when thermostat is set to cool or heat and the thermostat is turned up above room temp for heat or below room temp for cooling. In both of these modes the furnace blower comes on and stays on til the room temperature is satisfied. The outdoor unit only comes on for AC the out door unit will not come on for heat or the "on" setting on the thermostat. See exception 1 & 2 below...

Exception 1- (in a heat pump the out door unit runs in both heat and cool mode unless it has emergency heat turned on then it will not come on outside in the heat mode, and depending on the type of heat pump and furnace or air handler it is). A heat pump thermostat usually has "backup heat" and an "emergency heat" setting switch on the thermostat.
Exception 2 - On some thermostats they are made to cycle on the heat if the temperature reaches a preset temp (around 50'f usually but definitely by 40'f). This mode prevents freezing when if instance the homeowner is away or while the home is under construction. In this mode the fan inside can run but the heat usually comes on with it.
Exception3 - On some electric furnaces the heating strips may be individually controlled and thus not all come on at one time. This may give the feel of no heat especially if the room is cold.

Now there may be other exceptions but Ive tried to give you a heads up on some of the most common ones.
If you need more help please post more specifics about your unit/system as to for sure what switches are set to what setting and what is happening with each. My first though was that maybe your system is OK and you needed to know if the thermostat was working properly.

If this helpd you understand your problem would you please give me as hifgh a mark as you can. Thnaks for using fixya and good luck.

Mar 28, 2009 | Carrier Heating & Cooling

1 Answer

Forced Hot Air Heating system doesn't maintain thermostat setting


It sounds like you may have issues with the furnace. A qualified professional can go over the system and the house to let you know if the system and unit are properly sized. The poor performance of a furnace can be a sign of carbon buildup in the furnace.
Good luck, hope this helps.
Matt

Jan 10, 2009 | Honeywell Focus 6300B 5-2 Days...

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