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Thermostat does not show temperature and stopped working. but it does turn fan on

No temperature readout, no ac or heat. But fan operates in fan selection but not on automatic

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

SOURCE: heater control wont heat. AC and fan works fine

The heater core was plugged and took 8 flushes to clean it . Would clean it would stop again. Have heat now .
Thank you everyone for helping.

Posted on Sep 20, 2008

  • 2692 Answers

SOURCE: Heater only blows cold air

Yes,it rules it out. The valve leading the water into the heater core is not opening or the door that put the air past or through the heater core is closed. This is general information not specific to your particular model.

Posted on Dec 18, 2008

co7196
  • 3433 Answers

SOURCE: Dometic AC that the fan shuts off but the compressor keeps running

call dometic dealer. I hear they have a bad circuit board that is replaced.

Posted on Jun 02, 2009

SOURCE: 1992 SEDAN DE VILLE CAD...AC BLOWER MOTOR FAN HAS

Since replacing anything could cost hundreds of dollors, would you really replace it from a suggestion or would you prefer to get it diagnosed properly. It gets expensive when you just throw parts at a car. This really need to be diagnosed properly ( hands on with the proper equipment).

Posted on Aug 30, 2009

Testimonial: "thank you"

bargainbin2
  • 123 Answers

SOURCE: 99 saturn no heat or defrost

Sounds like your heater core is mostly stopped up. You need to have your cooling system back flushed and cleaned.

Posted on Sep 12, 2009

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1 Answer

I have a Rheem Classic Super Quiet 80 gas furnace (for heat). The fan stops when the "heat" turns on.


Any time I ever had trouble,first thing to suspect is the thermostat.
They lose contact sometimes and sometimes you tap the face and they work til next glitch.
If the thermostat has some years on it,go ahead and replace it.
Can't you just leave the heat and fan in auto? That would be best,I think. don-ohio

Jan 10, 2017 | Heating & Cooling

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Would a closed thermostat stop the radiator fan from turning on when the temperature is within heat range.it turns on when I turn ac on,is that a different cause when not using ac.


There are two different thermostats--one in the cooling system, and one just to turn on fans. The AC has a separate circuit to turn on fans regardless of engine temp, so tind the the fan thermostat and test it.

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My coolent fan turns off then car runs hot


I would check my relay's and or your fuses first. If thats not it, let it cool down and take it to Auto Zone or somewhere close to have a diagnostic readout done. Good luck.

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Mystery message "wait" appears above "following schedule" display line on our Th8000. Ac does not come on even when temperature is in range. Fan operates ok. Is "wait" setting one I can reset? Maybe a...


Mystery message "wait" appears above "following schedule" display line on our Th8000. Ac does not come on even when temperature is in range. Fan operates ok. Is "wait" setting one I can reset? Maybe a compressor issue rather than thermostat? Thanks

Jun 21, 2010 | Honeywell Electronic Programmable...

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We have the white and rodgers thermostat model 1F81-261. The problem is that the ac unit will not work. We have reset and changed the batteries and set the point 4 degrees less than the actual room...


Set System Switch to Cool and lower setpoint below room temperature.
Verify thermostat and system wires are securely attached.
Diagonistic: Set System Switch to Cool and lower the setpoint below the room temperature. Within a few seconds the thermostat should make a soft click sound. This sound usually indicates the thermostat is operating properly. If the thermostat does not click, try the reset operation ( . If the thermostat does not click after being reset contact your heating and cooling service person or place of purchase for a replacement. If the thermostat clicks, contact the furnace manufacturer or a service person to verify the heating system is operating correctly.

Reset the thermostat by pressing , UP,DOWN and TIME at the same time.

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1 Answer

The high limit thermal switch on heater burns out.


There are two thermostats, a 'limit' or 'operating' thermostat which turns the heating element on and off, and a 'high limit' or 'safety' thermostat which oversees the 'operating' thermostat by opening and removing power to the heating element when the upper limit temperature is reached. Basically, the only difference between these two are the temperature ratings. The 'high limit' is higher than the 'operating' thermostat. The thermal fuse is the last resort protection.

First and foremost, you must know that every inch of your exhaust vent pipe is clean.

Usually, a bimetallic limit switch will degenerate in the direction of too low of a temperature range because as the parts wear out inside, the mechanical tolerance widens (the tiny rod that pushes the contacts together gets shorter).

The high limit thermostat is by the thermal fuse. The operating thermostat is in the blower housing.

Check the fan impeller for broken vanes and lint. The impeller is directly coupled to the motor and should not turn without the motor. The fan housing and ducting should be free of excess lint.

Good luck.

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2000 jeep grand charokee laredo over-heating


have you changed the thermostat? is your fan kicking on? if your fan is not kicking on you need a temperature sensor.

Aug 17, 2009 | 2000 Jeep Grand Cherokee

1 Answer

98 Saturn SL AC/cooling fan will NOT work


Do not let this car over heat a blown head gasket will ensue. Locate and replace the fan relay, if that doesn't fix the problem unplug fan and use jumper wires to ground the plug then feed power to the positive side of plug to check fan, if that doesn't work replace the coolant temperature sensor located somewhere near the intake manifold or thermostat housing area.

Jul 01, 2009 | 1998 Saturn SL

2 Answers

Robertshaw 9600: Temperature rises too high, fan doesn't stop.


It sounds like the thermostat is wired improperly. One quick was to check is by finding breaker to unit and shutting off power. Go to thermostat and remove from wall take all wires off thermostat besides wire going to R(might be RcandRh) and C(which is common) Tape all bare wires removed with electrical tape. Now go back to the breaker and turn power back on. Nothing should be running at all. Take a voltage meter and measure the voltage from R to W(which is heating). If you read 24V then the thermostat is open and not calling for heat. Now turn the thermostat up so it is calling for heat. You should read 0V from R to W. If this checks out your thermostat is probally fine. You can check the fan the same way by going from R to G. In auto you shoul read 24V from R to G and in th on postion you will read 0V from R to G. If the thermostat checks out then the problem is probably at the furnace or rooftop. Either with the thermostat wiring or the main board acting up

Jan 19, 2009 | Heating & Cooling

1 Answer

I have a trane thermostat and I need help programming it


If indeed the program is stopping it you can find out by putting the thermostat temp on a manual hold. Set tstat to a desired temperature then push hold. If all works well then you will need to reset your program to fill your needs

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