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The fan blows but it is not heating. When I set the thermostat for it to click on it doesn't but if I switch to on from automatic it runs but doesn't heat.

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  • Intertherm Master
  • 1,363 Answers

Has a temperture switch that makes fan run. if heat is not working fan wont run unless you put it in on.

Posted on Sep 14, 2015

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Coleman unit, no heat or air, only fan runs.

check for wiring & compresor

Posted on Apr 06, 2009

  • 1151 Answers

SOURCE: Ruud Achiever 10 heat pump - outside fan won't shut off

Definately get this checked out. Some thing has shorted just enough to let voltage "Feed back" and keep the fan running. Could be capacitor, wires rubbed through each other, etc. A reset is a safety that is used when there is an overcurrent or over pressure situation. No reset set for this situation.
There is always an outside chance that if you touch the unit while standing on wet ground, you may get shocked. I firmly believe that something is allowing power to the fan in a feedback condition so don't let this go as it may cause damage to other parts.

Good Luck and let me know how you make out on this.

Posted on May 11, 2009

panilling9
  • 284 Answers

SOURCE: heat pump not running

check your house circuit breakers first that should be labeled heatpump or outdoor unit
make sure it is on and or not tripped
then if you have a box outside near the outdoor unit open it up and see if there is a breaker or maybe fuses that could be blown

Posted on May 26, 2009

joshuaramsey
  • 6 Answers

SOURCE: compresser is not running

The condenser fan motor is most likely blown. A replacement fan motor and a run capacitor are most likely needed to get it back in working order.

Posted on Jun 01, 2009

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

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3 Answers

My Goodman heat pump doesn't blow air through the vents into the house, but the fan comes on when the thermostat is turn on for the air conditioning


Check first that
  • the air conditioning equipment is turned on,
  • the thermostat is calling for cooling, and that
  • the blower unit or air handler is actually blowing air through the ductwork.
Here are the details of what to check in what order if your air condtioner or heat pump doesn't start at all when you set the room thermostat to call for cooling:
  1. Check the Room Thermostat Temperature Setting: Set the thermostat to at least 5 degrees below room temperature. Our elderly mom has no patience with switches and controls. She regularly calls her air conditioning service company with a service request, sometimes late at night, because she has simply failed to set the temperature on the thermostat lower than the room temperature. Don't drive your A/C like our mother.
  2. Check that the Room Thermostat is set to "Cool" not "Off" or "Heat". If the thermostat is not set to "cool" it is simply turning off your A/C. If the thermostat display is blank then it's not receiving power (for modern digital thermostats). Check that electrical power is on at the air handler and to the the low-voltage transformer that supplies power to the thermostat.

    If the thermostat has power, check that when you set the thermostat temperature down at least 5 degrees below room temperature the thermostat calls for cooling. If it doesn't then check for broken or shorted thermostat wires anywhere between the wall thermostat and the control board at the air handler.

    You can easily eliminate possible thermostat problems as a cause of failure of the air conditioner to start by simply eliminating the thermostat from the picture: disconnect the thermostat wires at the blower unit's control board and instead connect the two thermostat terminals directly together with a jumper wire. If the system starts then the problem is in the thermostat itself or in its wiring.

    If the thermostat is working but the compressor condenser unit won't start, you could skip ahead
    to COMPRESSOR / CONDENSER DIAGNOSTICS but I wish you'd double check the remaining steps in this article first because there are some sneaky snafus listed below that might still be the problem.

  3. Check that electricity is on for the equipment. Check all of the electrical switches and controls that can turn electrical power off at the indoor air handler or at the outdoor compressor/condenser unit. There are more of these switches than you might guess. Here's a list of what to check:

    Electrical power switches and service switches outside by the compressor, inside at the air handler, and fuses or circuit breakers in the electrical panel. Don't forget to check that the access covers to the equipment are properly closed and latched. Otherwise a
    BLOWER DOOR SAFETY SWITCH could be keeping the equipment from running.

    There are several other safety switches and controls, both manual and automatic that can leave an air conditioner or heat pump turned "off" such as a blower compartment door interlock safety switch, an electric motor overload or overheat switches, and a condensate tray spillage detector switch.

    Some hard-to-find electrical switches on an air conditioner or heat pump could be keeping your air conditioner from starting, such as
    a FLOAT SWITCH on Condensate Tray that could
    be
    causing CONDENSATE PAN SWITCH LOCKOUT - condensate spilling into an overflow pan that uses a sensor switch can be enough to shut down your air conditioner.
    or
    a blower MOTOR OVERLOAD RESET SWITCH could be keeping a fan motor from starting.

    A bad or failed starter capacitor could also be leaving your system shut down, failing to start a blower, fan, or compressor motor.
    See CAPACITORS for HARD STARTING MOTORS

    Watch out: See A/C - HEAT PUMP CONTROLS & SWITCHES to be sure you have found and checked everymanual or automatic electrical switch on the system.
  4. Check the electrical supply voltage. Even if electricity is on, if the supply voltage has fallen too far below the operating voltage range of your air conditioner it's likely that the system will not operate, particlarly, you may note that the compressor motor won't start.
    See VOLTS MEASUREMENT METHODS

Aug 22, 2017 | Goodman Heating & Cooling

3 Answers

Coleman Evcon furnace blower runs w/ no call for heat. Temp is 5+ degrees above thermostat setting. (Programmable tstat)


When you say door are you referring to the front door or the furnace door? If the unit kicks on AND off by itself I would say it's in the tstat or the tstat wire. If it were internal I would think the blower relay or heat contactor/relay were getting stuck AND THE FAN WOULD NOT TURN OFF until you flipped the breaker. Good luck

Mar 21, 2017 | Coleman Heating & Cooling

3 Answers

I have new blower motor. it dosen't stop running


Could be a bad blower motor resistor,mounted by the blower.

Sep 28, 2016 | 2002 Dodge Ram Pickup 1500

1 Answer

Why do my honeywell thermostat blow cold air?


Either your fan Tstat setting is set to "on" instead of "auto" or your furnace is going off on a limit switch when this happens it automatically runs your fan for safety reasons. Check your Tstat setting then check and change your furnace filter if neither solutions work time to call a pro.

Oct 06, 2014 | Honeywell Heat Only Themostat Yct50k1006-u

1 Answer

Compressor relay switch


What temperature is this heat pump being run at? If it is low ambient temp outside this may be running in what is called defrost mode to where the compressor will run without a call for heat. This seems normal to me as long as the setpoint temperature is being reached.

Dec 25, 2013 | Honeywell Heating & Cooling

1 Answer

My honeywell thermostat will not let the fan blow if it's on automatic


Depends on what type of heat you have...if it is electric, it could be your thermostat (some electric heaters use contactors & rely on the thermostat to switch the fan on). Heat pumps also use the thermostat to switch the fan on in heat & cool mode. Most electric furnaces use a sequencer to switch the low speed of the fan whenever there is a call for heat. Gas furnaces use either a fan/limit controller (if the unit is older) OR a circuit board based on time (after the thermostat calls for heat). SO depending on the type of system you have, it could be a bad sequencer, controller, relay, thermostat, or control board.

Dec 17, 2013 | Heating & Cooling

1 Answer

Thermostat not running furnace properly


Assuming that particular thermostat has a common mercury switch, the wiring behind or just inside the unit may be causing a strong enough magnetic field to throw off the balance of the mercury (liquid metal). The same scenario could be caused by other wiring or devices near the thermostat.
To test this theory, hold a compass as near as possible to the thermostat and wait it to come on automatically. If the needle moves when the switch engages, the magnetic field is strong enough the throw the balance off.


When tucking-in the wires for the thermostat, avoid winding the wires in a spiral or wrapping them around anything. An active current through wrapped or winding wires will create an electromagnetic field.

Oct 28, 2012 | Heating & Cooling

1 Answer

Heater blowing cool air


Is it set on summer switch which is the fan running all the time blowing cold air

Feb 15, 2012 | Heating & Cooling

2 Answers

I have a 1993 yellowstone camper with a coleman wall thermostat. on the bottom of it- it has a heat/cool switch on one side and the other side has a low-high-fan switch. when we run it on low or high it...


These unit are set up for continuous fan operation when turned on. It does not have an automatic position on your thermostat such as in your house. Set the fan speed to what you are comfortable with and let the thermostat control the temperature.

Jul 21, 2008 | Coleman Heating & Cooling

2 Answers

My oven turns off on me after only a minute never heating up fully


Could be caused by either of following;

1. Faulty thermostat.
2. Faulty thermal cut out switch. (controls power to cooling fan).
3. Faulty cooling fan (not fan inside oven).

Test thermostat by setting thermostat to low temperature like 60 oC. If oven gets much hotter then its a faulty thermostat.
To test cooling fan and thermal switch take oven out and remove top or rear panels to expose components.
When oven gets hot the cooling fan should turn on. If it doesn't then check to see if there is a mains voltage present.
If mains current exist but fan is not turning then replace fan. If mains voltage is not present then its the thermal switch.

Jun 19, 2008 | AEG B1180-4 Electric Single Oven

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