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Williamson temp-o-matic central heating system

The blower turns on but very little heat comes out

Posted by Anonymous on

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

Therinnaiguy
  • 1420 Answers

SOURCE: weathermaker 8000 58zav115

The technician sould have replaced the circuit board with part number CESO11057-02 which contains a diagnostic LED that will blink out a code when a fault is senced. If not we have to diagnose the hard and costly way, test each circuit.

There are only a limited number of reasons why the blower would stop running, one being a bad blower relay and another being a overheating of the motor inself causing it to shut off on internal overheat. The relay is part of your circuit board and the overheat is inside the motor, both of which you had replaced. Has anyone checked for a restricted air filter or supply/return restriction? Loose wire?

I'm guessing now. Good Luck and let us know what you find.

Posted on Jan 23, 2008

22yooper
  • 828 Answers

SOURCE: My central heating system comprises

You could possibly have an ignition problem. The controller will go into a lock-out condition if flame is not established. Turning the temperature control down and then back up may be serving to reset the control system so it tries again.

Posted on May 22, 2008

  • 1 Answer

SOURCE: 10yr Vulcan Central Heating unit.

I have the same problem, heating unit will not ignite, it trips out, i go into the roof cavity and remove the top of the unit (4 screws) and there is a motherboard, it has a Green light flashing what tells you the type of fault it has, mine has 3 Flashes telling me it a combustion air pressure system failure, ithen push the reset switch and it starts to initiate, a red light comes on and then it ignites and it will work for about 30 minutes to an hour and a half.

Hope this helps
Shane

Posted on Sep 20, 2008

Therinnaiguy
  • 1420 Answers

SOURCE: Carrier 58MVP; Blower on, no

A code 12 is "Blower on after power-up" Try resetting the furnace with either the Emergency switch or circuit breaker. If it continues, you may need a new control board.

Posted on Nov 28, 2008

diths_kri
  • 67 Answers

SOURCE: central heating HVAC blows cold air -

stat or low battery in tstat

Posted on Jan 07, 2009

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1 Answer

20+ year-old Williamson Temp-O-Matic furnace makes sound like a overly-full tumbling clothes dryer lately. Is something wrong? What might it be? Thanks!


Dear Anonymous,
Is there a possibility you have a furnace, not a clothes dryer?
If so, it sounds like you have something ( dirt? lint? expired varmit?) in or on your squirrel cage blower fan.
Someone will need to that the furnace apart and see what is going on inside.
Summertime is a good time to do furnace "maintenance service".
God bless your efforts.

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well the ac compressor will come on if you have it in defrost mode,if heater is blowing cold ,after you just had thermostat replace ,you could possibly have air in system.now if your heater motor is not working which is called the blower motor under dash it could be the resistor that controls it also these rigs have been known for wire harness problems at heater control unit and the blower motor connector.good luck,mike

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Goodman gph1348m41ac unit is blowing cool air in heat mode with mid 30s ambient outdoor temp. I turn it off then on and will usually blow warm air but this cycle is becoming more repetitive. any expert...


A heat pump on the optimal heating day (about 50 degrees ambient) will only deliver approximately 85 degree air as compared to 125 degree air from a fossil fueled furnace. The colder the outdoor air is the less heat there is available to be transferred to the living space. At 30 degrees, the heat transfer capability is getting close to negligible meaning the run cycles will be approaching continuous and eventually as the heat pump along cannot maintain setpoint, the outdoor stat or stats will bring on auxilliary heat in the air handler.

If your ambient temp is below the 'balance point' of the heat pump, the house temp will drop a little lower and most times energize the heat strips through the outdoor t-stat. Your outdoor stat could be set too low for the heat pump to carry the structure all the way down to the balance point so when you turn it off and back on, the lower indoor temp automatically brings on the heat pump plus a heat strip or two, thus the warmer air. Second stage on the stat satisfies due to the heat strip, drops them out of the circuit and the heat pump is left running on first stage heat delivering the perceived cold air.

Your outdoor stat could also be not functioning correctly and not allowing the heaters to come on until the system is turned back on reestablishing the two stage call for heat.

Tons of possibilities and not enough room to list....

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1 Answer

I have central heat and air system, my problem is when in heat it runs for 10-15 min. turns off and about 20 seconds later starts back up. It shts off before hiting its tstat. temp.


If this is a gas furnace and you have a cooling coil on top then you could have a dirty coil. Also a dirty air filter can do this. I have also found dirty blower wheels. The gas furnaces have a high limit to prevent the heat exchanger from over heating. Another possibility is always a possibillity; however, 99% of the time I find an air flow issue.

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it should. the transformer,110v to 24v should be part of a 40 yo furnace. if not just find that tranformer and add power to it also

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1 Answer

Central heat won't turn off instantly.


yes it is normal. the blower continues to run after the heat turns off to cool the system down.

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1 Answer

My honeywell central heating system turns off on its own. I set the room temp., the heating system reaches that temp then just turns off. The temperature drops and the system does not kick back on again to...


Hi, Just to let you know I have repaired central Heat & Air systems for 33 years and Have seen this problem on many occasions. Lets see if I can save you so many trips.It says you have a programmable stat? On this stat and on a mechanical stat, they have what is called a heat anticipator that controls how many and how often your thermostat turns you're unit off and on and how long it cycles after the stat is satisfied. If you have ever seen under the cover of a mechanical stat, ( mercury switch type) you will see a dial with an arrow with numbers as .1, .3, .4 1.0, or .15 to 1.0 amps.Some are fixed and some are adjustable. On a digital stat, you will have to get into the program and see what the heat anticipator is set on. They come from the factory at .4, but to really find out what you'res should be it takes an amprobe to do this. The setting you need is what you're gas valve requires.I am sure I have lost you, but I am just giving you a little food for thought. If you can get into you're program and set this to .4, great. If the problem continues, your anticipator on this stat is more than likely, shorted, which would require you to buy a new stat.With a shorted anticipator, it will seem to be working like you say, but when satisfied, the temp.keeps falling until you reset power, then it fires and repeats this. Change the stat. If this is central heat and air, just follow red-rc which will have a red jumper to rh for heat, white to w, green to g=fan, and yellow or blue to y = cooling. If you have central heat only, you will find 2 wires red and white.Red to rh with jumper still installed to rc and then white to w.This is quite a long explanation, but I wanted you to know a little more then the next guy about your stat. Please let me know.
Sincerely,
Shastalaker7

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Bosch Worcester boiler, central heating not working


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There should be electric heat strips in the airhandler.

They automatically come on when the unit goes into defrost, the thermostat is turned up more than 7 degrees over the indoor temp or if the outdoor temp is just so cold the HP cannot keep up.

Tat is your auxillary or emergency heat.

What does the new t-stats installers booklet say that the 0170 function and #2 #7 options are for?

If it is for gas vs elec heat then set it on the elec option.

The difference is that in gas heat systems the blower comes on a few min AFTER the furnace fires up to allow the heat exchanger to get hot.
In an electric furnace the blower has to come on emediatly because the heat strips get hot emediatly and if the blower is delayed the system will shut of in high temp overload.

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2 Answers

Central electric heating system


Hi,
please check the capacitor if this a low capacitance or not functioning use the capacitor tester to check the reading,this one of the problem of your case,thanks


Regards ,
Edgz

Feb 15, 2008 | Heating & Cooling

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