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Blower motor on Janitrol heat pump does not blow at a high speed. There are no air flow restrictions.

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CHECK THE BLACK WIRE FROM THE FAN MOTOR TO THE CIRCUIT BOARD FOR LOOSE CONNECTION!.

Posted on Sep 15, 2008

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Amana 80sse furnace fire up work for about 10 min. It goes in lockout and inducer motor stay on


Robert, that is a typical indication of the furnace cycling on its high temperature switch. Look for a dirty filter, return air blockage or any other thing that would cause air flow restriction across the heat exchanger. If nothing else is evident, possibly attempt changing the heating speed to medium low or medium high for heat to improve air flow. But if it worked with no changes prior to this problem, it has to be lack of air flow that is causing the issue.

Dec 15, 2015 | Amana GMH81405DN 140,000 BTU 80% Gas...

1 Answer

Rudd Rheem 1068-311 62-23599-04 board how do I change blower speeds?


psc motors have 4 speeds each colored black blue yellow red and white. there are speed taps on the board labeled heat, cool, even heat/cool and usually Park or M1 male spade fittings for the unused speeds. on the door will tell you speed chart by wire color ie black is high and red is low speed. newer models ask you not to use red for heat. to change speeds is by changing wires and their system mode taps. (beware the push release female end locks into the board) If using black for both and there is a heat/cool tap make sure that the separate taps cool or heat are empty, or motor will receive 120 volts twice. 1 thing to remember a 3.5 ton blower with a 2 ton air cond. wouldn't want to use black too much air flow.
If you have a variable speed its all in the bible for a manual and which dip switch position for cfm air flow.

Jul 01, 2014 | Ruud Rheem 1068-311 Furnace Control Board...

2 Answers

Why does the led on my furnace control bd flash three times


Hello, this indicates a open limit switch. A limit l switch will open when the temp in the heat exchanger gets too high and this switch shuts the Furnace down for safety. Usuaully a dirty filter, weak blower motor, dirty blower wheel will cause a limit switch to open.

Nov 12, 2011 | Air Conditioners

1 Answer

Amana heat pump/AEPF variable spd air handler system works great, but air flow at the higher speed is just too noisy (ducts are not very wide). Is there a way to limit how fast the air handler / blower...


Open the airhandler -should be a speed selector on the main board. If not -checkt he installation/set-up manual. May be some dip switches you can turn on or off to modify blower speed.

Jan 26, 2011 | Goodman CLQ36AR49 Air Conditioner

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I have a ten year old carrier heat pump unit. I recently replaced the indoor tstat. the outside contact and the transformer. Had a tech put freon in the unit also. I have to problems one is the airflow is...


Two things are the most likely culprit. First check ytour inside coil with the unit running for 10 minutes or more and see if the coil is sweating there should be water running off of it. Also after one hour is there ice forming on it. These problems are lack of air flow which is caused by restricted air flow caused by a dirty filter dirty coil (which you have already taken care of) or your blower motor may not be kicking into high speed. Your motor will start and then after it gets to a certain speed it switches to a high speed. After running only 15 minutes if your blower motor is hot to the touch. Be careful some will cook an egg. If it is hot not just warm it is bad and needs to be replaced. Also if the fan is not running properly you can not get reliable readings with your gauges when adding freon. So if this is the problem then you may have to have the units freon cked again. If the line is not sweating at the outside unit where it goes into the unit the freon pressure is not right. The larger copper line will be cold and sweating the small line will be hot to the touch when the system is balanced and running properly. I hope this helps

Aug 23, 2010 | Air Conditioners

1 Answer

I have a Coleman Central Air Conditioner/Heat Pump. On the cooling mode the coils inside the unit in the basement continue to freeze up causing no air flow. I relpaced the filter thinking it might have...


The most common reason for freezing up is 'air flow,' and since you've already changed your filter - have you checked out the coil (the one that cold air comes from) to see if it's clean? If the filter you changed was really 'bad dirty' then it's a good bet the coil could be dirty also - thus restricting the air flow.

If you're satisfied that the coil is clean - about the only other thing it could be - is 'low on refrigerant,' which of course will take a Service Tech to find the leak, repair it and then re-charge the unit with refrigerant.

One other thing you might think about - are you running the blower motor on 'low speed?' If you are then put it on 'high' and see what happens.

Again, the most likely cause of your problem is air flow or 'low load,' - so I would really look hard for an air flow problem of some sort.

hope this has helped a little

Jun 20, 2010 | Air Conditioners

1 Answer

I HOPE I AM USING THIS PROPERLY......MY ? IS IN MY


The indoor blower motor is sometimes a 3 speed motor.The heat usually works on low or medium speed.But the a/c is usually on high speed,this gives greater air flow across the evaporator coil to give you better cooling,also better air flow at ducts.These speeds are usually wired through a relay in the inside unit (air handler).They can be changed.If you go to thermostat and put the fan switch to "on" the blower should operate on "high" speed.With the fan switch set to "auto"the operation will determine the fan speed.Hope this helps. Gregg

Jun 04, 2009 | Air Conditioners

1 Answer

My coleman 3 ton heat pump blows very little air


Check the blower capacitor and blower speed, you probably have a 3 or 4 speed motor make sure it's on medium high or high speed.
If these are ok then shut the power off to the indoor unit and pull the blower housing out so you can see the blower wheel, make sure it's clean and very carefully spin the wheel to see if it spins freely keep hands away from wheel while it's spinning, if it doesn't then the bearings are bad and you need to replace the motor.

Apr 28, 2009 | Air Conditioners

1 Answer

How far from the house should the outside unit be located?


If your outdoor fan is a vertical discharge in other words if the fan blows the air up from the top of the unit then one foot from house is fine, but if it is horizontal discharge or blows it out the side then the airflow needs to be directed away from the house or the unit needs to be moved away from the house far enough that it doesn’t restrict the airflow.
For the blower running on high speed a 4 ton unit is usually 1600 cfm so on low cfm it may seem like high speed. There should be some speed taps on the indoor pc board and if you look in your installation guide it should tell you what taps you need to get the lower airflow if its not correct.
For the luke warm air in the 2 ton mode, the coil is a still 4 tons but the compressor now is only pumping 2 tons of refrigerant so the discharge temperature and head pressure will be much lower and that is what determines how much heat you get, so you will get less heat. The 2 ton mode is for times when you only need a little heat or cool, when you need more then you will get the 2nd stage which is the full 4 tons of heat.

Apr 21, 2009 | Air Conditioners

1 Answer

I replaced my Janitrol 7 wire thermostat with an RTH7500 which now controls my heatpump system. The switches on the Janitrol were cool - off - heat - Em Heat. Does that mean I have auxiliary heat? There is...


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.

Dec 18, 2008 | Air Conditioners

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