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Want to run the above motor at a constant speed on 120 volts for a blower motor

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Motor will only run in time with the compressor

Posted on Mar 25, 2011


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Coleman evcon ignites but hardly any heat at vents blower motor workin constantent running

Dirty evaporator coil, dirty air filter, weak blower motor windings, weak blower motor capacitor, wrong blower speed, leaking or broken ductwork, uninsulated ductwork, gas valve pressure needs adjusting(low fire)? Might be any or all of the above.

Nov 02, 2017 | Coleman Heating & Cooling

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Blower shuts off but ac continues to run. done changed board ,blower motor and stat but furnace does not have a ground in the 120 volt line

Your blower motor may be overheating/overamping which will cause the internal overload inside the motor to open. Like a switch in the motor that prevents in self from catching on fire or shorting out. This can be caused by a dirty evaporator coil, improper wiring (2 speeds running at the same time) or improper voltage, wrong horse power motor, whong capacitor, dirty blower wheel. Something causing motor to stress during operation.

Jun 06, 2015 | Heating & Cooling

1 Answer


Do you have 120 volts applied to the motor? Try spinning the blower wheel by hand, if this getsbthe motor running the capacitor must be replaced. If there is power to the motor and does not start up, the motor will have to be replaced.

Dec 12, 2012 | AO Smith Nordyne Furnace Motor 1/8hp 1050...

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Hi I have an goodman model capf036a2a furnace and I have replaced the capacitor and blower motor. When I turn on the heat the furnance lights and runs but the blower motor doesent start which trips its...

Verify if you have 120 volts from the control board. Easy way to check is to bypass the board, you can do this by using a small wire and jump the L1 wire with the low speed motor wire, if the motor starts up the board is bad and will need to be replaced. You can also use a meter and check voltage between the low speed motor wire and the Common wire which is typically white in color. If you do not have voltage the board is bad.

Nov 28, 2012 | Heating & Cooling

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The blower does not turn on, so there is no heat. I don't know if its the blower motor that is out or if it is something else.

Hello. the first thing to check with a multimeter is if you are getting voltage to the motor, you should get 120 volts at the low speed motor tap on the control board and the neutral terminal. If not the control board is bad and must be replaced. If you have 120 volts there then the next thing to check is the capacitor, to check a capacitor you need to discharge it first and then set your meter to OHMS, and take your meter and put each probe of the meter to the capacitor terminals, the numbers on the meter should ramp up and down if not replace the capacitor. lastly if all that check out good then the motor windings are bad and the blower motor will need to be replaced.

Jan 31, 2011 | Heating & Cooling

1 Answer

480 volt motor that fluctuates rpm when running

I'm assuming you have 3 phase electricity, usually for farms or industrial buildings only. It sounds as if you may be out of sequence with you three phases. It may be a power supplier problem. If you are in a house with normal 120 and 240volt electicity then a 480 volt appliance won't work properly.

Jul 10, 2009 | Heating & Cooling

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be sure the fan setting on the stat is set for auto, not on. in this mode the fan should only run when there is a call for cool or heat.if the fan continues to run check at the control board to see if you are getting 24 volts low voltage between green and common. if you are then the stat is bad. if youaren't then your electric control board is possibly bad. a lot of gas furnaces fall into a failsafe mode when a sensor or function fails and the blowers stay on 24 7. you may well have several problems from what you are saying. if you turn everthing off and start a new cycle for heat the first thing that should fire up is the induced draft motor , then the ignotor, then the gas valve. you can check each item with a meter , generally 120 volts to the induced draft motor, then 120 volts to the ignitior, the 24 volts to the gas valve. then ignition and 120 volts to the motor. most furnaces have a heat terminal and a cool terminal on the board. common to heat should get 120 volts on a call for heat after the sequence of operationb has taken place. 120 volts should be sent to cool terminal on a call for cool. a continueous blower is a sign of a failed safety. perhaps the motor failed and the safety opened and the motor was replaced but the safety never reset?. look at all the little micro temp sensors around the burner. they are like little breakers and need to be pushed in to reset . usually like a little stem that pops out from a metal or plastic dic. some are size of a quarter, some the size of a dime.

Oct 29, 2008 | Heating & Cooling

2 Answers

My aprilaire 600 humidifier stays on when the blower shuts off

Make shure the 24 volts is hooked up to power that is only powered up when the blower is running. Some furnaces have a HUM terrminal on control (make shure the HUM is 24 volts some are 120 volts then you must use the transformer supplied with the AP 600). You can use a RP # 50 relay that senses current only when the furnace motor is running on the heating speed. Hope this helps

Oct 30, 2007 | Aprilaire 600 Humidifier

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