Model #EB20B COLEMAN / EVCON IND. Furnace/Heater, Electric

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Question and Answers

Q:

blower motor needs a little help to get started EB20B Coleman / Evcon Ind. Furnace

A:

Thank you for choosing Sears parts direct. I will be happy to help with your furnace. Upon researching model number EB20B; the motor may be weak or need to be lubricated. See if the bearings can be lubricated. The motor may need to be replaced.

Thank you for choosing Sears. We appreciate your business. Have a great day.

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Jeff Wallace Jr -
Sears Technician
July 21, 2015
Q:

blower won't shut off EB20B Coleman / Evcon Ind. Furnace

A:

Thanks for the inquiry and for being a valued member.

I am sorry to hear of the issue you’re having with the furnace blower staying on constantly. I know how concerning that is to have happen.

Now, it is normal for the blower to stay on for a few minutes (approx. 3 to 5 minutes), after the burner has shut off, to cool the heat exchanger down. On occasion it may stay on slightly longer. If it stays on excessively as indicted, the fan/limit control will need to be replaced. However, I do not see this part as being broken down as an individually replaceable component.

If the motor is making a noise, it could be a defective motor. Make sure the motor is not slowing down and moving less air, which would cause it to run longer. It should not affect (damage) the motor if it runs all the time. 

To determine for sure if this furnace has an additional relay, I would strongly recommend having a technician check the furnace. You can call 1-800-469-4663 to schedule a tech to come out.

If you would feel more confident have a Sears Home Service technician help assist with the diagnosis/repair, you can call 1-800-469-4663, or click here to be directed to the page to set up service.

I hope this helps and thanks for using SearsPartsDirect.com. We appreciate your business.   

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Jeff Wallace Sr -
Sears Technician
November 08, 2014
A:

There is a relay in the unit what I was leaning towards being faulty pin 5-6 run slow speed for blower which it will not turn off. I was doing some research and saw that the sequencer may cause the blower to stay on. Just looking for my any adevice that may help

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Hank -
November 08, 2014
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Q:

I had to replace a sequencer on a coleman electric furnace eb20b and now the furnace will not turn on. What could cause this?

A:

That's great to hear that you were willing to change the part on your furnace. I placed a link where i believe will help you understand how to replace the part. I hope the information is helpful while you wait for the expert to answer.

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celene -
January 16, 2011
A:

Being able to replace this part yourself, can save you time and money. First make sure the sequencer used is the correct one. It shows to have 3 different sequencers listed below.

  1. 3115-3571
  2. 3120A3571
  3. 3110-3571
If the furnace will not turn on at all, first it needs to be verified if there is 240 volts to the furnace. This needs to be checked at the breakers. If the voltage is there, it's possible when the sequencer melted, it may have shorted some wires and blew the transformer out. If you feel confident making voltage checks, you can check voltage at the transformer on the orange and yellow wires. It should be 240 volts here. Also check the red and black wires from the breaker for 240 volts. If there is no voltage on these wires, the breakers are probably tripped. Be very careful making these checks. If the voltage is there, now check the black and red wires on the transformer for 24 volts. If there is no voltage on these wires, the transformer # 90-T40F3 will need to be replaced. I hope this helps you. If you would like more assistance, any additional details will be helpful and I will be glad to assist you further.

If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website: Sears Home Services .

Safety Notice: Be sure to disconnect the appliance before performing any troubleshooting procedures. If you are not comfortable with doing any voltage checks or repairs that might be recommended, please contact a local service provider for repairs. Be aware that there could be sharp edges inside the appliance that could cause cuts or other injuries to yourself or others.

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Scott D -
Sears Technician
January 17, 2011
A:

can the sequencer also keep the furnace from shutting OFF?

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Flo -
March 05, 2013
A:

Flo, one of the sequencers will also control the fan motor on a call for heat. If the contact in this sequencer gets stuck, yes it will keep the fan motor running.

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Scott D -
Sears Technician
March 06, 2013
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