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Author Topic: My cb2800 won't start ... thoughts or ideas?  (Read 24306 times)

gte

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Re: My cb2800 won't start ... thoughts or ideas?
« Reply #15 on: February 09, 2015, 10:18:24 am »
I do not charge for estimates either in my business, as I believe that is a bad business practice.

I called Clean Burn and when I told them I didn't want to deal with the locals, they referred me to someone outside of my regional district in Strasburg, PA. Does this mean I could order the fan switch from you? If so do you know about what it costs?

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Re: My cb2800 won't start ... thoughts or ideas?
« Reply #16 on: February 09, 2015, 11:08:52 am »
I cannot remember off the top of head what length the CB 2800 is, it will be 5" or 8". Measure yours to make sure which one is correct.

Honeywell L4064B2228  5"
               
               L4064B2236   8"

Just punch those numbers into Google and you will find places that will sell it for cheaper shipped to you.

gte

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Re: My cb2800 won't start ... thoughts or ideas?
« Reply #17 on: February 09, 2015, 01:41:30 pm »
Thank you for that, you've been a huge help to me.

I wonder if the auto/manual part isn't working properly? I've seen the thermostat portion rotate, so I believe that part of it is working.


I cannot remember off the top of head what length the CB 2800 is, it will be 5" or 8". Measure yours to make sure which one is correct.

Honeywell L4064B2228  5"
               
               L4064B2236   8"

Just punch those numbers into Google and you will find places that will sell it for cheaper shipped to you.

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Re: My cb2800 won't start ... thoughts or ideas?
« Reply #18 on: February 09, 2015, 02:01:14 pm »
Just make sure the low temp tab has not been adjusted below 100*.

gte

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Re: My cb2800 won't start ... thoughts or ideas?
« Reply #19 on: February 10, 2015, 08:01:00 am »
I will.

My thermostat outer diameter measurements (long ways) was 4&1/8th of an inch. Is that the 5" model?

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Re: My cb2800 won't start ... thoughts or ideas?
« Reply #20 on: February 10, 2015, 10:30:57 am »
I apologize, I should have described better what needed to be measured. There is a probe that sticks through the sheet metal cabinet and that is what needs to be measured.

gte

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Re: My cb2800 won't start ... thoughts or ideas?
« Reply #21 on: February 12, 2015, 04:44:04 pm »
It is 8" long.

Here is a pic, I've noticed that it turns on the fan when I turn the unit on (power wise) and then it turns off, the unit heats up and it then it starts. I noticed it will sometimes get very hot and turn off and then run the fan for 60 seconds or so and then turns that off. Then it sits not running for 10 minutes, cools down and turns on again. It gets very hot when this happens and I would think the fan would run while the unit was off to cool it down, but it doesn't? Is this normal?


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Re: My cb2800 won't start ... thoughts or ideas?
« Reply #22 on: February 12, 2015, 05:10:07 pm »
Has anybody messed with the wiring ?

The black wire should be on the right side.

Adjust your low tab to 100*-110*.

Adjust the middle tab to 140*.

Try that and see how it works.

gte

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Re: My cb2800 won't start ... thoughts or ideas?
« Reply #23 on: February 12, 2015, 09:12:54 pm »
I have not, I do not know about the previous owner?

So switch the black and orange wires? Should I trace them back to make sure they didn't just switch them around somewhere else as well?

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Re: My cb2800 won't start ... thoughts or ideas?
« Reply #24 on: February 12, 2015, 09:22:42 pm »
Orange and red are in the correct spot.

 The black wire should be in the bottom right hole.

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Re: My cb2800 won't start ... thoughts or ideas?
« Reply #25 on: February 12, 2015, 10:52:26 pm »
I think the unit is getting hot enough to where it shuts down to protect itself ... is this possible? It had turned itself off when I had went out and when I switched the black wire location it was already off from being so hot so nothing happened. I'll have to check it tomorrow when it has cooled down I guess?

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Re: My cb2800 won't start ... thoughts or ideas?
« Reply #26 on: February 12, 2015, 11:04:19 pm »
If it hits 200* it kills power to the burner but the fan keeps running to cool the firebox. Once it cools off power is restored to the burner. Power runs through the fan limit switch first then to the burner.

Orange wire is power to the fan.

Red wire is power to the burner.

gte

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Re: My cb2800 won't start ... thoughts or ideas?
« Reply #27 on: February 13, 2015, 06:45:32 am »
Ah, that makes sense, thanks for the explanation.

My fan does not run but for 60 seconds or so, at least with that black wire plugged into the top wire insert port, maybe it will behave differently with the wire plugged into the bottom insert port? I doubt it is only supposed to run for 60 seconds or so when trying to cool the entire unit down? I will see today, if not I guess I will have to order a thermostat after all.



If it hits 200* it kills power to the burner but the fan keeps running to cool the firebox. Once it cools off power is restored to the burner. Power runs through the fan limit switch first then to the burner.

Orange wire is power to the fan.

Red wire is power to the burner.

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Re: My cb2800 won't start ... thoughts or ideas?
« Reply #28 on: February 13, 2015, 10:04:06 am »
Once again I apologize for thinking we are both thinking the same.

I visualize the fan limit switch in the upright position when I describe it. On your heater it is laying on its right side. So when I say ' bottom right ' I mean that while looking at it in the upright position with the dial on top.

With all the different brands I work on they have it mounted differently so to make it easy in my head I remember it in the upright position.

Does that make sense ?

gte

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Re: My cb2800 won't start ... thoughts or ideas?
« Reply #29 on: February 13, 2015, 10:33:10 am »
No need to apologize, I'm the newb here :) . I'm glad I verified though.

So you are telling me to move the black wire from spot 1 to spot 2 then, correct?




Once again I apologize for thinking we are both thinking the same.

I visualize the fan limit switch in the upright position when I describe it. On your heater it is laying on its right side. So when I say ' bottom right ' I mean that while looking at it in the upright position with the dial on top.

With all the different brands I work on they have it mounted differently so to make it easy in my head I remember it in the upright position.

Does that make sense ?