Author Topic: Dryer runs, but doesn't heat up  (Read 8923 times)

Offline DannyT

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Re: Dryer runs, but doesn't heat up
« Reply #10 on: August 07, 2010, 02:25:35 PM »
After some more poking around on the net, I've discovered that the relay I've shown above is not the heater relay.  Rather the heater relay has a clear plastic color and is located directly under the heater coil.  Sorry. Will test relay and report back findings.

Offline DannyT

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Re:heater relay questions
« Reply #11 on: August 09, 2010, 06:37:19 PM »
I was unable to test the heater relay in place, and found a parts house nearby who said he had the correct relay based on my describing it as a SE-1000. His asst. said that they could test my old one before I bought the new one, so I took it in. Owner then informed me that he couldn't test mine, but it was cheap enough that I should just buy the new one. The relay he sold me is different even though he said it cross references to replace mine. My existing relay in the photo is larger and part# is 306199. The replacement I have  (he said it's smaller because it's solid state(?) is numbered 2202729 and it does say Maytag.
Is this correct? As they're not identical, does it matter which way the wires are hooked up? I presume it doesn't matter as there are no markings on the new relay - just the 2 sizes of spade connectors - small=low voltage; large=220v.
This may not be the fix, as I haven't determined that the old one is broke, but if it'll make my heater coil hot, I'm ahead and we can use the W/D again. thanks for your help.

Offline DannyT

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better image of relays
« Reply #12 on: August 09, 2010, 06:45:58 PM »
original image seemed too small, so here's a better one.

Offline JWWebster

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Re: Dryer runs, but doesn't heat up
« Reply #13 on: August 09, 2010, 07:56:38 PM »
The 2 small terminals are low voltage 24vac from the transformer. check for continuity between those 2 small terminal if open bad. simple. Check to see if the transformer has continuity on the low side and the high side of the transformer.
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Offline DannyT

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Re: Dryer runs, but doesn't heat up
« Reply #14 on: August 09, 2010, 08:05:13 PM »
<The 2 small terminals are low voltage 24vac from the transformer. check for continuity between those 2 small terminal if open bad. simple.>

I just did this test with my meter. The low voltage terminals on the original relay show no continuity and the new relay does! So that tells me that the original relay is bad. 
You didn't answer whether the new relay I got today (#2202729) is what I should use to replace the original (#306199) one. thanks

Offline JWWebster

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Re: Dryer runs, but doesn't heat up
« Reply #15 on: August 09, 2010, 08:19:34 PM »
If the guy you bought it from sold it to you and said it would work I would try it. This is really a generic part. What you have is a simple switch that gets turned on by low voltage. It ain't rocket science.
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Offline DannyT

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Re: Dryer runs, but doesn't heat up
« Reply #16 on: August 09, 2010, 09:46:04 PM »
Yeah, well, after trying to find the part number for this relay, and reading the manual, it appears that this guy sold me a relay for a gas dryer, not the electric model. In the manual it reads:
"The terminal configurations for the relays used in the gas dryers and the electric dryers are different. The terminals on the relay used in the gas dryers are located on the top of the relay.  The terminals on the heavier relay used for the electric dryers (and repair for both gas and electric) are located on the end of the relay."

So now I have the wrong relay, and from what the manual says I shouldn't use it - I could do the reverse - use the relay for the electric in a gas unit, but not the other way around.

The load for a gas dryer on the high voltage side would be much less than the 220v going through the relay for the electric model, no?
When searching for the correct part, it shows up here: http://www.apwagner.com/index.php?main_page=product_info&cPath=7_666&products_id=38224
...so it wasn't superseded by the one he gave me, and I doubt it would work for very long if at all.

Offline JWWebster

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Re: Dryer runs, but doesn't heat up
« Reply #17 on: August 09, 2010, 09:48:40 PM »
That part would not last too long maybe. I would go back and ask him if he thought the amp draw on that switch would affect the performance.
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Offline DannyT

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Re: Dryer runs, but doesn't heat up
« Reply #18 on: August 11, 2010, 09:43:24 PM »
So I have a new relay on it's way to me in the mail. It'll be a few days, maybe the weekend before I receive it.
The old relay had no continuity on the low side, so I'm assuming that relay is bad. [I did not check the heater relay in place with voltage to see if 24v to it closed it and thus activated the high voltage side. But the new (wrong) gas version heater relay did have continuity across the low voltage side.]

Question is, did the failure of something else cause the relay to fail (transformer?) and if there is some other failed part in this circuit with the heater will the new relay fail as well, or soon? What else should I check out before installing the new heater relay?
Or is the relay my only problem and once that's installed everything will be fine?

thanks

Offline JWWebster

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Re: Dryer runs, but doesn't heat up
« Reply #19 on: August 11, 2010, 09:49:37 PM »
Well you know they install limits all around the heater and blower. Of course their would logically be a limit somewhere. You gotta look.
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About the icons: The beer is tip link, if a tech saves ya some money buy em a 6 pack. The small green square=personal message. The green dot is a link to my web page on appliance repair and other general BS I love to post. The letter sends me email.
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