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Bendersj  
#1 Posted : Friday, January 14, 2011 3:25:58 PM(UTC)
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Bendersj

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The broiler on our Maytag MEW5530BAW built-in oven stopped working.

I replaced the heating element, and it still does not heat up. Fan starts, relays click, etc. Oven element does work. What's the next step? Would love to get my hands on a troubleshooting/service manual for this oven!
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Joe / APP Team  
#2 Posted : Friday, January 14, 2011 5:44:34 PM(UTC)
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Joe / APP Team

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Originally Posted by: Bendersj Go to Quoted Post
The broiler on our Maytag MEW5530BAW built-in oven stopped working.

I replaced the heating element, and it still does not heat up. Fan starts, relays click, etc. Oven element does work. What's the next step? Would love to get my hands on a troubleshooting/service manual for this oven!


Benders,

You probably have a broken wire, or a bad relay on the ERC/clock,

Part number: AP4098840
Part number: AP4098840


You do have a multi meter, so you can check voltages, correct.

Here's how to check,

Turn power to the oven off,

Carefully remove the element,
(don't let the wires fall back into the back of the wall oven, I used paper clips or clothes pins to hold the wires).

Turn power on,

Check the Red wire terminal for 120 VAC to chassis ground,
The Red wire is a direct connection to L2 at the terminal block, and should have voltage as long as power is supplied to the oven, unless the wire is broken, in the back oven wall.

Make a broil selection,

Check the Blue wire terminal for 120 VAC to chassis ground,there should be voltage, only when the broil selection is made.
No voltage would indicate a bad relay on the ERC or the Blue wire is broken between the element and the ERC.

I'm sure you'll have it figured out in no time.

Sorry about the Service manual, we have no part number for one.

Good Luck,
:) :) :)
Bendersj  
#3 Posted : Saturday, January 15, 2011 8:31:40 AM(UTC)
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Bendersj

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Thanks for the instructions Joe,

Following your instructions, I'm seeing 120 VAC with the red wire to ground,
but when I turn the broiler on, I get 5.6 VAC on the blue wire to ground.

Looks like the relay works fine...but the controller is sending out a funky voltage coming through.

Sound right? - it's the ERC??
Joe / APP Team  
#4 Posted : Saturday, January 15, 2011 9:27:33 AM(UTC)
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Joe / APP Team

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Originally Posted by: Bendersj Go to Quoted Post
Thanks for the instructions Joe,

Following your instructions, I'm seeing 120 VAC with the red wire to ground,
but when I turn the broiler on, I get 5.6 VAC on the blue wire to ground.

Looks like the relay works fine...but the controller is sending out a funky voltage coming through.

Sound right? - it's the ERC??



Benders,

You're awfully close, or I'm too thorough.

Were it me, I would turn the power off,

Remove the control panel,so you have access to the terminals on the back of the ERC.

Disconnect the Blue wire from the Broil terminal on the ERC,
Power up the unit, program a Broil cycle and check for 120 VAC from the Broil terminal to chassis ground,

If you get the 5.6 VAC, you definitely have a bad ERC.
If you get 120 VAC , you definitely have a frayed / loose Blue wire.

I'd rather do this additional step, before spending a lot of money on an ERC, only to find it,s a bad wire.

Hope you understand, the thinking.

:) :) :)
Bendersj  
#5 Posted : Saturday, January 15, 2011 9:58:54 AM(UTC)
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Bendersj

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Made perfect sense - wish I would have thought of it, actually.

I got a very steady 120 VC at the terminal, it's not the ERC (thank you)

:confused: Scratching my head though... To verify the bad wire theory, I checked continuity of the blue wire from one end to the other. I get no indication of a break. I jiggled and twisted both ends of the blue wire to see if it was perhaps a bad terminal or crimp. No problem there. Rock steady from end to end.

I'm tempted to run a fresh wire from point A to point B just to see what happens...but I can't see how that would help it out.

challenge, huh?

Scott
Bendersj  
#6 Posted : Saturday, January 15, 2011 10:07:50 AM(UTC)
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Bendersj

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Update:
I plugged the blue back into the ERC, powered on, turned on the Broiler....and got 120 VAC at the blue wire to chassis ground.

:confused: I'm definitely thinking bad wire. Time to pull the oven from the wall and replace that!

Scott
Joe / APP Team  
#7 Posted : Saturday, January 15, 2011 10:51:49 AM(UTC)
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Joe / APP Team

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Originally Posted by: Bendersj Go to Quoted Post
Update:
I plugged the blue back into the ERC, powered on, turned on the Broiler....and got 120 VAC at the blue wire to chassis ground.

:confused: I'm definitely thinking bad wire. Time to pull the oven from the wall and replace that!

Scott


Scott,

Great job,

A few of feet of wire and a bit of work, and you're up and going, and saved a bit of $$, to boot.

Something you may want to try,before you pull that oven out.

Check and break the tape wrapper(s) holding the wiring harness together, separate the Blue wire, tug on it to see if it's free, if it is, use the original wire as a "snake" to pull the new wire through,

Good Luck,
:) :) :)
Bendersj  
#8 Posted : Sunday, January 30, 2011 3:39:14 PM(UTC)
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Bendersj

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Following the repairs (rewired the "bad" wire), the oven worked fine for just over a full week.

Now, the same symptoms are back. The broiler doesn't turn on.

We used the oven, both elements worked...and then roughly 30 minutes later, went to broil something, and nothing.

Might it be a thermostat problem? Or are we looking at the controller afterall?
Joe / APP Team  
#9 Posted : Monday, January 31, 2011 9:16:48 AM(UTC)
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Joe / APP Team

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Originally Posted by: Bendersj Go to Quoted Post
Following the repairs (rewired the "bad" wire), the oven worked fine for just over a full week.

Now, the same symptoms are back. The broiler doesn't turn on.

We used the oven, both elements worked...and then roughly 30 minutes later, went to broil something, and nothing.

Might it be a thermostat problem? Or are we looking at the controller afterall?


Benders,

The hi limit thermostat is not the problem, otherwise, your oven would be dead(no display no nothing)until the thermostat reset and closed.

So,

Let's try this,

*** live voltage test 120 VAC, be careful ***

Access the back of the ERC/Clock and power the unit up and program the clock time.

On the left lower corner of the board you'll see the control transformer.

There will be a black and white wire wires and terminals, Don't remove any wires, I want to know what happens"under a load".

Use the white wire as a common lead, and check all the black wires for 120 VAC from the white wire.

Now remove the blue wire from the "BR"terminal of the ERC and the yellow wire from the "BK" terminal.

Using the same white wire, check for 120 VAC on the "BK" terminal in bake.
Repeat the same procedure, check for 120 VAC on the "BR" terminal in broil.

Repeat the same test, re install the wires, and recheck voltage from white to BK, then white to BR.

Another check to make,

You'll need to get to the back of the wall oven and remove the terminal block cover,

Simillar to the prevoius checks

Neutral (white) is the middle terminal on the block.

Program a cycle, check for 120 VAC from white to L1(black) and white to L2(red) you should read 110 to 120 VAC on each check and 220 to 240 VAC across the L1 and L2 terminals, anything else would indicate a loose connection or damaged wires to the wall oven(in the wall).

Will be looking for your next post,

:) :) :)
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