I was here a couple of months ago with a problem that I got some great help on, so I thought I would try again.

There was water on the floor under the refrigerator, I had no idea how long it had been there or how often it came. But it was a lot and had been a while because my cabinet wall and absorbed so much water that it had now bowed out. At first I thought it was the water line so I pulled out the refrigerator from the wall, dried everything but couldn't find any leak from the water line. BTW, all the temperatures have been fine in the freezer and refrigerator.

If fact I didn't notice any water coming from anywhere. I did notice a pipe thought that was covered with frost though. I left the refrigerator out for most of a day and still no other water. So I pushed it back in and looked several hours later and still no more water. So the next day, now I see water, not a lot, maybe 1/4 to 1/2 cup, but I can imagine that if that continued it would ruin my cabinets more.

I looked through the forum questions and it wasn't clear to me what applied to me here. So here are a couple of questions also:

1. Where does the defrost water go anyway? Under what conditions would it end up on the floor?

2. What is this frozen/frosted pipe in the back of the freezer? Should it be frosted that way, could that be where the water is coming from as that frost melts? I couldn't see any drips below it though.


3. What should I look for?

Thank you

Geoffry

Hi Geoffry,

Here's the parts diagram for your model:
MZD2766GEB
Diagram#1 Part location#5 is your defrost drain hole, and #7 is the drain line to your defrost pan#16.

Has anyone worked on your compressor or sealed system to do a repair?

The reason you get frost on your outside evaporator line to your compressor is too much freon.

Jake

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Jake,

Thanks for your reply.

Yes, from my last refrigerator problem, a repairman said that I needed more freon and that he would fill me up. So it sounds like I actually paid for this problem. Or are they not clearly related in this instance to the water on the floor.

You gave me the diagram to the defrost drain. Should I specifically be doing something with this?

How do I release the right amount of freon?

Thanks

Geoffry

By law you can't release freon into the air anymore, it needs to be recovered, and that can only be done by a licensed refrigerant tech.

Yes, thats likely causing water on your floor.

I gave you the diagram for your defrost drain, just to let you know were it was. You can run some hot water down it, to make sure its not leaking onto your floor. Its located inside your freezer section, just take out you bottom freezer storage container and you will see air vents on your inside back panel bottom, then your defrost drain is behind it, it should be visible without taking your inside back panel off.

Jake

__________________
Appliance Repair School 1987-1988
Star Appliance Tech. 2 yrs. 1988-1990
Wards Appliance Tech. 11 yrs. 1990-2001
Sears Appliance Tech. 4 yrs. 2001-Oct. 2005
Jake's Appliance Repair Nov. 2005-present

If you need more repair advice help on your appliance, click Here

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I have the same model (Maytag MZD2766GEB) purchased in Oct of 2001. It has been working fine until recently. I've noticed similar puddles of water on the kitchen floor under the refrigerator, hapening with increasing frequency. After many inspections to try to figure out what was causing the problem, I was lucky enough to catch the defrost heater coil on on for no good reason. Once I noticed this I looked for it specifically and found that it seems to happen frequently and stays on long enough to melt the ice in the ice cube tray (and soften everything else in the freezer). The water then drips down onto the inside floor of the freezer and eventually pools enough to drip onto the floor. Between "defrost" eppisodes, the freezer seems to work properly making this appear to be an intermittent problem. Perhaps you are having a similar problem?

So my questions are these:

1) How can I confirm my diagnosis of the defrost heater coil coming on too often/ too long? Could there actually be some other root cause problem?

2) What are the most likely causes of the problem? (Defrost timer? Defrost control board? Other?)

3) I'm a robotics engineer and pretty good with my hands - is this something that I might be able to fix on my own? Or should I call a repair tech?

Hi,

This model has the adaptive defrost control board, so its not really set on a timer to go into defrost at set intervals like the mechinical timer models are.

As long as your refrigerator and freezer are cooling good, then its doing its job.

It sounds like you have a possible drain hole clog thats not letting the defrost water run down into your drip pan, run some hot water down your defrost drain hole, if it doesn't go down fast, its clogged, then you would need to use air pressure to blow out the drain line, or get a mini-snake to run down it.

I use a evaporator cooler spider snake:
http://www.azpartsmaster.com/shopazp...LR4690%29.html

They are used basically in Arizona to clean out the water pump tubes that run to the cooler pads.

I don't know if they would sell them in your area, but if you go to your local hardware store, they should have something similar to run down your drain to clean it completely out.

Jake

__________________
Appliance Repair School 1987-1988
Star Appliance Tech. 2 yrs. 1988-1990
Wards Appliance Tech. 11 yrs. 1990-2001
Sears Appliance Tech. 4 yrs. 2001-Oct. 2005
Jake's Appliance Repair Nov. 2005-present

If you need more repair advice help on your appliance, click Here

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Jake,

Thanks for the quick reply. Of course, after I wrote the message to you last night the freezer side stopped cooling. I tested this by removing everything and placing a glass with a little cold water in it. This morning it was not frozen.

Last night I also removed the rear and inside back panels so that I could look at the drain tube, coils, and fans. Drain tube is clear, no frost at all on the coils, and both the condensor fan and the fan above the coils are working smoothly.

One other thing I noticed when inspecting the above was that there is a relay at the rear bottom of the refigerator that clicks on every couple of minutes, stays on for 30 sec or less, then clicks off. I can't tell exactly where this relay is, but when it is on I can hear a faint hum coming from the bottom left side of the back of the refigerator. When the relay clicks off, the hum goes away. I flet around with my hand a little bit but could not find anything obvious vibrating in sync with the hum.

Does this sound like a problem with the adaptive defrost control board? I've read a number of your posts on it and I'm sure I can replace it myself. Anything else I should look at while I'm in there?

That clicking sound from the bottom rear is your compressor start device relay/overload, either that is bad or your compressor is bad.

Here's the parts diagram for your model:
MZD2766GEB
Diagram#1 Part location#4 is your compressor start device relay/overload kit.

The way I test them is with an ohm meter and check for continuity

Jake

__________________
Appliance Repair School 1987-1988
Star Appliance Tech. 2 yrs. 1988-1990
Wards Appliance Tech. 11 yrs. 1990-2001
Sears Appliance Tech. 4 yrs. 2001-Oct. 2005
Jake's Appliance Repair Nov. 2005-present

If you need more repair advice help on your appliance, click Here

Look-Up & Order Parts

Shop Home Appliances