Refrigerator drain question

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Old 07-11-20, 11:42 PM
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Refrigerator drain question

Water puddle forms on the floor in front of the refrigerator about every 2-3 weeks. Suspecting ice maker water valve remaining open, I disconnected the 1/4" copper line from ice maker water valve. Refrigerator top, freezer bottom.

Yesterday it happened again. Immediately I checked the drain pan. It was dry. I noticed water drops at the bottom of the freezer. I turned off both refrigerator and freezer, emptied the freezer, and noticed ice completely covering the bottom of the freezer. I started metling the ice with a fan. Soon continuous water stream formed on the side wall (inside) from where I could see aluminum fins. I suppose it is the evaporator for the freezer. Drain tube must be clogged. I haven't found the drain tube yet.

My questions: What is the source of water drain in general? Is the water coming from the melting of ice formed in the freezer? Does the refrigerator section not generate any defrost water?

 
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Old 07-12-20, 12:47 AM
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During the defrost phase water is generated which is collected inside the fridge which goes to the pan via the drain tube. If the tube is full of crud, very common, then water will overflow.
 
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Old 07-12-20, 02:57 AM
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A make and model may help others help you.

The drain is normally directly under the evaporator coils.
 
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Old 07-12-20, 08:40 AM
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Subzero 550 about 25 years old. Top refrigerator, bottom freezer. Drain pan was wiped clean 2 months ago. It remains clean.

Thank you for the advice. I removed the bottom vegetable drawers from the refrigerator section. A drain tube starts from the back wall and disappears behind the wall. When I pour water into this tube, water comes out to the drain pan. So this tube is not clogged.

The clogged tube must be for the freezer section. I will remove the plastic cover of the evaporator and look for a drain tube there. Thank you.
 
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Old 07-12-20, 10:13 AM
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The drain pan should have water in it. If it doesn't..... it's not getting there.
Yes.... there are two sealed systems so there will be two drip trays. One in fridge, one in freezer.

With the age of that unit.... have you had the door gaskets replaced ?
Allowing hot air in will create a lot of unnecessary condensation inside.
 
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Old 07-12-20, 05:19 PM
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The following may be useful to you
https://drive.google.com/file/d/0BzI...d2M0tvVjA/view
 
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Old 07-12-20, 10:11 PM
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Thank you for the notes. The drawing helps.
1. The drawing shows only one drain tube that starts from the refrigerator (top), down through the freezer (bottom), and down to the pan. No separate drain tube for the freezer. I guess the freezer drain ties to the main drain tube, and this short path must be clogged. I will soon find out.

2. Since most water would come from the freezer, clogged freezer drain to the main drain tube would explain why the drain pan remains clean and dry.

3. I will order a door seal. When I get it, I will open the freezer evaporator cover and inspect the freezer drain.

Thank you very much for your help.
 

Last edited by paker; 07-12-20 at 11:56 PM.
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Old 07-12-20, 10:17 PM
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I agree..... the diagram is a little sketchy.
It would appear that there may be a tee at the back of the freezer drip tray.
 
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