Blower water leak in attic furnace


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Old 01-11-16, 11:13 PM
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Blower water leak in attic furnace

So this happened almost exactly one year ago also (in peak AZ winter). Woken up by fire alarm in the middle of night. Found water on room floor leaking from ceiling fire alarm. Disconnected that and turned off heater up/downstairs. Found blower leak. Dried it up with portable fan in the attic for few days. Looked up online for cause and saw something about possibly clogged filters. After replacing all filters, no issues for a year. Now one year later same exact same occurrence. Same blower unit, same fire alarm unit. And I had just changed all filters last month.

(The unit for upstairs is right across from this one and it has drain pan exactly same position as this one. Fortunately there are no leaks in that unit.)

Attaching picture. Red arrows show the location of water droplets coming out. The drain pan extends almost 3-3.5 feet towards the right and was completely dry. Second picture shows close-up. Was there supposed to be some drain pipe attached here? If you need more pictures of the unit, please let me know. I don't know much about AC but wanted to find if the drain pan is not covering the required outlets. This was the original install 12 years back by Pulte, no changes done. Have left the heater off for couple days but the kids and DW cant take it any more Help! Any ideas?
 
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Old 01-11-16, 11:48 PM
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It's hard to see the drainage system there but that looks like a condensing furnace that produces condensation in its normal heating process. You'll need to check the rubber drain lines for clogs.

That looks like a Carrier. Please post the make and model of the furnace.
 
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Old 01-12-16, 05:29 PM
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Adding light to the pics..

Which rubber hoses please? Also should the drain pan extend to this big outlet or should there have been a drain attached to this outlet?
 
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Old 01-12-16, 05:43 PM
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You didn't leave a make and model so there is some guess work on my part. That is a convertible furnace..... horizontal or vertical operation.... as well as being able to be connected from multiple sides.

That looks like a rubber cap. I would have expected for there to be possibly some type of water drain there.

In looking at your picture.... I marked the inducer drain line in a red dotted line. That is probably due for a clean out. Also..... it would make sense that a high spot in that hose would create a trap. Where I marked in yellow dashes is higher that than the inducer drain and higher than the main drain.

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Old 01-14-16, 10:12 AM
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Thank you. I am unable to find a sticker for model number on it but I am sure it is a Carrier based on the outer cover logo. How do I clean this and bring this in correct level? I have many tools so I can try and do this myself, unless someone suggests not because it needs special tools. I have left the AC off for a while and only depending on the upstairs until to heat the whole house mostly at nights.
 
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Old 01-14-16, 11:41 AM
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You don't say where you are in AZ but if in northern AZ the drain line may be freezing.
 
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Old 01-25-17, 08:46 PM
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Sorry coming back to this after a year since it happened again this time of the year. I live in Phoenix suburbs (East Valley).

Last year, I could not figure our how to clean out the drain line as suggested so I created a aluminum foil channel from the bottom of the drain to the drain pan. This year my makeshift channel held by tape came off and leaked again through the fire alarm in the ceiling. Same story again

This time when I went up in the attic to check I removed the rubber cap on the unused opening and found the cap was full of water. I was surprised I was able to pull off the rubber cap by hand. I threw the water in the drain pan and slid the rubber cap back on. I am wondering if I just need to tighten the clamp on the cap so it wont leak from there. Another question again is how do I open the drain line to clean it as suggested before.

Here are more pictures of how it looks now.
 
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Old 01-26-17, 12:37 AM
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Pictures to high to see drain lines. Phoenix no freeze problem there, tho I had 4 inches of hail once there in north valley.
 
 

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