We have a 15 year old Rheem "SK 1261" which recently has developed a steady and constant hot water drip from the hot water over flow. Initially it was a slow and inconsisent drip but now it drips to approximately 1 litre per hour. Would the recommendation be to replace the whole unit or have the problem area repaired.

Before calling service technician, copy following link for troubleshoot resources:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

C4 can range from failed PC Board to lime build-up inside heat exchanger
Error 15 is 'heat exchanger is too hot', clogged heat exchanger, restriction in cold water inlet, temperature set point too high.
If you recently changed temperature setting, then that might be cause.
Tankless require monthy-to-yearly maintenance to avoid common error codes.
Delime tankless and clean water filter, keep temperature low.
Never install tankless water heater is best way to avoid complications of expensive water heater that is maintenance heavy, hard to diagnose, expensive to fix, etc.
Never expose tankless to more than 11 grains hard water.
http://waterheatertimer.org/pdf/Rheem-CondensingTankless-maintenance-2012.pdf
http://waterheatertimer.org/pdf/Rheem-De-lime-tankless.pdf

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These are interior metals, similar like rock used in a sauna, to help keep water hot longer. Here is somethings to check out.

Hello, dave

I was trying to help you out here. Maybe this will help some? I was going backto some customers that asked questions in the recent past and even fartherback. It appeared that no one answeredsome of them, So, I thought I would take some of my personal time to see if Ican help. Even though this Informational site may not have your exact model orbrand, this site will help you a lot. Here is a site link about everything you want to know about hot waterheaters and possibly yours, from repair to trouble shooting it. http://home.howstuffworks.com/water-heater.htm

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Thanks, Mike


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