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My grundfos mk is cutting in and out reducing water presure

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Grunffos cossover valve might be bad.
Single-handled faucet might have defective cartridge, causing crossover at the faucet.
DIY Resources and troubleshoot:
http://waterheatertimer.org/Water-heater-recirculation-system.html
http://waterheatertimer.org/Crossover.html

Gene

Water Heater Timers Save Money

Posted on Dec 02, 2014

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Posted on Jan 02, 2017

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