Hot water dispensing system turns heater on at random
crwdns2934249:0crwdne2934249:0:
How can I repair the hot water dispensing system from turning on at random?
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=== Update (08/17/2018) ===
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This applies only to the hot water system; the coffee maker/brew system works fine. The hot water system turns on and off at random. This problem started about one week, ago. CHW-12 unit is about 4 years old.