Our Rinnai Water Heater is 17 Years Old, came with the house had the techs in yesterday because it goes cold intermittently when you shower. Never supposed to run out of hot water. He ran it for 20 minutes, plenty of hot water! last night took a shower it went cold, no code, no beep, nothing. He said the code would come on and it would stay on until the water went off. Tech did nothing. Water does not go cold in the other bathrooms, kitchen??? Any ideas??? Also hot water tastes very irony-that could be the softener which we had serviced already. Any ideas???
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