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Old 05-20-2014, 06:13 PM   #1
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water heater buzzing

Have a new 2014 Discovery 40E with a noisy water heater. When the hot water is turned on you can hear a buzzing or chattering from the water heater. It is not real loud but easily heard. Also when the hot water is on and you open the cold water faucet very little the temp of the hot drops to almost cold. I think there is a check valve going bad or some type of restriction in the water heater. Have had it back to the dealer twice for this and some other small problems. The tech keeps saying that it is working fine and the noise is a vacuum break or mixing valve. I think he just doesn't want to pull the water heater to check. Has anyone else had this sort of Problem? Thanks
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Old 05-20-2014, 07:04 PM   #2
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It sounds potentially like a bad mixing valve. I just changed mine as j had similar symptoms.

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heater, water, water heater

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