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What causes the popping sound from the inside of the heater when it’s in operation?

April 26, 2017causes heater operation popping sound

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What causes the popping sound from the inside of the heater when it’s in operation?

1 Answer

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The sound is an indication that mineral / lime deposits have built up on the bottom of the heater. Suggest flushing the tank (see maintenance procedures). If this does not help the interior of the tank will have to be professionally cleaned. Remember that this buildup may cause premature tank failure.