Quote:
Originally Posted by retiredguy123
if that is what they told you, it is totally opposite from what the rheem manual says for tankless water heaters. It says:
"if the water heater is to remain idle for an extended period of time, the power and water to the heater should be turned off."
i think you either got bad advice or you misunderstood the instructions.
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in another life when we would shut off a water heater say for spillage, co backing up due to chimney blockage or improper vent line, when repaired often times the thermal lead which was constantly fed by the pilot flame would go cold. Upon restart they would fail i'd say one to two times out of ten. Soark ignition foes not have that issue
good luck