Question about Hayward H Series Pool & Spa Heater 400k Btu Propane Gas Milivolt Ignition H400p1

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How does heater work to keep freeze off pool in winter

Since temps are dropping at night, pool often turns on and water circulates. Last night, pump running, no water circulation. Is this the heater? does it run on electricity or gas? I have inherited this home and pool. Propane tank is empty. do I need it filled to keep pool from freezing in winter?

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What state do you live in, what is the brand name and model number of the heater. If you live in a state that gets cold during the winter, call you local pool store and schedule a closing. If the pump is running and water is not circulating, most likely the pump lost prime or your filter needs to be backwashed, or there is some debris in the impeller.

Posted on Jan 08, 2009

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Posted on Jan 02, 2017

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1 Answer

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E7 is a DRY heater fault.


Check the following first:
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