Lo code new Hayward Heater

CCBRENNER

New member
Jun 28, 2023
4
Pensacola, FL
I have a new Hayward heater. I keep getting a lo code when the pool is turned off. This is a brand new heater and pool. My pool company that installed the pool told me to make sure I’m getting proper water flow in the system. But didn’t tell me how to do this. Do I do it on the Hayward screen or on the pool pipes. I’m new to this. They were no help. I would like to figure this out on my own so they will not charge me. So if anyone can help I appreciate it. Pool and sand less filters are very clean.
 

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Just to confirm, this only happens when the pump motor is off correct?

If the heater is left on when the pump is shut off, there will be a low pressure alarm "LO". Does the exhaust blower run too? This is normal behavior.

To prevent this from happening, the heater needs to shut off when the pump shuts off. Depending on your setup, you may be able to do this by connecting the heater power to the same relay as the pump.
 
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Yes pump motor is off. No the exhaust blower is not on. We are still getting to Lo code when pool shuts off. Then a bo code during the day when it is turned on.
As I said above, that is normal. That is how mine works as well although mine also has the exhaust blower running.

As long as it reads BO when the pump turns on, it should be fine to run that way.

However, as I mentioned above, you can have the heater shut off with the pump if you want.
 
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