Temperature range/manual heating

[hosek]

Hardware (please complete the following information):

• 2021 (Miami)
• 6 wires
• Custom
• None

Software (please complete the following information):

• Version 2024-07-07-2211

Hello, my friend (he has't got GH account so Im asking instead him) has problem with one specific case: Heating is powered from solar system, so heating should be ideally turned on only during day, but minimal temperature can be set only to 20 degrees and if there is cold night the water in the pump unit cools down under that limit and heating is turned on, then it took about 10 minutes when flow of the water gives temperature sensor proper info that temperature inside hot tube is actually above or equal 20 and heating stops.

Do you have some advice how to solve it, please? Would be possible to allow lower temperature than 20, or add option for "manual heating only" ?

Thank you for awesome project ;)

[visualapproach]

Hi! There is a virtual temperature that is supposed to counter the effect you describe with "false" readings in the pump when pump is off. But if the heater is turned off it doesn't turn on again until freezing protection. Somewhere around 6-10C. At least that's how my pump worked.

I may be wrong, but I guess he's just lowering the target temp, leaving the heater active. He should turn the heater off also.

[PaleFlyer]

Is your friend using something like Home Assistant/Ignition? If so, it's pretty easy. If it's just the ESP... no clue.

But like Visual said, Freeze Protection is "not avoidable".

And def need to just turn the heater off. Setpoint can be ignored.