Hello
have a 2018 Pentair Mastertemp 400. Worked well till just recently. I usually run it from my phone app screenlogic where I set the temp/time/schedule. Just lately it will start just fine, heat the pool/spa to desired temp then turn off but won’t come back on to maintain that temp. I can then turn it off restart and it will come on and reheat to desired temp. A few times it will allow temp to drop 4 degrees then come on but turn off before reaching full desired temp.
example: I set temp 99, heater kicks on heats to 99 then off, water temp drops to 96 heater kicks on heats to 98 kicks off.
is it a bad temp sensor? I don’t see any error Codoes but I’ve been told my unit does not store history of older codes. Thank you for help.
have a 2018 Pentair Mastertemp 400. Worked well till just recently. I usually run it from my phone app screenlogic where I set the temp/time/schedule. Just lately it will start just fine, heat the pool/spa to desired temp then turn off but won’t come back on to maintain that temp. I can then turn it off restart and it will come on and reheat to desired temp. A few times it will allow temp to drop 4 degrees then come on but turn off before reaching full desired temp.
example: I set temp 99, heater kicks on heats to 99 then off, water temp drops to 96 heater kicks on heats to 98 kicks off.
is it a bad temp sensor? I don’t see any error Codoes but I’ve been told my unit does not store history of older codes. Thank you for help.