Mppt connection
published: 18/02/20, 09:16
Hello
please help me, I have been working on it for 2 weeks and I have run out of ideas ...
a 10w solar panel connected to its 30A mppt charges a 12v, 33AH battery.
to the LOAD output is connected a 12V W1209 thermostat which activates a 12v fan when the temperature exceeds 23 ° C.
but once this value is reached, the fan receives an impulse, then the mppt drops to 5v, cuts off, then starts again on the same loop diagram.
with another weaker battery, same fault.
the mppt is set to 14,4v at maximum charge and 12,8v at maximum discharge for the battery.
Could someone explain the phenomenon to me and how can I fix it?
please help me, I have been working on it for 2 weeks and I have run out of ideas ...
a 10w solar panel connected to its 30A mppt charges a 12v, 33AH battery.
to the LOAD output is connected a 12V W1209 thermostat which activates a 12v fan when the temperature exceeds 23 ° C.
but once this value is reached, the fan receives an impulse, then the mppt drops to 5v, cuts off, then starts again on the same loop diagram.
with another weaker battery, same fault.
the mppt is set to 14,4v at maximum charge and 12,8v at maximum discharge for the battery.
Could someone explain the phenomenon to me and how can I fix it?