FaadielH

Hi
I had my system installed at the end of March 2025. Recently I came across a few posts with regards to the heat that the solar charge controllers were generating. My charge controllers were hot to the touch during the day and I decided to go down the rabbit hole of figuring out what temp's the controllers were hitting and how to reduce them.
Got myself a Temperature Sensor Gun and measured my controllers at 50.5 degrees Celsius before implementing my solution to cooling them down.
Parts :-
4-6 x 120mm CPU fan ( Deep Cool in my case )
1 x 90W 12V/7.5A Adaptor ( Model Q-A265 )
1 x 1 to 2 DC Split Cable ( used by CCTV )
2 x 1 to 5 DC Split Cable ( had those lying around )
4-6 x DC Female Power Connector ( CCTV ADPT MJ077 )



The heat sink of the controller is against the wall, I didn't want to interfere too much with the installation setup ( I removed the conduit cover for the middle fan to push air through ).
I left the conduit cover of the second controller on to see if there was a difference and you hardly see any difference in temperature. ( second controller at the far end in the pic ).



These are the measurements for today :-
At 07:30 the system was running at 3.8kWh solar production
Controller 1 ( 3 fans ) - 31 degrees ( Fans off )
Controller 2 ( 2 fans ) - 32.5 degrees
I purposefully left the fans off so that the controller can start heating up
At 09:08 the system was running at 6.8kWh solar production
Controller 1 - 50 degrees
Controller 2 - 50.5 degrees
Fans were switched on at this stage
At 09:22 the system was running at 7.3kWh solar production
Controller 1 - 43 degrees
Controller 2 - 43 degrees

At 10:17




The temperature of both controllers have been hovering between 41 and 42 degrees with the fans on.

Example of how the fan is connected



I hope that this implementation will extend the life of the controllers!!!!

Have a great day all.

Hi
I had my system installed at the end of March 2025. Recently I came across a few posts with regards to the heat that the solar charge controllers were generating. My charge controllers were hot to the touch during the day and I decided to go down the rabbit hole of figuring out what temp's the controllers were hitting and how to reduce them.
Got myself a Temperature Sensor Gun and measured my controllers at 50.5 degrees Celsius before implementing my solution to cooling them down.
Parts :-
4-6 x 120mm CPU fan ( Deep Cool in my case )
1 x 90W 12V/7.5A Adaptor ( Model Q-A265 )
1 x 1 to 2 DC Split Cable ( used by CCTV )
2 x 1 to 5 DC Split Cable ( had those lying around )
4-6 x DC Female Power Connector ( CCTV ADPT MJ077 )



The heat sink of the controller is against the wall, I didn't want to interfere too much with the installation setup ( I removed the conduit cover for the middle fan to push air through ).
I left the conduit cover of the second controller on to see if there was a difference and you hardly see any difference in temperature. ( second controller at the far end in the pic ).



These are the measurements for today :-
At 07:30 the system was running at 3.8kWh solar production
Controller 1 ( 3 fans ) - 31 degrees ( Fans off )
Controller 2 ( 2 fans ) - 32.5 degrees
I purposefully left the fans off so that the controller can start heating up
At 09:08 the system was running at 6.8kWh solar production
Controller 1 - 50 degrees
Controller 2 - 50.5 degrees
Fans were switched on at this stage
At 09:22 the system was running at 7.3kWh solar production
Controller 1 - 43 degrees
Controller 2 - 43 degrees

At 10:17




The temperature of both controllers have been hovering between 41 and 42 degrees with the fans on.

Example of how the fan is connected



I hope that this implementation will extend the life of the controllers!!!!

Have a great day all.

Hi
I had my system installed at the end of March 2025. Recently I came across a few posts with regards to the heat that the solar charge controllers were generating. My charge controllers were hot to the touch during the day and I decided to go down the rabbit hole of figuring out what temp's the controllers were hitting and how to reduce them.
Got myself a Temperature Sensor Gun and measured my controllers at 50.5 degrees Celsius before implementing my solution to cooling them down.
Parts :-
4-6 x 120mm CPU fan ( Deep Cool in my case )
1 x 90W 12V/7.5A Adaptor ( Model Q-A265 )
1 x 1 to 2 DC Split Cable ( used by CCTV )
2 x 1 to 5 DC Split Cable ( had those lying around )
4-6 x DC Female Power Connector ( CCTV ADPT MJ077 )



The heat sink of the controller is against the wall, I didn't want to interfere too much with the installation setup ( I removed the conduit cover for the middle fan to push air through ).
I left the conduit cover of the second controller on to see if there was a difference and you hardly see any difference in temperature. ( second controller at the far end in the pic ).



These are the measurements for today :-
At 07:30 the system was running at 3.8kWh solar production
Controller 1 ( 3 fans ) - 31 degrees ( Fans off )
Controller 2 ( 2 fans ) - 32.5 degrees
I purposefully left the fans off so that the controller can start heating up
At 09:08 the system was running at 6.8kWh solar production
Controller 1 - 50 degrees
Controller 2 - 50.5 degrees
Fans were switched on at this stage
At 09:22 the system was running at 7.3kWh solar production
Controller 1 - 43 degrees
Controller 2 - 43 degrees

At 10:17




The temperature of both controllers have been hovering between 41 and 42 degrees with the fans on.

Example of how the fan is connected



I hope that this implementation will extend the life of the controllers!!!!

Have a great day all.