MPP-Solar PIP1012LV-MK Solar charge controller fan going 100% all the time


New Member
Sep 2, 2020
I've got a pi connected to my PIP1012LV-MK and I can send it commands using an open source library

A few nights ago the fan suddenly went to 100% while the sun was setting, very little solar energy coming in and it's usually quite. I started running some queries and two bits of data stood out. The SCC_PWM temperature was high and the fan for the PWM was maxed out.
"scc_pwm_temperature": 75, "fan_pwm_speed": 100,

I took the cover off the unit recently to check for dust but everything inside looks fine at a glance.

Has anyone encountered abnormally high SCC_PWM temperature readings from an MPP-Solar unit?