Below is a picture of my recently built PID driven temp controller. I have a fan attached to the heat sink of the SSR. I want the fan on when there is power to the SSR. So I attached it to the DC input side of the SSR. And this works, almost. When the fan is attached in this way, the PID (Mypin ta4-ssr) intermittently shuts off, then immediately powers back. When the FAN is not attached it works fine. Although the SSR doesn't get the cooling it needs. The fan is DC24V 0.18A. Any ideas as to why this is happening?