Should the head unit still put out the 28 volts without using a jumper? For example, if I stick my volt meter probes inside the connector to verify the head unit is sending the proper voltage to the spin brush. Or does the electronics in the spin brush control that.
Check this video: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-DU8gKK3em3Y.html In this video I disassembled the HP 04 model. In the video where I cleaned the particle sensor, the model of the purifier is PH01. The procedure is very similar for both models.
