The PF code is a safety and diagnostic alert indicating that the appliance’s control board detected a significant interruption or drop in electrical supply during a cycle.

A drop in voltage below 180 V or a spike above 260 V .

This means: if you call a technician for PF, they will first check your home wiring – and charge you for the visit if the problem is external.

“Technician came, measured 205V at socket during spin, said ‘too low’, installed a voltage stabilizer – problem gone.”