JYP high-frequency heating equipment alarm, unable to heat, overvoltage indicator light on cause and maintenance
1.The input voltage is higher than 420V
2. The setting of the overvoltage setting potentiometer on the main board is inaccurate: adjust the multi-turn potentiometer on the upper right of the main board, and rotate it clockwise once every week to increase the overvoltage value by 10V. Make sure that the input voltage does not exceed 420V before making this adjustment.
3. Equipment failure: motherboard failure, factory repair