August 18, 2024 
My samsung rb31fsrndsa fridge has tripped the electricty on occasion but does not do it all the time. When switching on the mains the led on the invertor control board comes on and then goes out. There are no flashing codes, I have checked the voltage from the pcb to the invertor control board and I get between 2.5 and 3.1 Volts from the 5 Volt output. The compressor is not shorting and the ohms reading between the terminals on the compressor is 13ohms. The overload sensor has continuity and the wiring fron the compressor and overload sensor to the invertor control board measure fine and has continuity. The power supply from the mains to the pcb is fine and the two fuses are also fine and not blown. Please advise Paul. Thank you,Riaan.
Riaan Lloyd
I will try and help with this problem about Samsung RB31FSRNDSA Fridge Freezer,
There might be an issue with either the circuit board or the compressor. To test it, you can hot wire the compressor to see if it runs properly. Let it run for about 20 minutes and check if the pipes start to change temperature. If the compressor works fine, the problem could be with a sensor or the circuit board.
Without having the machine in front of me, it’s very hard to help you through email. I’m sorry I can’t be of more assistance.
There are 15 similar models to your Samsung RB31FSRNDSA Fridge Freezer, please use your full model number which is written on the identification label.
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Paul Charmbury
Appliances Engineer
