Karlski
Premium Member
- Model Number
- NE595N0PBSR
- Brand
- Samsung
- Age
- 1-5 years
My Samsung induction range’s oven problem started when the oven would only heat up very slowly and could not heat above 240F, when I needed 475F (never a problem in the previous two years of ownership). One day later, the oven and broiler stopped working. No error codes were ever displayed.
The service manual is available online for a similar model, and has guided me in my troubleshooting.
I measured resistance for oven element, broiler element and convection heater and all are within spec. I measured the resistance of the temp sensor at 20° C and 100° C and they are close to spec. The induction elements on the cook top work normally. The door switch operates normally, switching on the light and turning off the convection fan.
When I switch the oven on nothing initially happens and the voltage between the two ends of the heating element is 0.00 V. Then after about a minute, I hear a relay click and the voltage shows a minuscule change (0.02 V) for 10 seconds and then the relay clicks and switches off the power, at which time the voltage goes back to 0.00 V. After a delay of 50 secs this process repeats again. For each repetition, the timing is the same.
When I measure the voltage between either end of the heating element and ground, it goes to 121 V during the 10 second activation phase, and then back to 0 V. (The house voltage across each of the two main circuit hot wires and ground is 121 V.)
When I measure the voltage between the right main circuit hot wire, and either end of the heating element, it switches from 117 V to 242 V during the on period. The voltage across the left circuit hot wire switches from 117 V to 0 V during the on period.
Despite the short period of some voltage being applied to the element for 10 second periods of time, it doesn’t make the floor of the oven even slightly warm to the touch.
I see the exact same behavior with the convection heater. However, there is never any voltage detected in the broiler element when it is turned on, and no clicking of relays.
I checked all wire harnesses for full seating. I did not check continuity in the individual wires as there are no burnt or obviously damaged wires. The Sub-PCB that has the relays is intact (no sign of damage).
I replaced the master PCB and it did not solve the problem.
The next step would be to replace the sub-PCB with the relays for another $100, but I don’t want to throw more money at the problem without a logical explanation of what is happening.
The service manual is available online for a similar model, and has guided me in my troubleshooting.
I measured resistance for oven element, broiler element and convection heater and all are within spec. I measured the resistance of the temp sensor at 20° C and 100° C and they are close to spec. The induction elements on the cook top work normally. The door switch operates normally, switching on the light and turning off the convection fan.
When I switch the oven on nothing initially happens and the voltage between the two ends of the heating element is 0.00 V. Then after about a minute, I hear a relay click and the voltage shows a minuscule change (0.02 V) for 10 seconds and then the relay clicks and switches off the power, at which time the voltage goes back to 0.00 V. After a delay of 50 secs this process repeats again. For each repetition, the timing is the same.
When I measure the voltage between either end of the heating element and ground, it goes to 121 V during the 10 second activation phase, and then back to 0 V. (The house voltage across each of the two main circuit hot wires and ground is 121 V.)
When I measure the voltage between the right main circuit hot wire, and either end of the heating element, it switches from 117 V to 242 V during the on period. The voltage across the left circuit hot wire switches from 117 V to 0 V during the on period.
Despite the short period of some voltage being applied to the element for 10 second periods of time, it doesn’t make the floor of the oven even slightly warm to the touch.
I see the exact same behavior with the convection heater. However, there is never any voltage detected in the broiler element when it is turned on, and no clicking of relays.
I checked all wire harnesses for full seating. I did not check continuity in the individual wires as there are no burnt or obviously damaged wires. The Sub-PCB that has the relays is intact (no sign of damage).
I replaced the master PCB and it did not solve the problem.
The next step would be to replace the sub-PCB with the relays for another $100, but I don’t want to throw more money at the problem without a logical explanation of what is happening.
