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Customer Questions and Answers for High-Voltage Diode Kit (Microwave) by Frigidaire

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Manufacturer Part
4.89 (64)
By: Frigidaire
Part Number: OEM9662217
Manufacturer Part Number: 5303918287

This microwave high-voltage diode kit converts AC to DC in the high-voltage circuit so the magnetron can heat. Replacing a failed diode often restores heating performance. What it does:

  • Rectifies high-voltage AC to DC for the magnetron
  • Completes the high-voltage circuit with the transformer and capacitor
  • Common failure symptoms include running but not heating, loud humming/buzzing, or blowing a fuse/tripping a breaker at start
  • Visual clues can include cracking, swelling, or burn marks on the diode
What's included:
  • One high-voltage diode
Install notes:
  • Disconnect power before servicing; microwaves can retain lethal voltage even when unplugged
  • Properly discharge the high-voltage capacitor before handling components; use insulated tools and approved procedures
  • Note diode orientation/polarity and mounting; install exactly as the original

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Questions & Answers

For Frigidaire High-Voltage Diode Kit (Microwave) (Part Number: OEM9662217)

Kale for Model Number Frigidaire side by side fridge (unknown)

I have no water at water dispenser or water to the ice maker. My question is about the diode kit under in the back of the fridge. I have 120v on the wiring entering diode kit from both the water dispenser switch and the calling of water for the ice maker. On the single tan wire of the diode.....the output is about 60-70VAC. Is this normal? The brown solenoid says it's 120V AC. Already replaced the diode kit with another one......same voltage issues. What is the issue? I do have supply line water pressure to the inlet valve.

1 Answer

Kale, It sounds like this issue would be a faulty water valve causing the unit from dispensing water to the dispenser or to the icemaker.

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1 Answer

Marc, While the diode could be the issue there is usually an issue of water coming out of the dispenser when the icemaker is calling for ice. For this issue double check the fill tube to make sure that the fill tube is not frozen and check to make sure that the icemaker is getting 120 vac to it. Also check to make sure that there is 120 vac to the valve when calling for water.

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Brad for Model Number FFHS2611PFCA

Okay, my ice machine is not getting water. We had this issue before, and we replaced the ice machine. This fixed the problem. About 1 year later, our ice machine quit getting water again. I replaced the ice machine - this didn't fix the problem. I replaced the water inlet valve - this didn't fix the problem. My water dispenser has always worked. I tested the diode, and the voltage meter is reading about 120 at both brown and yellow terminals. Am I able to test the green terminal? What should I consider next? Should I replace the diode or the circuit board? Also, I tested the last water inlet valve, and there was continuity at all terminals. Thanks in advance.

1 Answer

Brad, Cycle the icemaker and test to see if there is 120 vac getting to the valve. If there is no power to the valve then this would most likely be a wiring issue but could be that a problem with the valve caused the icemaker to fail. Also check to make sure that the fill tube is not frozen. If there is power then the fill tube being frozen could be an issue.

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1 Answer

Eric, You will want to make sure that the filter is good and if this checks ok then the issue will most likely be the water valve.

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1 Answer

Eric, check the water inlet valve first. Use a multi meter, set on 120 VAC. disconnect the wires from the ice maker solenoid on the valve, attach the meter leads to the wire terminals. Test cycle the ice maker, when the control reaches the fill increment of the cycle, you should "see" 120 VAC across the two wires. If you have the voltage, the fill valve solenoid has failed, and the valve will need to be replaced. If you do not have the voltage, you will need to check the fill level switch or replace the ice maker. Thanks,

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John for Model Number FGHC2331PFAA

My ice maker was not working. Water dispenser was working. Brown and yellow servo were tested and working, but green servo was bad. Connected brown lead to green servo to jump and see if I could get the ice control servo working, which evidently was a bad idea. The water dispenser stopped working. Ordered a brand new valve control unit and installed. Fridge is now dispensing ice, but water dispenser is still not working presumably because of the "jump" I tried before the new control valve assembly was installed (amateur hour). Could this be the diode that was damaged or another culprit? Again, water dispenser was working fine before I jumped the servos on the old valve assembly and still not working with the new assembly. I hear no water pump "hummmm" you hear when the water dispenser is working correctly. Any help would be appreciated. Thank you.

1 Answer

John, For this issue the most likely cause will be a faulty main control board that has failed. The part number for the main board would be 5304498781.

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1 Answer

Hello Isaac. yes, if the die is bad, then the unit will not work properly. You will need to check the diode.

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1 Answer

Patrick, The diode will most likely not be causing the icemaker to not work. If the diode fails water will dispense through the icemaker when dispenser is pressed. For this issue it will most likely be an icemaker issue that is causing the unit to not make ice.

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1 Answer

Willie, Yes, a defective diode could create your problem. But it should be a bit obvious, Burnt wiring, or insulation and an electrical burn odor from the area. Also check to make sure you have 120 VAC on the tan and yellow wires from the ice maker, and before the diodes.

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Aaron for Model Number BFHS2611LM0

My ice maker was not making ice so I replaced the water valve which fixed the problem. It worked for just a week or two though and now it is not making ice again. The tray is filled up with ice, but it won't harvest it. I removed the ice maker and the ice cubes and put it back in. After putting it back in I turned the small gear shaft counterclockwise (last time I did this it started a cycle that progressed on it's own until it filled with water again). This time nothing happens. Is it possible that now the ice maker is bad too? Just seems like a weird coincidence. Thanks Aaron

1 Answer

Aaron, If the icemaker will not go into a cycle then it would be an issue with the icemaker and will need replaced.

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