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Frigidaire microwave professional series

I have a Fridgidaire Electrolux Professional Series Microwave. Model CPLMB1866CCA - 1.5KW with max power output of 1100 watts. Although all functions work, it is only partially heating. Example - What would normally require 2 minutes of heat would need to be heated for 5-6 minutes. Is it the magnetron, power diode, high-voltage capacitor or other? Not attempted to fix as yet. I have fixed my other appliances in the past (ie replace parts on digital stove, washers, dryers etc..). Is replacing a magnetron, power diode, or high-voltage capacitor difficult to do or requires a technician?

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If its the magnatron I suggest a technician

Posted on Apr 24, 2014

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Posted on Jan 02, 2017

  • 38 Answers

SOURCE: Frigidaire Professional series microwave won't heat

The most likely problem is the magnetron. Check your warranty in owners manual, I believe you have five year warranty on magnetron.

Posted on Mar 15, 2009

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SOURCE: Maytag MMV5156AAS Microwave won't heat and has hum/buzz.

A failed diode isn't the most common failure, but it happens. And sometimes it's due to bad magnetron or a bad connection.

If the capacitor fails, it almost always shorts, which results in a blown fuse whenever you hit "Start" to run the microwave.

The magnetron on this model should have a 5-year warranty, in case that's relevant. Your owner's manual is here.

We have the service / repair manual for this model and have uploaded it to our site here to help you.

It will give you safety info, step by step help in disassembly, troubleshooting tips, and part numbers.

Here are some links you or someone you know can use for test help, but read their safety warnings first:
(if it's not shorted or burned, it's probably okay)

There should also be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.


At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

You can find helpful exploded view diagrams and order parts here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Posted on Jun 30, 2009

  • 11 Answers


the lock on the door could be loose so the microwave light will turn on but it wont heat u should press on the door or buy a new one emai me at

Posted on Jul 21, 2009

  • 572 Answers

SOURCE: my frigidaire GLMV 169D 1000 watt microwave made a

the magnetron. is what heats

Posted on Feb 11, 2010

  • 1 Answer

SOURCE: Viking Professional (2006) 1100 watt Microwave runs but no heat?

Did you ever find out what was wrong? Ours is doing the exact same thing and we have no idea...

Posted on Oct 06, 2010

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Good Morning friend, thank you for your post!

I see that you are having difficulties with your Frigidaire microwave not shutting off. This could be a possible issue with your control panel or door switch. I would recommend performing a reset on your microwave and that can help clear out any potential miscommunications. To perform a reset you can flip the household circuit breaker off for roughly ten minutes. If that does not help resolve your issue you may need to seek assistance from a professional technician for proper diagnosis and repair. Hope this is helpful. -Matt

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Good Morning friend, thanks for your post!

Good Morning friend, thanks for your post!
From the information you have provided your Frigidaire microwave is making a grinding noise. This could be a possible problem with your motor or magnetron. I would advise to remove the plate on the inside of your microwave and check to assure no dirt or debris is holding the movement of your bottom plate. You may want to perform a reset on your microwave and you can do that by disconnecting power from it for roughly ten minutes. If that does not work you may need to have one of the electrical components replaced on the inside of your microwave and I would recommend having a professional technician out to perform repairs. This will help to avoid any future issues or personal injuries. -Matt

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My plmv169dcd stopped working,looks like it has no power, but there is power at plug in. is there a reset button>

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Its must have the manuql and alsoon its body there must be one notice on it or open it and check inside the transformer also there is asmall paper

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The microwave starts by itself and runs.

HI.although this is quite unusual, it can happen at times when the touch control becomes faulty. simply replacing the Touch control will fix this issue.

Touch control will run about $56.00

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Frigidaire Professional series microwave won't heat

The most likely problem is the magnetron. Check your warranty in owners manual, I believe you have five year warranty on magnetron.

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