Repairing an Excalibur 3900 (No Heat)

I recently had a failure of my Excalibur dehydrator‘s heating element. Since it comes with a 10 year warranty, I had plenty of time left to get it fixed. An email to the company along with my make, model number, and serial number showed I was still under warranty and they started the process of troubleshooting the issue.

 After a few tests, it was obvious I had a part failure. The tech stated that in order to be sure to resolve the problem, it was best to replace two parts, either could be the culprit. The parts in question were the thermostat, and the fuse, and since it required a bit of disassembly, it made good sense to go ahead and change both at the same time.

Excalibur Thermostat and Fuse
Excalibur Thermostat and Fuse

Since I was under warranty, I only had to pay shipping, a minor annoyance, but it was $10.50 for a First Class package. The replacement parts were listed at $30 for the thermostat, and $10 for the fuse. From the looks of things, I paid for the wholesale cost of the parts along with the shipping. A bit underhanded, I must say. See the pic below for the actual shipping costs, $2.92.postal rate

The parts arrived in about a week. And I let them sit. I had nothing to dehydrate, so I figured I would wait until I needed it. Nothing like waiting until the last minute. I thrive under pressure, or at least I must think that I do.

I stopped at a green market today to grab more cucumbers for making pickles, and saw that sweet peppers where on sale again. So I loaded up, buying 12 pounds for $8.

I guess I needed to repair the dehydrator!

The process is a straightforward parts swap. Unplug from wall. Disassemble the back plate until you can replace the two parts. Replace the parts. Reassemble.

Here it is in pictures:

Remove the 8 screws.
Remove the 8 screws.

 

Remove the Control Knob
Remove the Control Knob

 

Inside the back plate. The screen covering needs to be removed
Inside the back plate. The screen covering needs to be removed

 

Remove the screws holding the safety screen in place.
Remove the screws holding the safety screen in place.

 

Remove the safety screen
Remove the safety screen

 

One by one, swap the wires from the original thermostat to the new one, being sure to get them in the correct spot.
One by one, swap the wires from the original thermostat to the new one, being sure to get them in the correct spot.

 

Remove the screws holding the old thermostat in place. Swap the Knob Retainer from the old thermostat to the new one.
Remove the screws holding the old thermostat in place.
Swap the Knob Retainer from the old thermostat to the new one.

 

Excalibure 3900 Fuse
Swap the fuse out, doing one side at a time, and being sure to align the new fuse the same way as the old one.

 

Reinstall the Safety Screen
Reinstall the Safety Screen

 

Reinstall the Back Plate
Reinstall the Back Plate

 

Replace the Control Knob
Replace the Control Knob

 

 

That’s it! Now plug it in to test it. You should see the heating coil start to glow, and feel hot air blowing out. If you do, you’ve done it right!

Make sure the heating element works
Make sure the heating element works

 

Things NOT to do.

  • Don’t work on the unit while it is plugged in!
  • Don’t put the safety screen back in place and put all the screws in with the control knob inside. Like I did.
I had to remove the safety screen again to get the control knob out.  DOH!
I had to remove the safety screen again to get the control knob out.
DOH!

 

It took me about 15-20 minutes, not counting distractions. Its a very simple, straightforward job, and if you know how to operate a screwdriver, you should be able to make this repair.

Mine is now running, with all the trays full of sweet peppers. The house smells like peppers, and it is a lovely thing. When they are done, I’ll vacuum seal them into jars for future use.

The gallon of dried peppers I ended up with from last year are almost all gone, so I’ll be increasing the amount to two gallons of dried peppers this year. Hopefully I’ll then be able to carry some forward to the following season.

 

Peace,
db

 

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6 comments:

  1. Spare parts Excalibur 3900

    I have a crash Excalibur 3900 because I have a different voltage is 220 volts and has become a fan does not work, what are the parts that I need to restart the achine?

    mr. faisal

  2. Thanks, i was abble to repair my dehydrator with your tutorial wich is not an excalibur. The fuse was burned, will never know where to check without this well made tutorial.

    1. Rather ironic that you’d contact me today, I just had an issue this week with mine. I did a search , I found my own website at the top of the list 🙂

      Glad it helped!

      db

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