Can you please

You sure its E df ???

DF control board (DFCB) communication abnormality.
- Communication abnormality between the printer control board (PRCB) and DFCB. Causes DF control board (DFCB) Printer control board (PRCB)

Try the steps suggested here : Fix Error Processing Purchase DF BPA 30 on Android Play Store

Hi I have the same problem - mine is LPG and I need to convert it to NG... if anyone has any solutions I would be really grateful.
Thanks - Juliz

Sorry to read about your problem, I hope this helps you out.
you can contact Keurig at 1-866-901-2739 or Keurig.com
You do have a 1 year warranty, and if you are out of warranty. They will give a discount on a new unit.

I tried to help you. Please help me and Rate/Vote on my response, thanks and good luck

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ES= energy saver
DF= defrost

D1 is the first date given D2 is the second date given Df is the future date Dt is today's date expression is then---- D2 - D1 = 70%(Df - Dt) Solve for Df and get Df = Dt + (D2 - D1)/.7

press AC
press and hold set key for2 seconds, until zero appears on the screen
press tax+
input tax rate
press set
check by pressing AC, then pressing tax+ key. It should be the tax rate you inputed.

Good luck and please rate 4 thumbs for the free answer.

There is toner/starter spilled onto a sensor near the drum, it mite just need to be cleaned, this sensor monitors the drums abililty to develope a image, if the cleaning does not work it mite be the sensor or the drum. The drum needs to be removed to clean the sensors.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

i have a konica 7022 it say call service code F-35-3, what's wrong with it, help me.