Tag Archives: MOV227

Dacor 101559-C / DE81-09742A – U43 and L43 relay board errors

Posted on by

**** Notice ****

The new samsung part number is DE81-09742A.  DE81-09742A is identical to Dacor part number 101559-C and are interchangeable.

This post addresses a common problem with a built in Dacor oven. The display will start beeping and show a U43 or L43 error. The troubleshooting documentation will have you check for “Bad connection on S19 connection or bad relay board”. We have yet to see a case where this is caused by the bad connection. It has always been a problem with the relay board shown below.

If you have gone through the trouble of checking the S19 connection and it looks ok, Your should replace the board which if available on ebay. https://www.ebay.com/itm/285066010768 Note that if send it your old failed controller, you can get $150 back.

Dacor 101

Part Number 101559-C (AP5805098) replaces 101559, 72720

Models that are affected are Dacor MOV130S, MOV230, MOV227, MOV127, MOHD127, MOHD130, MOHD227, MOHD230,MOHS127, MOHS130, MOV130S, MOV230, MOV227, MOV127, EO230SCH, EO130SCH.

Typical Failures:

  • U43 Error Code
  • L43 Error Code
  • Fan does not turn on
  • Oven will not heat

If your are getting U43, the “U” means that it is an upper oven.  Conversely, if you are getting the L43 error, the problem is with the lower over.  Look at the selector switch to identify which board is set up to be upper or lower oven.

Upper or Lower Selector Switch

U43 pick board selected as upper. L43 pick board selected as lower

Location of the Relay boards shown here:

Relay boards are on top of the oven.