Author Topic: Dacor Range F1 Error Code  (Read 17292 times)

Offline TechnicianBrian

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Dacor Range F1 Error Code
« on: November 09, 2008, 07:34:10 AM »

Model #ERD30S06BR, this dual fuel range would display an F1 error code at what seemed to be completely random times. Each time the error occurred, it could be cleared by pressing the cancel button only to have the error message reappear moments or even hours later. The only thing that would keep the error at bay was shutting off the power at the circuit breaker. With this error coming and going, the oven became all but unusable to the customer.



The F1 error is, as Dacor describes it, a system watchdog circuit used to monitor the bake element relays for a possible failure such as a command to supply heat without receiving an input from the switch membrane. These element relays which are mounted on the ovens relay board turn the L1 and L2 line voltages on and off to the bake element. If either of these relays were to actuate without a key press, the watchdog should catch the operation and display an F1 error.

Once the error has been displayed, it is cleared with the cancel button, and should no longer occur, but if it does, the recommended repair is to check the ovens main control and replace as needed. Because this error was reoccurring, the control board was the likely candidate for replacement, but the completely intermittent timing of the error seemed to indicate something else in this range was amiss. Looking at the wiring diagram for other components which may be at fault lead me to the front of the range, and the item that was the real reason for these random errors.


The door latch mechanism is used during the self clean cycle to ensure the door remains closed and locked until complete. The latch contains two micro switches used to monitor the position of the latch motor allowing the control board to know the position of the door and latch. What was discovered (I had the assistance of one of my students) is one of the switches had been shorting to the frame due to an excess buildup of grease and grime from years of use. This short circuit was being interpreted by the main control as a problem, thus the reason for the F1 error.

A new latchicon assembly complete with two micro switches and motor was installed into this range allowing the oven to once again turn on and off when needed. The unit functions as expected once again, and the error message has gone away for good.

 

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