Wolf SO36U Service Manual download pdf (Page 22)

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Electronic Control System

3-2

ELECTRONIC CONTROL TERMINOLOGY & COMPONENT DESCRIPTIONS

All Wolf wall ovens utilize an electronic control system. The electronic control system monitors, regulates and con-

trols a variety of functions. The control system also displays error codes to identify possible problems with the unit.

The table below defines some of the basic electronic control system terminology and describes some of the elec-

tronic system components. An understanding of the following information is needed in order to comprehend the

input operations and functions of the electronic control system.

erm / Component Definition / Description

Oven Controller.......................................The printed circuit board containing the microprocessor and logic inputs

which communicates with the oven display, keyboard, stepper motor control

board.

Relay Board............................................The printed circuit board containing the microprocessor, relays and electrical

connections which control and monitor functions and operations of the unit.

Oven Display...........................................A vacuum fluorescent display which shows oven temperature, cooking

modes, error codes, cook times and stop time.

Stepper Motor Control Board..................The printed circuit board containing a transformer and logic control to drive

the stepper motor.

Control Panel Assembly..........................The head assembly containing the oven display(s) and keyboard.

Relays.....................................................The electrical components on the relay board that switch other components

in the unit ON and OFF when instructed to do so by the microprocessor.

Microprocessor........................................An electrical component on the control board which receives electrical sig-

nals from other components, processes that information, then sends an

electrical signal to the relays on the board to open or close, and other com-

ponents in the unit to switch on or off.

Keyboard.................................................An assembly of glass and mylar which connects into the upper oven display.

Error Codes.............................................Number or word description which appears on the oven display if the unit

experiences specific problems related to electrical signals supplied by the

electrical components.

MDL.........................................................Motor door latch assembly which incorporates the latch motor drive, unlatch

switch, latch switch and door switch.

RTD.........................................................The oven(s) temperature sensing device.

dlb............................................................A component on the relay board which is a relay that connects and discon-

nects the L2 line to the elements when energized by logic from the oven

controller.

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Wolf SO36U Service Manual Page 22