Variable Speed Control; Variable Fan Speed - Electrolux EW30GF65G Series Product & Training Manual

Wave-touch and iq touch freestanding gas ranges

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Table Of Contents

Table of Contents

The Variable Speed Control (VSC) board operates the Convection Fan as well as the Oven

. In the event that either of these features do not operate properly the VSC board should be

lighting

examined as a possible source of failure. When testing for convection fan operation it should be noted

that on gas ranges there is a six minute delay from the start of the convection cooking cycle until the

fan motor will run.

To achieve optimum cooking results during convection cooking the fan motor speed can be varied.

The EOC will signal the VSC board to speed up or slow down the fan as needed. This speed change

takes place automatically with no action required by the consumer.

The VSC Board is located on the rear of the range

as seen in photo A. The board varies the voltage to

the convection fan motor as directed by the EOC to

alter the motor speed. The speed control signal and

the power supply to operate the VSC board come

from the EOC through a wiring harness connected

between P2 on the EOC and P1 on the VSC board.

This harness must be intact and properly connected

for the VSC board to operate. If the harness is

defective or not properly connected the EOC will

display a fault code F23.

When testing the VSC board the power supply from

the EOC to the board can be verified by measuring

the voltage between pins 1 & 6 (the two outside pins)

on connector P6 of the VSC board. This connector is

not wired in field applications and the pins are easily

accessed to test voltage while the other harness

connectors are in place and power is applied to the

range. Test for approximately 5 volts DC (+/- .5 volt)

on these two pins. If the EOC appears to operate

normally but the voltage to the VSC board is incorrect

or if there is no voltage present inspect and test the

wire harness and connectors between the EOC and

VSC board. If the harness is good then the EOC is

defective and should be replaced.

If the convection fan motor fails to run after the oven has been heating for six minutes test for voltage

to the convection fan motor. If no voltage is present then the failure is either in the VSC board, EOC ,

or the wiring in between. If there is proper voltage to the fan motor but it does not run then either the

motor windings are open or the motor is stuck. Test the continuity of the motor windings with an ohm

meter. There should be approximately 15 ohms of resistance in the convection fan motor windings. If

the windings test good inspect the fan blade and motor shaft to see if the motor will turn. Adjust the fan

blade to eliminate binding or replace the motor assembly if the motor shaft is seized.