Electrolux NEXT GEN, Service Manual

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L1 N
L1
H1
1A
2A
H2
L2
Indicator light
Element
Troubleshooting:
There are four ways a warming zone system with a stan-
dard 120 VAC infinite switch can fail:
1. The element does not heat.
2. The switch does not cycle the element off and
on when set to a position other than high.
3. The element operates correctly, but the
indicator light does not glow.
4. Indicator light glows with all the infinite switches
in the off position.
NOTE: If the indicator light glows very dimly
with the switches in the off position, this is caused
by a capacitive feed over in the wiring and can be
corrected by connecting a 100,000 Ohm 1/4 watt
resistor in parallel with the light.
Element does not heat:
Checking the system with a Voltmeter, if the element
does not heat up:
1. Remove the back panel of the backguard to
expose the switch terminals.
2. With a Voltmeter set for AC on a scale higher
than 120 Volts measure the voltage drop
between terminals L1 and L2. If the meter
reads zero the wiring between the main
terminal block of the range and the switch is
open. If the meter reads line to neutral
voltage (around 120 VAC) go to step 3.
3. With the switch turned on to the high position
measure the voltage drop between terminals
H1 and H2. If the meter reads zero the switch
is defective. If the meter reads line to neutral
voltage the switch is good. Go to step 4.
4. Raise the top and locate the two terminals on
the element with the wires from H1 and H2.
Measure the voltage drop between the two
terminals. If the meter reads zero the wires
between the switch and the element are open.
If the meter reads line to neutral (120 VAC) the
element is defective.
boards or the harness between the mother board and
the user interface boards is defective. Remove and Ohm
out the harness. If the harness checks good, reinstall
the harness and replace one of the user interface board
with a new or known good board. Turn one of the top
elements on. If the element operates normal replace
that user interface board. If the display remain blank,
turn the top element off, reinstall the board that was
replaced and relpace the other user interface board. Turn
one of the top elements on. If the element operates
normal, replace that user interface board. If the display
remains blank, recheck the harness between the mother
board and the user interface boards. If you do not hear
the beep, replace the mother board.
Element not heating:
If an element or portion of an element does not heat but
the display shows the correct indication, either the mother
board, the element, or the element wiring is defective.
To determine which is defective:
1. Turn all surface element switches off .
2. Check the wiring diagram on the range to see
which terminal on the mother board is wired to
that element or portion of that element.
3. With a voltmeter measure the voltage drop
between that terminal and neutral on the
mother board. If the meter reads line to neutral
voltage (120 VAC) the mother board is
defective. If the meter reads zero the element
or wiring to the element is defective.
4. Turn the switch to high, raise the cooktop, and
measure the voltage drop across the element.
If the meter reads line to line voltage (240 VAC)
the element is defective. If the meter reads
zero the wiring is bad.
Warm and serve zone:
The warm and serve zone circuit on smooth top ranges
uses a line to neutral (120 VAC) standard infinite switch,
a line to neutral (120 VAC) element with a built-in limiter
to protect the glass, and an indicator light.