The Surface Element Limiter - KitchenAid KESC300H WH Technical Education

The surface element limiter is a safety device
that is mounted in the surface element circuit .
MAINTOP SENSING ROD
INSULATION
L1
BK
BI - METAL SW FAN N.O.
Y
BI-METAL SW
AMBIENT N.C.
BK
DOOR
SW.
OVEN
TEMP
SENSOR
BK
W
BK
GND
BK
L1 L2
P
LF
H1 H2
BK
2A
1A
BU
SURF
IND.
LIGHT
N

THE SURFACE ELEMENT LIMITER

HEATING COIL
LIMITER
ELEMENT
TERMINALS
LIMITER
TERMINALS
GND
M
Y W
OVEN CONTROL
P4-3 W
BK TRANSFORMER
P4-1
Y
P3-3
P4-4 R
OVEN LIGHT
RELAY
Y
P3-4
BR
P4-5
V
LATCH RELAY
P3-6
BU
P3-1
V
BU
P3-7
P3-2
P2-1 V
P2-2
BROIL RELAY
P2-3
P2-4
OR P6
R
BAKE RELAY
G
P3-5
L1 L2 L1
P P
LR RF
H1 H2 H1
Y
BK
Y BR
2B 2A 2B
1B 1A 1B
V
V
BU
HOT SURFACE
LR
LF
IND. LIGHTS
The limiter monitors the temperature of the
cooktop glass in two ways:
a) Circuit 1A to 2A, which is a normally-
closed (N.C.) switch, opens at 1025˚F
and protects the ceran glass from heat
damage.
b) Circuit 1B to 2B, which is a normally-
open switch (N.O.) switch, closes and
turns on the hot surface indicator lights
if the temperature of the cooktop is
greater than 150˚F. This switch will re-
main closed until the ceran glass is
warm enough to touch.
L2
R
OVEN LT.
W
DOOR LOCK
SOLENOID W
N.O.
COM
BROIL ELEMENT
BU
DOOR
LATCH SW.
R
DLB RELAY
BAKE ELEMENT
R
R
L2 L1 L2
P
RR
H2 H1 H2
BU
BR
R
2A 2B 2A 2B
1B
1A 1A
1B
V
V
BU
SURF
IND.
LIGHT
RF RR
L2
SUR. L1
N
IND.
P
LIGHT
INF. SWITCH
H1 H2
(OPTIONAL)
COIL ELEMENT
N
3-4
2A 2B
2A 2B
1B
1A
1A 1B