Merrychef eikon
®
e2s service and repair manual
30
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3 Technical data
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Description
Features
Function
Rating
Trouble shooting
Convection Motor IP
Thermal Switch within
the Convection Motor.
Two grey wires.
Normally Closed,
monitors convection
fan motor internal
temperature. Opens
when the motor gets
too hot
Breaks control safety
circuit control voltage
signalling SRB to de-
energise heating and
microwave circuits
based on the
temperature inside
convection fan motor
windings. The oven
shuts down and
displays E104 or
OVERHEAT warning
(E115) during a cook
cycle with microwave.
Switched Voltage;
12VDC
Resistance if open O.L.,
if closed = 0
W
Opens at 150
o
C (300
o
F)
Check continuity
through switch.
Check SRB connections
& plugs on X18c, X18d,
X18e and convection
fan motor IP
connections. Follow
Convection Motor
Trouble shooting
checks
Overheat Thermostat
(Over Temp Stat /
Cavity Stat)
Manual reset, capillary
tube, normally closed,
monitors cavity
temperature. Opens
when the cavity
temperature gets too
hot
Breaks control safety
circuit control voltage
signalling SRB to de-
energise heating and
microwave circuits
based on the
temperature inside
oven cavity. The oven
shuts down and
displays E104 or
OVERHEAT warning
(E115) during a cook
cycle with microwave.
Switched Voltage;
12VDC.
Resistance if open O.L.,
if closed = 0
W
.
Opens at 300
o
C (570
o
F)
[310
o
C cavity
temperature]
Check continuity
through switch.
Check for 12VDC on
both sides of switch.
Terminals are normally
closed, if open, reset
thermostat and test
oven for proper
operation
Check SRB connections
& plugs on X18c, X18d,
X18e.
Check convection fan
motor IP.
Check SRB LED
Magnetron Limit Stat(s) Automatic reset.
Monitors surface
temperature. Normally
Closed, opens when
the magnetron surface
temperate gets too hot
Breaks control safety
circuit control voltage
signalling SRB to de-
energise heating and
microwave circuits
based on the
temperature of the
magnetron case. The
oven shuts down and
displays E104 or
OVERHEAT warning
(E115) during a cook
cycle with microwave.
Switched Voltage;
12VDC.
Resistance if open O.L.,
if closed = 0
W
.
Opens at 125
o
C (257
o
F),
automatically closes
once magnetron case
temperature drops to
80
o
C (177
o
F)
Check continuity
through switch(es).
Check for 12VDC on
both sides of
switch(es).
Allow magnetron to
cool before testing.
A dirty air filter is a
major root cause of
this failure
Check SRB connections
& plugs on X18c, X18d,
X18e
Check convection fan
motor IP. Check SRB
LED
Heating Element
Sheath resistive
heating element,
sealed terminal ends.
Provides heat for the
oven cavity. When air
passes over the
surface, heat is
transferred into the air.
Supply Voltage 230VAC
pulsed from SRB to
control power
(wattage). Resistance:
19
W
between
terminals, (any
terminal to ground:
open). Maximum
power 2200W and 9-
10A at 230VDC
Check F1
Check Neutral
connections, EMI Filter.
Check resistance
ratings. Check SRB
terminal connections
X2.1 & X2.2. Check
current draw on ‘Visual
View’
Check for opens, shorts
& grounds. Check SRB
LED
