-19-
Revision 3/F3542
Timer not switching on buzzer
With timer in zero position, check voltage to
input and output terminals of timer. If there is
no voltage at input terminal then check wiring.
If no voltage at output terminal then timer is
faulty—replace.
NOTE:
Buzzer and time up indicator will
continue until the timer is manually switched
off (to vertical position).
6.1.7 NO HEAT
No power to thermostat - E25
Check voltage to terminal P (top terminal) on
oven thermostat. If there is no voltage then
check wiring.
No power to thermostat - E25B
Check voltage to terminal 5 of oven
thermostat. If there is no voltage then check
wiring.
With door closed, check voltage to terminal 6
of oven thermostat. If no voltage, check
voltage to terminal NO of door microswitch. If
there is no voltage then refer 6.1.2,
microswitch faulty. If there is voltage then
check wiring to thermostat.
Thermostat faulty - E25
Set thermostat to 200°C or 400°F. Check the
voltage out of terminal 1 on the thermostat. If
there is no voltage then the thermostat is
faulty—replace.
If the voltage is correct and the heating light is
on then check all wiring to elements.
6.1.6 60 MINUTE TIMER NO TIME UP
INDICATOR
Indicator faulty
With the timer in the zero position, check for
voltage across the indicator light. If correct,
then the indicator light is faulty—replace.
If there is no voltage then check wiring.
Thermostat faulty - E25B
Set thermostat to 200°C or 400°F. With door
closed, check the voltage out of terminal 2 on
the thermostat. If there is no voltage then the
thermostat is faulty—replace.
If the voltage is correct and the heating light is
on then check all wiring to elements.
Heating relay faulty—E25B
Set thermostat to 200°C or 400°F. With door
closed, check voltage to terminal A of heating
relay. If no voltage check wiring. If correct
voltage to A, heating relay is faulty—replace.
6.1.8 NO TEMPERATURE CONTROL
Thermostat faulty
With thermostat in ‘off’ position (knob vertical),
slowly turn thermostat up until heating indica-
tor just comes on. Wait for heating indicator
to cycle off. If indicator has not cycled off af-
ter 10 minutes then thermostat is faulty—
replace.
NOTE:
E25 thermostat may cycle on and off
with the knob set to the ‘off’ position if the
oven temperature is below 20°C.
Heating relay faulty—E25B
With power switch off on control panel, check
for voltage at terminal 6 of heating relay. If
there is voltage then the heating relay is
faulty—replace.
6.1.9 SLOW RECOVERY
Thermostat out of calibration
Place an accurate digital thermometer probe
in centre of oven. Set thermostat to 180°C or
355°F. Close the oven door and allow oven
thermostat to cycle on and off twice. Record
oven centre temperature for the next
thermostat on and off cycle. The thermostat
should cycle on and off between 165°C and
195°C or 330°F and 385°F when set to the
above temperature. If oven temperature is
outside these ranges, then the thermostat
requires recalibration.
NOTE:
Thermostat cycling span should be
±15°C or 27°F
Buzzer
Buzzer Terminals
Figure 6.1.2
Summary of Contents for E25
Page 1: ... 1 Revision 3 F3542 SERVICE MANUAL E25 CONVECTION OVEN ...
Page 30: ... 30 Revision 3 F3542 7 ELECTRICAL CIRCUIT SCHEMATIC 7 1 E25 ...
Page 31: ... 31 Revision 3 F3542 7 2 E25B ...
Page 32: ... 32 Revision 3 F3542 8 ELECTRICAL WIRING DIAGRAM 8 1 E25 ...
Page 33: ... 33 Revision 3 F3542 8 2 E25B ...
Page 36: ... 36 Revision 3 F3542 11 PARTS DIAGRAMS 11 1 MAIN ASSEMBLY E25 ...
Page 38: ... 38 Revision 3 F3542 11 2 MAIN ASSEMBLY E25B 110V ONLY ...
Page 46: ... 46 Revision 3 F3542 ...
