Service manual

-15-
Revision 1/F3503
6.1.7 NO HEAT
No power to thermostat
Check voltage to terminal P (top terminal) on
oven thermostat. If there is no voltage then
check wiring.
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
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.
6.1.8 NO TEMPERATURE CONTROL
Thermostat faulty
With thermostat in ‘off’ position (knob vertical),
slowly turn thermostat up until heating
indicator just comes on. Wait for heating
indicator to cycle off. If indicator has not
cycled off after 10 minutes then thermostat is
faulty—replace.
NOTE: Thermostat may cycle on and off with
the knob set to the ‘off’ position if the oven
temperature is below 20°C.
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 170°C and
205°C or 335°F and 400°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
±18°C or 32°F. Under no load conditions the
oven runs slightly hotter than the selected
thermostat temperature.
6.1.10 FAN ELEMENT NOT WORKING
Element faulty (blown)
With the thermostat on and heating check
voltage across fan element terminals at rear
of oven. If the voltage is correct then check
the current draw of element. If there is no
current draw then element is faulty—replace.
NOTE: Correct fan element current draw:
220-240 V: 10A ± 1.5A
Thermostat faulty
If there is no voltage to element terminals then
check voltage is being supplied to fan element
from terminal 1 on the thermostat. If no
voltage at 1 then check for voltage at terminal
P. If power to P (and none to 1), then the
thermostat is faulty—replace.
Indicator faulty
With the thermostat on and heating, check the
voltage across the indicator terminals. If the
voltage is correct then the indicator is faulty—
replace.
If there is no voltage then check wiring.
6.1.11 NO THERMOSTAT HEATING
INDICATOR