-27-
Revision 5/F3534
©
Moffat Ltd, April 2005
Turbofan Convection Oven
Indicator faulty
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.
6.1.18 NO HOLD INDICATOR
‘Roast ‘n Hold’ switch faulty
Check if the switch latches. If the switch does not
latch then the switch is faulty—replace.
With the switch latched, check voltage across
terminal 1 to terminal 3 or 4. If there is no voltage
then check for fault in wiring.
Check voltage across terminal 2 to terminal 3 or
4. If there is no voltage then switch is faulty—
replace.
NOTE:
When the switch is latched, it should
illuminate if operating correctly.
Timer faulty
Check the voltage at terminal 3 of timer, with
timer in hold position. If the voltage is correct
then check wiring.
If there is no voltage then check voltage at
terminal 1 of timer. If there is voltage at 1, but no
voltage at terminal 3 with timer in hold
position, then timer switch is faulty—replace.
Hold thermostat faulty
With the power switch on and illuminated, ‘Roast
‘n Hold’ switch on and illuminated, and the roast
(180 minute) timer set to hold, check that the hold
indicator is illuminated.
With a cold oven (ie room temperature) check
that the top outer and bottom oven elements only
are heating. Test the voltage across the bottom
element and top element terminals at the rear of
oven. If the voltage is correct then refer Fault:
Bottom element not working (trouble shooting
section).
NOTE:
If the main thermostat is set to off
(vertical) position and ‘Roast ‘n Hold’
mode is selected, then only the bottom
element will heat.
If there is no voltage at the element terminals,
check the voltage at terminal 2 (top) of the hold
thermostat at bottom rear of control panel (fig
6.3.12). If there is no voltage then check wiring.
If the voltage is correct, and the thermostat is
adjusted above oven temperature, then check for
output voltage at terminal 1 (bottom). If there is
no voltage and the thermostat will not switch on
then the thermostat is faulty—replace.
If the voltage is correct but the bottom element is
not working then check wiring.
6.1.19 HOLDING TEMPERATURE INCORRECT
the hold relay. If there is voltage at 7, but
none at 4 (and the relay is energised) then
relay is faulty - replace. If no voltage at 7 then
check wiring.
To Serial Number 232053:
If no voltage at terminal 4, then check mini
contactor behind control panel is latched to the
‘1’ position. If contactor is in ‘1’ position then
check wiring.
If contactor is in ‘0’ position when ‘Roast ‘n
Hold’ switch illuminated then check the voltage
across terminals A1 and A2 of mini contactor
(fig 6.1.3). If the voltage is correct but the
contactor in the off (‘0’) position then the
contactor is faulty—replace.
If there is no voltage across A1 and A2 then
check wiring.
