STIRRER MOTOR
NOT WORKING.
Check that the motor shaft turns freely. If it is jammed the motor
internal cut-out may have tripped. Switch unit off and free motor. Allow
time for the motor to cool. This will reset internal cut-out. If this is not
the fault the motor winding is probably open circuit. Disconnect motor
and check continuity of winding. If the winding is open circuit the motor
will have to be changed, see 6.9.
THE DISPLAY DOES
NOT CHANGE TO SET
TEMPERATURE AND
FLASHES WHEN S
BUTTON IS PRESSED.
Ensure button is making good contact with track on pcb.
Replace IC9 microprocessor.
SET TEMPERATURE
WILL NOT CHANGE
WHEN TURNING SET
TEMP. KNOB.
Replace encoder on pcb.
Replace IC9 microprocessor.
HEATER WILL NOT
TURN OFF WHEN
LIQUID
TEMPERATURE IS
REACHED.
Check triac by unsoldering one end of R6 on Power pcb. Triac
should turn off. If it stays on it must be replaced.
Replace IC1 & IC2 on Power Supply Board
HEATER WILL NOT
TURN ON WHEN SET
TEMPERATURE IS
ABOVE LIQUID
TEMPERATURE.
Check heater resistance
Check probe resistance.
Triac, IC1, IC2 (all on Power pcb) may need changing. .
GD100/GD120
Part No. 17592/Issue 1 July 2002
Page 11
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