
5
Fault Finding
16
Blue Seal Evolution Series Electric Cooktops © Copyright Moffat Ltd, April 2016
Amendment 4
5.2 Fault Diagnosis
Energy regulator faulty
Check voltage to terminal P1. If no voltage check wiring and
fuses if fitted.
Check for continuity from terminals 4 to neutral stud. If no
neutral supply, check wiring.
With switch in ‘off’ position there should be no voltage at
terminal 2 (open circuit between terminal P1 and 2). With
control set to a LO to HI setting terminal 2 should be switched
on. If not then the energy regulator is faulty - replace the
energy regulator.
Figure 5.2.1a
The above checks can be made with or without the electrical
supply switched ‘On’, however with electrical supply switched
‘On’, the terminal 2 element supply will cycle ‘On / Off’ at
different time ranges dependent on control setting.
Lower settings will give longer off times and shorter on times,
whilst higher settings will give shorter off times and longer on
times.
Griddle thermostat faulty
Check that there is voltage to terminal 2 of the thermostat.
If no voltage then check wiring and fuse.
Set thermostat to 300°C. Check the voltage out of terminal 1 of
the thermostat.
If the voltage is correct and the heating indicator is ‘On’, check
all wiring to element.
Element faulty
Disconnect all wires from the element and check the resistance
(ohms) across the element when cold.
Griddle Element 16.0 ohms.
An open circuit indicates a faulty element coil - replace element.
If above readings are correct, check insulation resistance of
each element coil by checking each element terminal to earth /
ground or conduct a megger or dielectric withstand test on the
element.
A short to earth / ground indicates a faulty element - replace
the element.
If element passes above tests, check the wiring.
Element faulty
Disconnect all wires from the element and check the resistance
(ohms) across the element when cold.
Radiant Element 24.0 ohms.
Solid Element 28.8 ohms.
An open circuit indicates a faulty element coil - replace element.
If above readings are correct check insulation resistance of each
element coil by checking each element terminal to earth /
ground or conduct a megger or dielectric withstand test on
element.
A short to earth / ground indicates a faulty element - replace
the element.
If element passes above tests then check the wiring.
Figure 5.2.2b
5.2.1 One Hob Element Does Not Operate / No
Heat Control
5.2.2 Griddle Does Not Operate