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9.3.3 Test Thermocouple
Turn off gas and electrical supply.
Remove the hob top but replace the burner head on the afflicted burner.
Disconnect the thermocouple from the gas valve.
Set your multimeter onto DC millivolts.
Attach with alligator clips to outer copper sheath (+) and the aluminium lump on the end (-).
Turn on gas, light burner (you will have to keep holding the knob down).
Hold the thermocouple tip in the flame and observe the meter. If no reading, - replace the
thermocouple. If it reads approximately greater than 20mV it's working OK - replace the gas valve.
(Could check by swapping a coil/magnet from one of the other valves.)
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