While you wait for answers, we may have found some information which could help you.
Click here for Simpson Time Espritall elements on simpson neptune stove only go on high?
SIMPSON NEPTUNE ATLAS SERIES 4 ELEMENT ELECTRIC COOKING STOVE?
How can I fix my Simpson Neptune cooker?
SIMPSON NEPTUNE ATLAS SERIES 4 ELEMENT ELECTRIC COOKING STOVE?
Simpson Neptune - Grill Working But Not Bake Function ?
On my Simpson stove two of the hotplates wont turn off all the time ?