Fryer not turning off and overheating oil
When the thermostat dial is turned off the flame continues to burn, the oil then overheats and boils. The oil always overheats although the fryer not turning off only happens occasionally.
Kitchen Appliances - Others - Pitco Frialator
Answers & Comments
That can happen either because of a faulty thermostat, a faulty electronic control, or because of a contact in thermostat wiring. A defective gas valve would be quite unusual.