Step1: Turn off gas supply and electrical power before starting work.
Step2: Allow fryer or appliance to cool completely.
Step3: Remove access panel to expose gas control assembly.
Step4: Label and disconnect inlet, outlet, and pilot gas lines.
Step5: Remove faulty safety control valve from mounting bracket.
Step6: Install new valve rated for in correct flow direction.
Step7: Reconnect all gas lines tightly and check for leaks.
Step8: Restore gas and power, then test ignition and safety shutoff operation.