Gas Fryer unit cuts out intermittently. pilot goes out. pilot was lit when arrived. cycled thermostat, allowed to heat, unit is working, heating. checked millivolts off thermopile, is 650, okay, while heating, tapped on hi limit and everything cuts out. isolated hi limit to verify. drained oil from vat, replaced hi limit, refilled with oil. Turned on and allowed to heat. New hi limit is cutting out, bypass hi limit to check gas valve. is okay. Reconnected hi limit, will return with another new hi limit. 01-07-19 Checked into location. drained oil from unit. remove hi limit. install new hi limit. reassemble. return oil to vat. turn on and allow to heat, verify thermostat is cycling at correct temps, okay for use,