Frymaster H17SC, H22SC, H14SC manual Problem, Corrective Action, Probable Causes

Problem Probable Causes

Fryer repeatedly

cycles on and off Fryer is in melt-cycle mode. when first started.

Fryer does not heat	Drain valve is open.
after filtering.

Fryer heats until	Temperature probe or controller has
high limit trips with
	failed.
heat indicator ON.

Fryer heats until
high limit trips	Contactor or controller has failed.
without heat
indicator ON.

Fryer stops heating	The high limit thermostat or
with heat indicator
	contactor has failed.
ON.

Corrective Action

This is normal. The standard operational mode for the controller is for the elements to cycle on and off until the temperature in the frypot reaches 180ºF (82ºC). The purpose of the melt-cycle is to allow controlled melting of solid shortening to prevent scorching and flash fires or damage to the element.

This fryer is equipped with a drain safety switch that prevents the heating element from being energized if the drain valve is not fully closed. Verify that the drain valve is fully closed.

If available, substitute a controller known to be working for the suspect controller. If the substitute controller functions correctly, order a new controller. If substitution of the controller does not resolve the problem, the most likely cause is a failed temperature probe.

If available, substitute a controller known to be working for the suspect controller. If the substitute controller functions correctly, order a new controller. If substitution of the controller does not resolve the problem, the most likely cause is a contactor failed in the closed position.

The fact that the heat indicator is ON indicates that the controller is functioning properly and is calling for heat. The high limit thermostat functions as a normally closed switch. If the thermostat fails, the "switch" opens and power to the elements is shut off. If the contactor fails to close, no power is supplied to the elements. Determining which component has failed is beyond the scope of operator troubleshooting. Call FASC.

6-3