Frymaster HLZ 22, HLZ 18 Operator Troubleshooting Guide, Symptom, Possible Cause, air tower

8. Operator Troubleshooting Guide

Symptom	Possible Cause
	No power
No computer display; no flow from	Circuit breaker out
	Low voltage
air tower	Bad fuse
	Bad transformer
	Hi-limit out
No flow from air tower	Bad latching relay
	RTD probe has failed. Isolate failed
	component by checking temperature of
	air and heater plate with the temperature
After 20 minutes of operation	display keys on the computer. The plate
computer display shows PROB	temperature should be within ± 15°F of
	setpoint. The air heat should be within ±
	25°F of setpoint. If both temperatures are
	good, the computer is likely bad.
After 20 minutes of operation	Plate heater, plate heater relay or RTD
computer display shows HI	are faulty.
After 20 minutes of operation	Air heater, air heater relay or RTD are
computer display shows LO	faulty

Frymaster L.L.C., 8700 Line Avenue 71106, P.O. Box 51000, Shreveport, Louisiana 71135-1000

318-865-1711 FAX 318-862-2394

Printed in the United States	Service Hotline	Page 8
	1-800-24-FRYER