10.6 Plate Heater
Symptom: No heat when voltage is applied.
Symptom: Overheats
Tests:
•With power removed from the HLZ , measure resistance between terminal 4 (white wires) on the latching relay and terminal 4 on the plate heater relay. The reading should be 215 to 230 ohms on an HLZ 18;
10.7 Air Heater
Symptom: No heat when voltage is applied.
Symptom: Overheats
Test:
•With power removed from the HLZ , measure resistance between pin 4 (white wire) on the latching relay and terminal 4 on the air heater relay. The reading should be between 18 and 26 ohms on a 208V unit and 25 and 33 ohms on a 240V unit. Also, check for continuity to the chassis. Resistance seen there indicates a
chaffed or shorted wire.
10.8 Latching Relay
Symptom: Computer calls for heat (dot illuminated). No heat from plate and blower doesn’t operate.
Test:
•With power removed from the HLZ and the wire removed from pin 1 or 0 of the latching relay, measure resistance between pins 1 and 0. It should be between 79 and 89 ohms.
10.9 Blower
Symptom: No airflow.
Symptom: Unit overheats; displays PROB.
Tests:
The latching relay is positioned in the HLZ with the 0 and 1 terminals facing the front of the unit.
Frymaster L.L.C., 8700 Line Avenue 71106, P.O. Box 51000, Shreveport, Louisiana
Printed in the United States | Service Hotline | Page 17 |
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