Garland MASTER SERIES HEAVY DUTY RANGES, FRYERS & BROILERS - Manual (Page 32)

Part # 4519069 Rev 01(7 Feb 14) Page 32
TROUBLE SHOOTING GUIDE continued
PROBLEM POSSIBLE CAUSE SOLUTION
Low millivolt output on open circuit
tests. Pilot fl ame too small. Adjust pilot fl ame length.
Defective thermocouple. Replace thermocouple.
Low millivolt output high in open
circuit test, but low in closed circuit test.
Faulty fl ame safety device. Replace fl ame safety tap.
Millivolt output high on closed circuit
test, but blame safety tap will not stay
open.
Faulty fl ame safety device. Replace fl ame safety tap.
Door will not stay closed.
Insuffi cient tension on springs. Adjust tension.
Broken spring. Replace spring.
Broken hinge link. Replace.
Door will not stay open. Too much tension on springs. Adjust tension.
Door not closing on one side. Door warped. Replace door.
Door not level or low in center.
Trunnion support loose. Level and tighten.
Trunnion support worn. Replace.
Standard Oven Only
PROBLEM POSSIBLE CAUSE SOLUTION
Burner fl ame shuts off when oven is at
required temperature. Thermostat has incorrect bypass rate. Adjust bypass or replace thermostat.
Convection Base Oven Only
PROBLEM POSSIBLE CAUSE SOLUTION
COOK/COOL DOWN switch set to COOK
position. Light off . Motor working.
No power to oven. Check power supply
Defective COOK/COOL DOWN switch. Replace switch.
Faulty wiring.
Check condition of wires and
connections.
COOK/COOL DOWN switch set to COOK
position. Light off . Motor not working.
Defective COOK/COOL DOWN switch. Replace switch.
Defective door switch. Replace switch.
Door switch out of alignment. Align switch.
Oven door open. Close door.
Faulty wiring.
Check condition of wires and
connections.
Defective motor. Replace motor.
COOK/COOL DOWN switch set to COOK
position. Light on. Motor not working Main ON-OFF/pilot gas valve set to OFF. Turn gas valve to FULL ON position.
Gas solenoid valve not opening. Defective thermostat.
Thermostat set to temp. Pilot on but
oven not heating.
Defective solenoid valve. Replace solenoid.
Noisy motor.
Blower wheel rubbing on oven baffl e. Adjust blower wheel.
Blower wheel loose on motor shaft. Tighten blower wheel.
Defective motor. Replace motor.
COOK/COOL DOWN switch set to COOL
position. Light on. Motor not working
Defective COOK/COOL DOWN switch. Replace switch.
Defective door switch. Replace switch.
Door switch out of alignment. Align switch.
Faulty wiring.
Check condition of wires and
connections.