Garland ST286-E - Convection Ovens Only Troubleshooting; Open Burner Troubleshooting

Part # 1382683 (01/08)Page 24
TROUBLESHOOTING Continued
Convection Ovens Only
Problem Possible Cause Solution
Cook/Cool Down switch set to “Cook”
position. Light o. Motor not working
No power to oven Check power supply
Defective Cook/Cool Down switch Replace switch
Faulty wiring Check condition of wires and all
connections
Cook/Cool down switch set to “Cook”
position. Light on. Motor not working
Defective Cook/Cool Down Switch Replace switch
Defective door switch Replace switch
Faulty wiring Check conditions of wires and all
connections
Defective motor Replace motor
Oven door open Close door
Door switch out of alignment. Align door switch
Noisy motor Blower wheel rubbing on oven bae Adjust blower wheel
Blower wheel loose on motor shaft Retighten blower wheel
Defective motor Replace motor
Cook/Cool down switch set to “Cool
Down” position. Light on. Motor not
working
Defective Cook/Cool Down switch Replace cook/Cool Down switch
Defective door switch Replace door switch
Faulty wiring Check conditions of wires and all
connections.
Open Burner – Models not Equipped with Flame Supervision Device
Problem Possible Cause Solution
Burner ame too large Incorrect gas pressure Check gas pressure
Burner ame soft – yellow tip Insucient primary air Adjust air shutter
Flame lifts o burner ports Excessive primary air
Flame burns back to orice
Burner “pops” after shutting o
Delayed ignition Pilot ame too small Adjust pilot ame
Burner ports blocked Clean burner
Incorrect gas/air mixture Adjust air shutter
Incorrect gas pressure Check gas pressure
Pilot burner will not ignite Pilot tap turned o Turn pilot tap on
Pilot orice blocked Clean pilot orice
Pilot tap blocked Clean pilot tap plug