Trouble shooting guide – Garland MASTER SERIES HEAVY DUTY RANGES, FRYERS & BROILERS User Manual
Page 31
Part # 4519069 Rev 01(7 Feb 14)
Page 31
TROUBLE SHOOTING GUIDE
Open Type Hot Plate, Solid Hot Top, Griddles And Broilers
PROBLEM
POSSIBLE CAUSE
SOLUTION
Burner fl ame too large.
Incorrect setting pressure or injector.
Check the setting pressure and injector.
Burner fl ame soft-yellow tip.
Insuffi
cient primary air.
Check aeration shutter setting.
Flame lifts off burner ports.
Excessive primary air.
Check aeration shutter setting.
Flame lights back to injector.
Excessive primary air.
Check aeration shutter setting.
Burner ‘pops’ when turned off .
Excessive primary air.
Check aeration shutter setting.
Delayed ignition
Pilot fl ame too small.
Check length of pilot fl ame.
Burner ports blocked
Clean burner
Incorrect aeration.
Check aeration shutter setting.
Incorrect setting pressure.
Check setting pressure.
Pilot burner will not ignite.
Pilot orifi ce blocked.
Clean jet.
Pilot adjusting screw closed
Open and adjust fl ame length.
No spark to pilots.
Disconnected or loose hi-tension wires.
Reconnect hi-tension wires.
Defective spark module.
Replace module.
Defective momentary switch.
Replace switch.
No power to range.
Check and restore power supply.
Pilot keeps going out.
Pilot fl ame too small.
Check pilot fl ame length.
Loose thermocouple connection.
Tighten connection.
Faulty thermocouple.
Replace thermocouple.
Faulty fl ame safety device.
Replace fl ame safety device.
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.
Standard And Convection Ovens
PROBLEM
POSSIBLE CAUSE
SOLUTION
Oven too hot or not hot enough.
Thermostat out of calibration.
Check calibration.
Burner fl ame too large.
Incorrect setting pressure or injector.
Check the setting pressure and injector.
Burner fl ame soft-yellow tip.
Insuffi
cient primary air.
Check aeration shutter setting.
Flame lifts off burner ports
Excessive primary air.
Check aeration shutter setting.
Burner ‘pops’ when turned off .
Excessive primary air.
Check aeration shutter setting.
Delayed ignition.
Pilot fl ame too small.
Check length of pilot fl ame.
Burner ports blocked
Clean burner
Incorrect aeration.
Check aeration shutter setting.
Incorrect setting pressure.
Check setting pressure.
Pilot burner will not ignite.
Pilot orifi ce blocked.
Clean jet.
Pilot adjusting screw closed
Open and adjust fl ame length.
No spark to pilots.
Disconnected or loose hi-tension wires.
Reconnect hi-tension wires.
Defective spark module.
Replace module.
Defective momentary switch.
Replace switch.
No power to range.
Check and restore power supply.
Pilot keeps going out.
Pilot fl ame too small.
Check pilot fl ame length.
Loose thermocouple connection.
Tighten connection.
Faulty thermocouple.
Replace thermocouple.
Faulty fl ame safety device.
Replace fl ame safety device.