Duke FLEXIBLE BATCH BROILER User Manual download pdf (Page 7)

Does the Lower Burner cycle

on and off to maintain idle

temperature? (Typically 680 F)

NO

YES

Troubleshooting

FlowChart

YES

Consult next

page

YES

See Step 2

During a cook cycle, do the

upper burners cycle on and

off according to the

programmed cook cycle?

YES

No spark present at

an upper burner.

NO

Cycling of upper

burners does not

follow

programmed cook

cycle.

Spark and ignition

present on both

burners, but burner(s)

does not stay lit.

Spark present at

both burners, but no

ignition.

NO NO NO

No Gas. Ensure

incoming gas supply is

available.

Faulty Controller.

Ensure Controller

signals for heat to the

upper ignition module at

the appropriate periods

during the cook cycle.

YES

YES

YES

YES

Faulty igniter or

insufficient spark gap.

Ensure upper igniters

have sufficient spark

gaps and spark is not

arcing elswehere.

Faulty Controller.

Ensure Controller

signals for heat to the

upper ignition module.

Faulty ignition cable.

Ensure continuity

through affected ignition

cable.

Faulty ignition

module. Ensure upper

ignition module signals

to open lower gas

valve.

Faulty gas valve.

Ensure gas valve

solenoid energizes and

gas is present at the

upper burners.

Dirty orifice. Ensure

upper burner orifices

are clear of debris.

Dirty flame sensor. If

sparking continues,

regardless if ignition is

present, clean the lower

flame sensor.

Faulty Controller.

Ensure Controller

signals blower motor

relay to close.

Faulty blower motor

or relay. Ensure blower

motor energizes and

there is sufficient air

traveling to the upper

burners. Heavy

accumulation of grease

on the blower wheel

can have adverse

effects.

Faulty ignition

module. Ensure upper

ignition module is

signaling to spark and

open the upper gas

valve at the appropriate

periods during a cook

cycle.

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