Part # 4521357 (12/07)
Page 15
FAULT FINDING
PROBLEM
POSSIBLE CAUSE
SOLUTION
Burner flame too large .
Burner flame soft - yellow tip .
Incorrect setting pressure or injector .
Check setting pressure and injector .
Insufficient primary air .
Check primary aeration for blockage .
Delayed Ignition
Pilot burner flame too small .
Check pilot flame adjustment .
Burner ports blocked
Clean blocked burner ports .
Incorrect setting pressure .
Check setting pressure .
Pilot burner will not ignite
Pilot orifice blocked .
Clean pilot jet .
Pilot adjusting screw closed .
Open pilot adjuster .
Pilot Keeps Extinguishing .
Pilot flame too small .
Check pilot .
Loose thermocouple connection .
Tighten connection .
Faulty thermocouple .
Replace thermocouple .
Faulty flame safety device .
Replace flame safety device .
Low millivolt output on open circuit
test .
Pilot flame too small
Adjust pilot flame length .
Defective thermocouple .
Replace thermocouple .
Millivolt output high in open circuit test
but low in closed circuit test .
Faulty flame safety device
Replace flame safety tap
Millivolt output high on closed circuit
test but flame safety tap will not stay
open .
Faulty flame safety device
Replace flame safety tap .
SAFETY CONCERNS
It is essential that the instructions in the booklet be strictly
followed for the safe and economically operation of the
equipment . If it is known or suspected that a fault exists on
the appliance then it must not be used until the fault has
been rectified by a competent person .
Содержание G24 SERIES
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