Part # P143 (11/10/08)
Page 13
TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSE
SOLUTION
Burner flame too large .
Incorrect setting pressure or injector .
Check setting pressure and injector .
Burner flame soft - yellow tip .
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
It is essential that the instructions in this booklet are strictly
followed for the safe and economical 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 .
