Crown Boiler - page 35

35
33
Does
sparkstop
when pilot
lights?
24 volts
across
terminals 2&3
at S8600?
Spark
across
ignitor/sensor
gap?
Y
Can you
hear
sparking?
*Faulty
S8600
module
*Breakin
sparkcable
insulation
*Breakin pilot
porcelain
*Incorrect pi lot
sparkgap
*Loose
connection i n
sparkcable
*Loose
ground
connection
N
Pilot
lights?
Y
NN
*Defective
S8600 module
24 volts
across PV &
MV/PV at gas
valve ?
*Defective EI
wiring
harness.
N
*Loose connect ion in
ignition c able or
ground wire
*Pilot electrode
porcelain cracked
*Pilot flame not
covering gap
between elect rode
and grounding
strap
*Low gas pressure
at gas valve inlet
*DefectiveS8600
module
Main
burner
lights?
N
Y
24VAC
across
terminals 1&2
on S8600?
Y
N
N
*Defecti ve
S8600
module
24 volts
between M V &
MV/PV on gas
valve ?
*Defective
gas valve
*Defective EI
harness
END
START
(24 volts is present across 5 and 6 on S8600
module, but main burners donot light)
N
Y
Y
N
Y
Y
Y
*Low line press ure
*Plugged, kink ed or leaking
pilot tubing
*Plugged pilot orifice
*Gas line not purged of ai r
*Defectivepilot assembly
*Defective gas valve
Intermittent Ignition System Troubleshooting Chart
Caution: Read page 29 before
attempting to use this chart