43
42
Does
spark stop
when pilot
lights?
24 volts
across
terminals 2&3
at S8600?
Spark
across
ignitor/sensor
gap?
Y
Can you
hear
sparking?
*
Faulty
S8600
module
*
Break in
spark cable
insulation
*
Break in pilot
porcelain
*
Incorrect pilot
spark gap
*
Loose
connection in
spark cable
*
Loose
ground
connection
N
Pilot
lights?
Y
N
N
*
Defective
S8600 module
24 volts
across PV &
MV/PV at gas
valve?
*
Defective EI
wiring
harness.
N
*
Loose connection in
ignition cable or
ground wire
*
Pilot electrode
porcelain cracked
*
Pilot flame not
covering gap
between electrode
and grounding
strap
*
Low gas pressure
at gas valve inlet
*
Defective S8600
module
Main
burner
lights?
N
Y
24VAC
across
terminals 1&2
on S8600?
Y
N
N
*
Defective
S8600
module
24 volts
between MV &
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 do not light)
N
Y
Y
N
Y
Y
Y
*
Low line pressure
*
Plugged, kinked or leaking
pilot tubing
*
Plugged pilot orifice
*
Gas line not purged of air
*
Defective pilot assembly
*
Defective gas valve
Intermittent Ignition System Troubleshooting Chart
Caution
: Read page 36 before
attempting to use this chart
Summary of Contents for CWI Series
Page 15: ...15 14 FIGURE12 INDIRECTWATERHEATER BOILERSIDEPIPING FIGURE11 STANDARDBOILERPIPING...
Page 17: ...17 FIGURE15 BOILERPIPINGWITHCHILLER FIGURE14 ISOLATIONOFBOILERFROMSYSTEMWITHAHEATEXCHANGER 16...
Page 45: ...45 44...
Page 47: ...47 46...
Page 49: ...49 48...
Page 51: ...51 50 FIGUREA1 BASE HEATEXCHANGER FLUE COLLECTORASSEMBLY...
Page 53: ...53 52 FIGUREA2 JACKETINSTALLATION...
Page 55: ...55 54 FIGUREA3 TAPPING LOCATIONS SEE TEXT FOR TAPPING USES...