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Part Number 550-142-300/0520
54
CGa Series 3 Gas-Fired Water Boiler — Boiler Manual
11b
Troubleshooting — spark-pilot boilers (continued)
CHART 4 –– Spark-ignited pilot –– FLAME & POWER lights flashing
–– Usually indicates ame sensed when it shouldn’t be there ––
Electrical shock hazard — Wherever you see
▲
TURN OFF POWER
▲
, follow the instructions. Failure to follow
instructions could result in severe personal injury, death or substantial property damage.
Are manual main shutoff valve and gas valve open ?
No Yes
• Turn off power to boiler at service switch or breaker.
• Wait at least 45 seconds.
• Turn on power to boiler.
• Restart boiler, following Operating instructions in this
manual (Section 9b) or on boiler label.
• Look through the pilot inspection port to see if the pilot is
burning.
Is pilot burning?
No Yes
• Leave main manual gas valve closed.
• Turn off power to boiler at service switch or breaker.
• Wait at least 45 seconds.
• Turn on power to boiler.
• Restart boiler, following Operating instructions in this
manual (Section 9b) or on boiler label.
Do FLAME and POWER lights still ash ?
No Yes
• Replace gas valve.
• Retest.
Are FLAME and POWER lights ashing?
No Yes
• Replace control module.
• Retest.
• Allow boiler to continue cycling.
Are FLAME and POWER lights ashing?
No Yes
• Replace control
module.
• Retest.
• Boiler may now be
operating
normally.
• Perform start-up
procedures in
boiler manual to
verify proper
operation.
• Replace control
module.
• Retest.
• Boiler should now
operate normally.
• Original ashing
FLAME light
caused by gas
valve not
operating properly.
• See normal
sequence of
operation,
Figure 24,
page 35.
•
▲ TURN OFF POWER ▲
to boiler at service switch or
breaker.
• Open main manual gas
valve.
• Turn on power to boiler at
service switch or
breaker.
• Restart boiler per
operating instructions.
• Perform start-up
procedures in boiler
manual to verify proper
operation.
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