IBC SL 14-115 G3, Installation And Operating Instructions Manual

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INSTALLATION AND OPERATION INSTRUCTIONS
5-8
SL 20-115 G2 MODULATING GAS BOILER
SL 14-115 G3, SL 20-160 G3, SL 30-199 G3 MODULATING GAS BOILERS
5.3.2 Ignition Problems
SYMPTOM DIAGNOSIS REMEDY
NOISY SPARK WHEN
IGNITING
Ignition lead is not firmly
connected.
Reconnect ignition lead.
Contaminants/moisture
on igniter probe/flame
sensor.
Ensure probe is dry by re-running post-purge;
otherwise, clean or replace igniter probe.
BOILER RUMBLES WHEN
IGNITING.
Fluctuating gas
pressure/ gas pressure
too high/too low.
Check CO
2
level via analyzer.
Check for proper gas
piping.
Check pressure with manometer during ignition.
BOILER WILL NOT ATTEMPT
TO IGNITE. FAN AND PUMP
ARE OPERATING NORMALLY.
No power to ignition
control module.
• Check system wiring.
• Check air reference tubing.
Igniter probe/flame
sensor disconnected.
Reconnect probe.
Defective Control
Module.
Check ignition output from control module.
BOILER WILL NOT ATTEMPT
TO IGNITE. FAN AND / OR
PUMP ARE OFF DISPLAY
NOT ILLUMINATED
No power to boiler. Check line voltage .
Defective transformer. Check transformer. Reconnect or replace as needed.