Dunkirk Helix VLT Vertical Laser Tube, Wall Hung Modulating Condensing Boiler - Manual (Page 57)

57
Read flue gas temper
ature on User
Interface.
Is temper
ature higher than 200°F ?
YES
NO
Boiler is o
ver fired. W
ait
for boiler to cool. Fix
flow r
ate problem if an
y,
purging all air out of the
system.
Replace Flue Gas Sensor
Replace Control Module
Use thermal couple to measure flue gas temper
ature through sampling
port. Is the measured temper
ature
and flue temper
ature reading on User
Interface significantly different?
YES
NO
Blocking Error Flue Gas Error
13 - TROUBLE SHOOTING
E
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