IBC VFC 15-150

5-11
TROUBLESHOOTING
VFC 15-150 - VFC 45-225 MODULATING GAS BOILERS
5.3.5 Miscellaneous
SYMPTOM DIAGNOSIS REMEDY
FUMES AND HIGH HUMIDITY
Improperly installed
condensate trap
Refer to installation/operation instructions
Leak in vent piping Inspect using soap solution
Flue gas leak within
boiler
Visually inspect all mechanical connections