34
008082013GW
Vent system and air intake must be installed
according to the installation
There is a negative pressure on vent system (Pressure
difference). Check to see if fan motor is spinning.
The E29 is triggered immediately after fan check code 5 during the starting sequence. If during fan
check 5 the fan remains spinning more than 150 rpms an E29 will occur.
Causes:
- Wind driving into a concentric terminal. Replace with 90 degree terminal or for best results
use a roof terminal.
- Venting running a long distance in a cold attic space causing a thermo syphon after fan check.
Use room air for combustion if conforming to NFPA 111 guidelines for room air or use
concentric terminal directly through the roof.
to the boiler before removing or installing any parts