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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.
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