HEX: 15 - Combustion air fan blocked

Fault Details:

The combustion air fan is blocked.

Recommended Solution:

1. Inspect / Check for fault in fan motor – visually, ensure it is moving freely. DO not apply force.
2. Heating air intake fan wheel snagging or jammed / hood.
3. The combustion air intake fan wheel is snagging or jammed.

Note, different models and controllers might have different fault code meanings. If you're not sure, you can contact Heatso directly.