1. Inspect and clean the inside of the unit from foreign objects such as rags, tools, particles of metal, and such, that may pose damage to the inside of the unit.
2. If any, ensure that both air balance dampers are open and check that the air paths of the duct work are not obstructed in any way.
3.
4.
5. If applicable, check that the rating of the electrical supply fuses is correct, see wiring diagram.
5.3 START
1. Switch MAN/AUTO
to "MAN" (AUTO-mode can only be used if a humidistat is connected).