1Model
3Problem
4Reason
- 1Stop in the exhaust filterOpen the service hatch when the unit is not on. Remove the filters and check if they are dirty.
- 2Stop in the supply air filterOpen the service hatch when the unit is not on. Remove the filters and check if they are dirty.
- 3Stop in the out side air grilleCheck if there is a stoppage in the outside air grille.
- 4The fan blades are dirtyOpen the service hatch when the unit is on. Check if the fan blades are dirty.
- 5Error in the fan bearingsOpen the service hatch when the unit is on and listen if the noise is coming from the fans.
- 6Error in the heat exchanger motor/gearboxOpen the service hatch while the unit is on and listen if the noise is coming from the heat exchanger.
5Solution