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5.6 Alarms to the remote control room
Should any of the following issues occur, general alarm signals are sent from the HRV potential free relay to the remote
control room. Issues that can trigger an alarm: Inlet air too hot or cold, danger of freezing water battery, overheating
protectors or if the unit is stopped.
5.7. Maintenance interval reminder
When the maintenance interval is complete, the respective information is displayed on the operating panel and the
indication light blinks green. The user can reset the reminder after the filters have been changed. The maintenance
interval counter is reset and the new alert will be transmitted after the period has been completed again. The maintenance
interval can be set between 3 - 12 months.
5.8. Filter-dirty notice
Differential pressure switch can be installed to the equipment that measures dirtiness of the inlet air filter by monitoring its
differential pressure. When the switch runs, the display transmits the necessity of filter-change and the indication light
blinks yellow. Differential pressure switch is taken into use through the maintenance menu and it deactivates maintenance
interval reminder
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