The HVAC equipment beyond VRF lives on the same screen: fan coils, air handling units, pumps, boilers and chillers. Run status, alarms and maintenance needs in one flow.
FiotX defines HVAC maintenance cases per equipment family. A case carries the observation, probable causes, the recommended check and how recovery is verified — provided the equipment exposes the relevant signal.
| Equipment | Monitored signal | Example maintenance case |
|---|---|---|
| Fan coil units (FCU) | Run status, fan stage, filter alarm, runtime, condensate pump | Filter due; condensate pump running continuously (overflow risk) |
| Air handling units (AHU) | Filter differential pressure, fan status, drain level, supply temperature | Bag filter clogging; drain trap warning |
| Hydronic systems | Flow and return water temperatures, pump status | Low delta-T: weak coil heat transfer |
| VRF outdoor units | Protection state, compressor runtime and start count, fault codes | Protection trips increasing; zone slow to reach setpoint |
| Pumps, boilers, chillers | Run and fault contacts, analogue readings | Alarm with fault contact and run history |
Read-and-control gateway for VRF and fan coil systems; Modbus and BACnet.
Programmable remote I/O: relay outputs, dry contacts, 4–20 mA and 0–10 V, RS485/Modbus RTU.
Panel- and circuit-level energy metering, to read consumption alongside equipment operation.
Battery-powered wireless ambient sensors; temperature and humidity where cabling is hard.
Clean or replace filters; inspect the drain pan.
Alarm cleared with a maintenance record and the runtime counter reset.
Sample case text. Real cases are generated from field data and the points your brand exposes.
Where a BMS exists, data is used alongside it; dual-control conflicts are resolved at the planning stage.
The equipment's own safety and protection functions are never bypassed; the platform doesn't replace them.
Cases reach the maintenance team with context; intervention and outcome live in the same record.
Around AC and VRF, we also do all of this.
Building type, approximate area and existing system details are enough for a first conversation. Quotations are finalised after a site survey.