Short-cycling
Equipment switching on and off too fast usually means a wrong setpoint, a stuck sensor, or missing hysteresis. Add a dead-band and verify sensor placement.
Conflicting zones
When one zone calls for heat and another for cool, the plant oscillates. Heat-recovery VRF or a coordinated control sequence resolves it.
Sensor and wiring faults
Mislabeled or loosely terminated wires cause phantom readings. Use clear labeling, strain relief, and commissioning checks.
Protocol mismatches
BMS integration fails when baud rate, addressing, or register maps differ. Standardize on documented Modbus or BACnet profiles.
Good design prevents most of these. DNARENS thermostats and gateways ship with clear wiring labels, sensible defaults, and open protocol profiles to keep commissioning smooth.
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