Safety: No wiring changes are needed for this adjustment.

Step 1 – Adjust cycle settings:
- In thermostat settings, locate Cycle Rate or Temperature Differential.
- Increase the differential (e.g., from 0.5°C to 1.0°C) or reduce cycles per hour.
Step 2 – Verify system type:
- Ensure the thermostat is configured for the correct system (single‑stage vs multi‑stage, heat pump vs conventional).
Step 3 – Check sensor stability:
- Monitor the displayed room temperature; if it jumps erratically, see the temperature sensor fault entry.
Step 4 – Consult HVAC pro if short cycling persists:
- Persistent short cycling may indicate an oversized system or equipment issue that requires a technician.

Thermostat cycles heating or cooling on and off very frequently (short cycling)

Possible Causes