Furnace frequently cycles on and off, radiators get hot quickly then cool, short cycling

Safety: Adjust only user-accessible settings unless you are a trained technician.

Steps:

• 1. Lower flow temperature: Reduce the heating flow temperature on the Immergas panel to lengthen burner run times.
• 2. Check thermostat location: Ensure the thermostat is not in a small or very warm room; relocate if necessary.
• 3. Open more radiators: Avoid closing too many radiators, which reduces system volume and causes rapid temperature rise.
• 4. Technician solutions: Adjust minimum power, install a buffer tank or hydraulic separator if needed, and verify correct bypass valve setting.