De Dietrich
Short Cycling
Furnace frequently cycles on and off with short run times, causing wear and noise
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Oversized De Dietrich boiler for installation, Minimum power too high in parameters, Low water volume in system, Room thermostat with too narrow differential
How to Fix / Troubleshooting
Safety: Parameter changes should be done by qualified persons.
Steps:
- Check thermostat location: Ensure the room thermostat is not near a heat source or in a draught, which can cause rapid cycling.
- Increase differential: If your thermostat allows, increase the temperature differential (hysteresis) to reduce cycling.
- Open more emitters: Ensure enough radiators or underfloor loops are open to provide adequate load.
Professional help: A technician can adjust minimum power, add a buffer tank, or reconfigure the system to reduce cycling.
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Repair Difficulty
Medium
3/5
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