Delta Dore
Zoned Heating Imbalance or Actuator Fault
Radiator zones controlled by Delta Dore actuators do not heat evenly; some rooms are cold while others are warm.
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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
Faulty or stuck radiator actuator, Incorrect pairing of zones, Air in radiators, Misconfigured setpoints per room
How to Fix / Troubleshooting
Safety first: Radiators and pipes can be hot; use gloves and caution.
- Check setpoints: In the app or thermostat, verify that each room’s setpoint is correctly configured.
- Observe actuators: Confirm that each Delta Dore radiator actuator moves when its zone calls for heat. Replace any that do not move.
- Bleed radiators: Bleed air from cold radiators to restore proper heating.
- Reassign zones: In the app, ensure each actuator is assigned to the correct room/zone.
If imbalance persists, a heating professional should check system balancing and valve settings.
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Repair Difficulty
Medium
3/5
Required Part
Delta Dore Wireless Radiator Actuators
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