Viadrus
Faulty Automatic Air Vent
Boiler’s automatic air vent constantly releases water or air, causing noise and pressure fluctuations.
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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
Stuck float in Viadrus automatic air vent, Debris preventing proper sealing, Excessive air in system due to frequent draining or leaks
How to Fix / Troubleshooting
Safety first: The air vent is usually located at a high point and may be hot. Allow cooling before handling.
Step-by-step checks:
- 1. Check vent cap position: The cap should be slightly open to allow air out but not fully removed. If water leaks, try tightening the cap slightly.
- 2. Replace vent: If the vent continues to leak, isolate the boiler, reduce pressure, and unscrew the vent. Wrap the new vent threads with PTFE tape and install. Refill and bleed the system.
- 3. Address air ingress: Frequent air accumulation suggests leaks or frequent draining. Fix underlying issues to prevent recurrence.
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Repair Difficulty
Medium
3/5
Required Part
Automatic Air Vent
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