Burnham
Chronic System Pressure Loss
Boiler pressure drops over time and requires frequent manual filling
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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
Hidden leak in piping or radiators, Leaking boiler section, Faulty automatic air vent, Relief valve seeping
How to Fix / Troubleshooting
Safety first: Do not overfill the system. Excessive pressure can cause leaks or relief valve discharge.
- Inspect visible piping: Look for damp spots, stains, or corrosion on pipes, radiators, and around the boiler.
- Check relief valve outlet: Place a container under the relief discharge pipe to see if it drips over time.
- Examine auto vents: Automatic air vents can leak slowly. Replace any that show signs of moisture.
- Monitor gauge: Note how quickly pressure drops from normal. Rapid loss suggests a significant leak that needs professional attention.
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Repair Difficulty
Medium
3/5
Required Part
Automatic Air Vent
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