E20
Weishaupt
High Gas Pressure Fault
Boiler shows E20, high gas pressure switch activated (where fitted).
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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
Excessive supply pressure from gas network, Incorrect setting of high gas pressure switch, Faulty gas regulator upstream of Weishaupt gas train
How to Fix / Troubleshooting
Safety first: High gas pressure is dangerous. Isolate the boiler and gas supply and contact a professional.
- Do not reset repeatedly: If the high gas pressure switch has tripped, do not bypass or repeatedly reset it without finding the cause.
- Check supply pressure: A technician should measure the gas pressure upstream and downstream of the regulator.
- Inspect regulator: If the regulator is faulty or incorrectly set, it must be adjusted or replaced.
- Verify switch setting: Confirm that the high gas pressure switch is set according to Weishaupt commissioning data.
When to call a professional: Always involve a qualified gas engineer for high-pressure faults.
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Repair Difficulty
Professional Required
5/5
Required Part
High Gas Pressure Switch
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