F22
Aquacomfort
Gas Type / Manifold Pressure Configuration Error
F22 appears; heater may run at reduced capacity or not at all.
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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
Incorrect gas type setting (LP vs NG), Wrong orifice kit installed, Misadjusted manifold pressure
How to Fix / Troubleshooting
Safety first: Turn off gas and power. Gas configuration must comply with local codes and manufacturer specifications.
- Verify gas type: Check the rating plate on the heater to confirm whether it is configured for natural gas or propane. Ensure this matches your supply.
- Check control settings: In the service menu, confirm that the gas type parameter matches the installed orifice kit.
- Orifice kit: If the heater was converted, verify that the correct Aquacomfort conversion kit was used and installed properly.
- Professional adjustment: Manifold pressure must be set with a manometer by a licensed gas technician. Do not adjust gas regulators yourself.
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Repair Difficulty
Professional Required
5/5
Required Part
Burner Orifice Kit
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