Raypak
Insufficient Heating Output
Boiler runs but does not reach set temperature; supply water is lukewarm.
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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
Gas valve not opening fully or misadjusted, Partially blocked burner orifices, Faulty modulation control, Heat exchanger fouled with soot or scale
How to Fix / Troubleshooting
Safety: Turn OFF power and gas before opening combustion compartments.
Steps:
- 1. Check setpoint: Confirm the Raypak boiler setpoint is high enough for the system requirements.
- 2. Inspect burners: Remove the burner tray and clean dust and debris from burners and orifices. Ensure all burners light evenly.
- 3. Check gas supply: A technician should verify inlet and manifold gas pressures and adjust the gas valve if necessary.
- 4. Inspect heat exchanger: Look for soot buildup on the flue side or scale on the water side. Cleaning should be performed by a professional.
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Repair Difficulty
Hard
4/5
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