Panasonic
Insufficient Heating Capacity
Water heater output is lukewarm only; cannot reach set temperature even at maximum setting.
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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 supply pressure too low, Partially blocked burner, Scale buildup in heat exchanger, Incorrect gas type or orifice
How to Fix / Troubleshooting
Safety: Gas pressure and combustion adjustments must be done by qualified technicians.
- 1. Check set temperature: Ensure the controller is set to the desired temperature (e.g., 50°C) and not limited by a child lock or eco mode.
- 2. Verify flow rate:
- If multiple taps are open, the heater may not be sized for the total demand.
- Close some taps and see if temperature improves.
- 3. Clean inlet filter and aerators: Restore proper flow and pressure.
- 4. Descale heat exchanger: Perform descaling to improve heat transfer.
- 5. If still lukewarm: Have a technician check gas pressure, burner condition, and confirm correct gas type/orifice for the installation.
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Repair Difficulty
Medium
3/5
Required Part
Burner and Heat Exchanger
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