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Störungen / Fehler


Kessel Typ VSL-160-B

Störungscode L25

Ursach:

U1 or U6 sensor increase its temperature too fast

LÖsung:

- If temperature difference between U1 and U8 is higher than 55°F (31°C), at maximum input, the heating water flow rate is too low. The heating water flow rate must be corrected.
- If the pump works, replace the power control board.