Low Warning
54:2 on Viessmann Vitodens 300-W

Your boiler is having trouble communicating with your solar heating control system, meaning your solar panels may not be providing hot water as intended.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description

With Vitosolic 200 (automatical adjustment on recognition)

What causes this fault?

This fault occurs when the boiler's main control unit tries to automatically detect and link up with your solar thermal heating system but fails to receive a response. The most common reasons are a loose connection in the communication wiring, a blown fuse in the solar module, or a malfunction within the Vitosolic control box itself.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Find a Gas Safe engineer
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Related fault codes

54:1View →BCView →

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