What the manual says
Manufacturer manualOverheat - Normally associated with either poor or lack of primary water circulation. Wait for appliance to cool then reset as described for code 01.
From this model's manual
Verified against the Vokera/Vokera Linea 24 Combi installation & service manual.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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All 6 fault codes on the Linea 28
Seeing a different code? Every code this model can display, in one place.