BoilerFaultCodesWhat the manual says
Manufacturer manualDHW sensor open circuit. Check cable/connections not damaged. Renew DHW cable/sensor assy. Part No. 5106290
What causes this fault?
This fault occurs when the boiler's internal computer loses communication with the sensor responsible for measuring your tap water temperature. This is typically caused by the sensor's internal components failing due to age or the electrical wiring becoming brittle and snapping over time. Because the boiler no longer knows how hot the water is, it shuts down the hot water system as a safety precaution.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Avoid the next call-out bill
A cover plan would handle faults like E07: no call-out fees, no surprise bills.
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