BoilerFaultCodesBiasi Er 07 Fault Code
Also written as ER07 — same fault.
The Biasi Er 07 fault code means: your boiler is struggling to accurately measure the temperature of the hot water it provides, which has caused it to stop heating your water to prevent overheating.. It appears on 17 Biasi models in our database.
Technical description: Faulty d.h.w. temp. probe NTC
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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A cover plan would handle faults like Er 07: no call-out fees, no surprise bills.
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Biasi models that show the Er 07 fault code
Click a model for the full fault code list and model-specific repair notes.
- Advance 25C Repair: £90-250
- Advance 25S Repair: £90-250
- Advance 25S Repair: £120-180
- Advance 30C Repair: £90-250
- Advance 30C Repair: £120-180
- Advance 30S Repair: £90-250
- Advance 30S Repair: £120-180
- Advance 35C Repair: £90-250
- Advance 35C Repair: £120-180
- Advance Plus Repair: £120-180
- Advance Plus Repair: £120-180
- Advance Plus 25C Repair: £90-250
- Advance Plus 30C Repair: £90-250
- Advance Plus 30S ErP Repair: £90-250
- Advance Plus 30S ErP Repair: £120-180
- Advance Plus 30S ErP Repair: £120-180
- Advance Plus 35C Repair: £90-250
Source
Biasi Er 07 fault code information on this page is sourced and cross-checked against the official Biasi service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 31 August 2026