Benraad fault code bL81
Fault code bL81 on a Benraad boiler (including BR 18 and BR 18T) means: Lockout 81: flue gas sensor interrupted after having been connected to the control. Reset the appliance once. If the code comes back, a part is usually faulty, often a temperature sensor. You can check the water pressure and settings yourself; leave work on gas-carrying parts to a certified gas engineer.
After a safety alert (gas, flue gas, combustion), reset no more than once and call in a certified gas engineer. If you smell gas, call your national gas emergency number or 112 immediately.
Cause
Fault code bL81 on a Benraad boiler indicates: Lockout 81: flue gas sensor interrupted after having been connected to the control.
Applies to
Benraad BR 18, BR 18T, BR 24-32C, BR24C, BR24Ci, BR27, BR27T, BR35Ci, -.
Click a model for the parts list and exploded view of that appliance.
Matching parts
Benraad parts are available from Instalpunt; shipping to EU countries from €12.95 (€16.95 for more distant countries), usually 3–5 working days.
Based on the cause, these original Benraad parts fit (always check the type number of your appliance):
- Atag O-ring 5 x 2 mm flow sensor/flow/return 5 pcs € 23.52
- Atag water trap pressure sensor € 32.67
- Atag T-piece NTC3 € 32.67
Further reading on this cause
Other Benraad codes with the same cause
- bL11 — Lockout 11: maximum DT of flow and return sensor on heating repeatedly exceeded
- bL12 — Lockout 12: maximum DT of flow and return sensor on DHW repeatedly exceeded
- bL67 — Lockout 67: a DT has been detected between flow and return sensor while the burner is not…
- bL80 — Lockout 80: maximum flue gas temperature exceeded (if flue gas sensor present)
- bL82 — Lockout 82: flue gas sensor short-circuited, heat demand blocked and pump capacity at…
Fix it yourself or call an engineer?
Always consult the manual for your appliance and work safely. If in doubt or if the fault comes back, call in a qualified professional. A question about a part? Write to us at info@instalpunt.nl.
Frequently asked questions
What does Benraad boiler fault code bL81 mean?
Lockout 81: flue gas sensor interrupted after having been connected to the control.
How do I fix fault code bL81 on a Benraad boiler?
First check the cause described above. Then restart the appliance using the reset button. If the message comes back, a part usually needs replacing or the fault needs to be repaired by a qualified professional.
Which parts do I need for Benraad fault code bL81?
That depends on the exact cause. In the Benraad parts overview at Instalpunt you will find the current price and stock for each part.
Can I fix fault code bL81 myself?
You can reset the appliance and check things like the water pressure or settings yourself. Work on gas-carrying parts must be left to a certified gas engineer.
All Benraad boiler faults and codes at a glance →