Buderus fault code B2E207
Fault code B2E207 on a Buderus boiler (including Logamax plus GB402-320 G20 and Logamax plus GB402-320 G25) means: 1: The water pressure is < 0.6 bar. 2: Boiler or pump incorrectly connected hydraulically. 3: Difference between flow and return temperature too large. 4: Problems in the hydraulics. Reset the appliance once. If the code comes back, a part is usually faulty.
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 B2E207 on a Buderus boiler indicates: 1: The water pressure is < 0.6 bar. 2: Boiler or pump incorrectly connected hydraulically. 3: Difference between flow and return temperature too large. 4: Problems in the hydraulics.
Fixing fault code B2E207: step by step
- Read the water pressure on the display or gauge. With the system cold it should be between 1.5 and 2 bar.
- If it is lower, top up to 1.5–2 bar with the filling valve or filling loop, then close the valve again.
- Bleed the radiators with a radiator key, then check the pressure again and top up if needed.
- Reset the appliance once. If the code comes straight back, do not keep resetting it.
- Does the pressure drop again within a few days, or does the code come back? Then there is a leak somewhere (radiator, pipe, pressure relief valve or expansion vessel) or the pressure or flow sensor is faulty.
Applies to
Buderus Logamax plus GB402-320 G20, Logamax plus GB402-320 G25, Logamax plus GB402-395 G20, Logamax plus GB402-395 G25, Logamax plus GB402-470 G20, Logamax plus GB402-470 G25, Logamax plus GB402-545 G20, Logamax plus GB402-545 G25, -.
Matching parts
Buderus parts are available from Instalpunt; shipping to EU countries from €12.95 (€16.95 for more distant countries), usually 3–5 working days.
This message does not point directly to one faulty part. If the code keeps coming back, view the Buderus parts:
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 Buderus boiler fault code B2E207 mean?
1: The water pressure is < 0.6 bar. 2: Boiler or pump incorrectly connected hydraulically. 3: Difference between flow and return temperature too large. 4: Problems in the hydraulics.
How do I fix fault code B2E207 on a Buderus 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 Buderus fault code B2E207?
That depends on the exact cause. In the Buderus parts overview at Instalpunt you will find the current price and stock for each part.
Can I fix fault code B2E207 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 Buderus boiler faults and codes at a glance →