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Boiler Fault Codes

How to Reset Biasi Boiler Safely: Step-by-Step Guide

If your Biasi boiler shuts down or shows an error, resetting it can often bring things back to normal. Find the reset button on the front panel – it’s usually red or marked with a crossed-out flame icon. Hold the button down for around 5 to 10 seconds, then release it. The boiler should restart and may clear the fault code once the reset finishes.

Here’s a simple, safe step-by-step guide on how to reset your Biasi boiler:

How to Reset a Biasi Boiler: Step-by-Step

Time needed: 5 minutes

Resetting your Biasi boiler can often fix minor issues. Here’s how to do it safely:

  1. Locate the Reset Button

    Look for the reset button on your boiler’s front control panel. It’s usually marked in red or shown with a flame or circular arrow symbol.

  2. Press and Hold the Reset Button

    Press and hold the reset button for 5–10 seconds until you hear a click or a soft noise—this means the boiler is attempting to restart.

  3. Watch the Display Panel

    After releasing the button, check the display screen. If successful, the boiler should clear the fault code and begin its startup cycle.

  4. Check Heating and Hot Water

    Turn on your heating and hot water taps. If everything works normally, the reset was successful.

What to Do After Resetting Your Biasi Boiler

After performing a reset, it’s important to monitor the system. Here’s what to check:

  • Display Panel – Make sure no fault codes reappear.
  • Central Heating – Ensure radiators are heating evenly.
  • Hot Water – Turn on a hot tap to confirm water is heating correctly.
  • Boiler Pressure – Check the pressure gauge. It should read 1.0–1.5 bar. If it’s too low, use the filling loop to top it up.

Common Biasi Boiler Fault Codes

Understanding boiler fault codes helps diagnose issues and decide if a reset will help. Here are a few of the most common:

Error Code 04 – Air Pressure Fault

The boiler can’t detect proper airflow. This may be caused by a blocked flue, dirty fan, or a faulty air pressure switch.

ER 02 – Temperature Probe or Safety Thermostat

The boiler isn’t reading water temperature correctly. A faulty sensor or thermostat could be the issue.

ER 06 – Gas Supply Problem

Gas isn’t reaching the boiler as it should. This might be due to a blocked gas valve or low gas pressure.

ER 15 – Water Temperature Issue

The boiler can’t heat water properly. A faulty temperature sensor or a problem in the heating circuit is likely.

When to Call a Gas Safe Registered Engineer

Resetting can solve minor problems, but if any of the following occur, stop and call a professional:

  • Boiler pressure is too high or too low and can’t be adjusted safely.
  • The boiler keeps locking out after resets.
  • There’s a smell of gas or you suspect a gas leak.
  • The reset doesn’t clear the error code.
  • There’s no hot water or heating, even after a reset.

Conclusion

Learning how to reset a Biasi boiler can save time, money, and stress when problems occur. A simple press and hold of the reset button for 5–10 seconds can fix many minor faults. But if the issue keeps coming back or fault codes persist, it’s best to call in an expert.

Frequently Asked Questions

Why won’t my Biasi boiler fire up?

Causes could include gas supply issues, faulty ignition, or problems with the flame detection electrode. Following safety protocols, check these components or seek a Gas Safe registered engineer’s help.

Where is the reset button on my Biasi boiler?

On most Biasi boilers, the reset button is clearly marked on the control panel.

Are Biasi boilers any good?

Biasi boilers features. Biasi boilers come with several features that cater to different heating needs, offering a balance of affordability, efficiency, and reliability. Most Biasi boilers come with high efficiency ratings, typically around 89% to 92%, helping homeowners save on energy bills.

How old is Biasi boiler?

Biasi is named after its Italian founder, Leopold Biasi who started the company in 1938 and then began manufacturing residential boilers in the 1940s. After all these years, they’re still very much an Italian company but opened Biasi UK in 1996 and now sell boilers to over 40 countries around the world.

How do you reset a Biasi Advance Plus?

For BIASI boilers, such as the Advanced Plus, there will be a reset button. Press and hold the reset button (usually marked with ⟲ or has a flame symbol with a line through it) for about 5 seconds until the error code clears or the display flashes. With older models, there will be a manual button on the front panel.

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