Worcester Bosch Fault Code D1 – Causes & Fixes in Bearsden, Milngavie & Surrounding Areas

Worcester Bosch Fault Code D1 – Causes & Fixes in Bearsden, Milngavie & Surrounding Areas

The D1 fault code on a Worcester Bosch boiler means there’s a problem with the flow temperature sensor, which can cause your boiler to shut down. If your heating or hot water has stopped working, you need a fast, reliable fix. If you're in Bearsden, Milngavie, Anniesland, Clydebank, or surrounding areas, we can get your boiler running again—same day!

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What Causes the D1 Fault Code?

🔹 Faulty Flow Temperature Sensor – A damaged or dirty sensor may stop sending the right signals to the boiler.

🔹 Loose or Damaged Wiring – If the sensor’s wiring is faulty, the boiler can’t read the temperature correctly.

🔹 Overheating Issues – If the system is getting too hot, the sensor may shut the boiler down for safety.

🔹 Blocked System – Sludge or trapped air in the pipes can interfere with water flow and temperature regulation.

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How to Fix the D1 Fault Code

✅ Reset the Boiler – Hold the reset button for 5 seconds and restart the system.

✅ Check for Loose Wiring – If safe to do so, inspect the sensor connections for any visible damage.

✅ Bleed Radiators – Removing trapped air can restore proper water circulation and prevent overheating.

✅ Still Not Working? – A Gas Safe engineer may need to replace the sensor, flush the system, or fix overheating issues.

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Need an Emergency Boiler Repair in Bearsden, Milngavie, or Clydebank?

🚨 Don’t let a faulty boiler leave you in the cold! We offer same-day emergency repairs across Bearsden, Milngavie, Anniesland, Clydebank, Scotstoun, and surrounding areas.

📞 Call us now on 07968 047 977 for fast, expert Worcester Bosch boiler repairs!

🔧 Local, Reliable & Gas Safe Registered – We’ll Get Your Heating Back On Today!