E9 285 — Boiler return temperature sensor measured temperature higher than 95°c

What does E9 285 mean?

The boiler return temperature sensor has measured a temperature above 95°C. This indicates potential issues with heat dissipation or sensor accuracy.

• Restricted return water flow.
• Faulty return temperature sensor.
• Pump circulation issues.
• Blockage in the system pipework.

Click steps to track your progress.

1. 1

   Turn off the boiler and allow it to cool down.

2. 2

   Check your system pressure and replenish if it is low.

3. 3

   Ensure all radiator return valves are fully open.

4. 4

   Contact a Gas Safe registered engineer to diagnose and rectify the cause of high return temperatures.