Fault 41 Code 103 — Temperature sensor T2 faulty, short circuit

What does Fault 41 103 mean?

The Worcester Bosch Greenstar CDi Boiler displays Fault 41 with code 103, indicating a short circuit on the sensor lead for temperature sensor T2, located at the bottom of the solar cylinder.

• Short circuit in the sensor lead (T2)
• Faulty temperature sensor T2

Click steps to track your progress.

1. 1

   Visually inspect the sensor lead for T2 for any signs of damage to the insulation or exposed wires.

2. 2

   Ensure no metallic parts are shorting the sensor connections.

3. 3

   If a short is suspected or the fault persists, contact a qualified heating engineer to check and replace temperature sensor T2 if necessary.