1075
Heat exchanger temp sensor short circuit
Worcester Bosch Greenstar 4000 (before May 2021)
Remedy
▶ Check the flow temperature sensor plug is connected.
▶ Check the resistance of the flow temperature sensor and replace if required.
▶ Check the continuity of harness and replace if required.
▶ Replace the flow temperature sensor.
▶ Replace the PCB.
This code also applies to: