What does the Worcester Bosch 52124 fault code mean?

Your boiler's internal temperature sensors have likely been plugged into the wrong sockets or have developed a wiring fault, meaning the system cannot accurately track how hot the water is.

How much does it cost to fix Worcester Bosch error code 52124?

Typical repair cost for the Worcester Bosch 52124 fault is £90-180 including labour.

Worcester Bosch 52124 Fault Code: What It Means & How to Fix It

Technical description

Temperature sensors (T1 and T2) reversed.

What causes this fault?

This fault occurs when the boiler's control board detects that the temperature readings from the flow and return pipes are swapped or illogical. The most common reason is that the internal sensors were plugged into the wrong ports during a recent repair, or a fault in the wiring harness is sending confusing signals to the main computer.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

EAView →E9View →D1View →

Your boiler's internal temperature sensors have likely been plugged into the wrong sockets or have developed a wiring fault, meaning the system cannot accurately track how hot the water is.

Technical description

What causes this fault?

Engineer required

Related fault codes

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