BoilerFaultCodesYour boiler has lost its connection to the external temperature controller or room thermostat, meaning it cannot receive instructions on when to turn the heating on.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Break in communication with the TR 2
What causes this fault?
This fault occurs when the boiler and your home's temperature controller stop talking to each other due to a break in the electrical signal. The most common reasons are a loose connection in the internal wiring, a failed wireless receiver, or the wall-mounted thermostat losing its pairing with the boiler.
DIY fix possible
Check if your room thermostat or programmer has run out of batteries and replace them if necessary.Ensure the thermostat is within range of the boiler and that the wireless receiver is plugged in correctly.Try resetting the boiler by pressing the reset button for five seconds to restart the communication link.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like A8 — no call-out fees, no surprises.
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Worcester Bosch R30 35 And 40 HE Plus is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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