High Lockout
Other Codes on Remeha Quinta 115

The main computer brain of your boiler has developed a serious internal fault and is no longer able to control the heating process safely.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Control box failure

What causes this fault?

This fault occurs when the internal electronic components or circuits on the main command board suffer a physical failure or electrical breakdown. The most common reason is long-term exposure to heat and vibration, which causes the soldered joints to crack or the capacitors to reach the end of their working life.

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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