High Lockout
E2 on Ideal HP290

Your indoor control panel has lost communication with the outdoor unit, meaning your heat pump cannot receive instructions to provide heating or hot water.

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

No connection Outdoor PCB to User Interface

What causes this fault?

This fault occurs when the digital bridge between your indoor controls and the outdoor unit is broken, preventing them from talking to each other. The most common reasons are a loose or damaged connection cable, a blown fuse, or a technical failure within one of the main circuit boards.

This fault can occasionally occur after heavy storms or high winds if debris or moisture has compromised the external wiring connections.

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

E1View →E3View →E0View →

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