BoilerFaultCodesIdeal LCA Fault Code
The Ideal LCA fault code means: your heat pump has detected an electrical overload in the motor system and has shut down to protect its internal circuits.. It appears on 1 Ideal model in our database.
Technical description: Inverter High Current
What causes the Ideal LCA fault?
This fault occurs when the internal brain of the unit detects that the compressor is trying to draw more electrical power than is safe to handle. This usually happens because there is a mechanical blockage inside the compressor or a serious electrical failure within the control board, causing the system to trip for safety. The most common reason is that the motor is under too much strain to spin properly, often due to internal wear or a faulty connection.
This fault is more common during the peak of winter or during summer heatwaves, as the compressor has to work much harder to move heat during extreme outdoor temperatures.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Ideal models that show the LCA fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ideal LCA fault code information on this page is sourced and cross-checked against the official Ideal service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026