BoilerFaultCodesIdeal LC2 Fault Code
The Ideal LC2 fault code means: your heat pump has stopped working because of an internal electrical communication fault between the main control board and the motor.. It appears on 1 Ideal model in our database.
Technical description: Inverter Error
What causes the Ideal LC2 fault?
This fault occurs when the brain of the heat pump loses the ability to talk to the motor that drives the system. The most common reason is a failure within the inverter power board, which acts like a high-speed switchboard, often caused by electrical wear or a component overheating. Because the control board can no longer manage the motor's speed or power, the system shuts down to prevent electrical damage.
This fault is often more frequent during peak summer or winter months when the inverter is under higher stress to maintain extreme temperature demands.
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 LC2 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ideal LC2 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