BoilerFaultCodesIdeal LC8 Fault Code
The Ideal LC8 fault code means: your heat pump has stopped working because its internal power management system has detected an electrical fault.. It appears on 1 Ideal model in our database.
Technical description: Inverter Error
What causes the Ideal LC8 fault?
This fault occurs when the heat pump's internal brain, which controls the speed of the motor, detects an electrical irregularity or a component failure. The most common reason is that the inverter board has suffered a breakdown or the compressor is drawing too much power, causing the system to ship down for safety.
This fault is more common during peak winter months when the heat pump is working at its highest capacity and the electrical components are under the most stress.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Ideal models that show the LC8 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ideal LC8 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