BoilerFaultCodesIdeal LC7 Fault Code
The Ideal LC7 fault code means: your heat pump has encountered a communication or power issue within its internal electrical control system, meaning it cannot currently heat your home.. It appears on 1 Ideal model in our database.
Technical description: Inverter Error
What causes the Ideal LC7 fault?
This fault occurs when the brain of the heat pump loses touch with the power unit that drives the compressor. The most common reason is a failure in the electrical circuits or loose wiring connections, preventing the system from drawing the power it needs to generate heat. Essentially, the internal components can no longer talk to each other to coordinate the heating process.
This fault may appear more frequently during peak winter months when the inverter is under high load to maintain home temperatures in freezing conditions.
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 LC7 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ideal LC7 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