BoilerFaultCodesIdeal L32 Fault Code
The Ideal L32 fault code means: your heat pump has encountered a problem with its internal power management system, meaning it cannot currently run the compressor to provide heat.. It appears on 1 Ideal model in our database.
Technical description: Inverter Error
What causes the Ideal L32 fault?
This fault occurs when the internal electronics that manage the power supply to the heat pump's compressor fail or detect an electrical irregularity. The most common reason is an overheating or malfunctioning inverter board, which prevents the system from being able to safely ramp up the motor to generate heat.
This issue can become more frequent during summer heatwaves or periods of extreme cold when the inverter is under high electrical load to maintain performance.
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 L32 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ideal L32 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