How much does it cost to fix Ideal error code 9.1.30?

Typical repair cost for the Ideal 9.1.30 fault is £80-140 including labour.

9.1.30 High

Ideal 9.1.30 Fault Code

Q: What does the Ideal 9.1.30 fault code mean?

Your boiler has stopped working because its internal pressure sensors have been plugged into the wrong sockets during a service or repair.

Also written as 9130 — same fault.

The Ideal 9.1.30 fault code means: your boiler has stopped working because its internal pressure sensors have been plugged into the wrong sockets during a service or repair.. It appears on 1 Ideal model in our database.

Technical description: High Pressure Sensor and Low Pressure Sensor Wiring-Cross-Connection

What causes the Ideal 9.1.30 fault?

This fault occurs when the electrical wires for the boiler's internal high and low pressure sensors have been swapped or plugged into the wrong ports on the control board. It typically happens during a recent repair or service where the technician accidentally switched these identical-looking connections, leading the boiler to receive incorrect safety information. Because the system can no longer accurately monitor water pressure, it shuts down immediately as a safety precaution.

Typical repair cost £80-140 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Ideal models that show the 9.1.30 fault code

Click a model for the full fault code list and model-specific repair notes.

HP290 Repair: £80-140

Source

Ideal 9.1.30 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