How much does it cost to fix Ideal error code NO CONNECTION TO PRIMARY PCB?

Typical repair cost for the Ideal NO CONNECTION TO PRIMARY PCB fault is £150-300 including labour.

NO CONNECTION TO PRIMARY PCB High

Ideal NO CONNECTION TO PRIMARY PCB Fault Code

Q: What does the Ideal NO CONNECTION TO PRIMARY PCB fault code mean?

Your boiler's internal computer is failing to communicate with the main control board, which has caused the system to stop operating until the connection is restored.

Also written as NOCONNECTIONTOPRIMARYPCB — same fault.

The Ideal NO CONNECTION TO PRIMARY PCB fault code means: your boiler's internal computer is failing to communicate with the main control board, which has caused the system to stop operating until the connection is restored.. It appears on 3 Ideal models in our database.

Technical description: No connection to primary PCB

Typical repair cost £150-300 (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 NO CONNECTION TO PRIMARY PCB fault code

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

Source

Ideal NO CONNECTION TO PRIMARY PCB 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 7 July 2026