Common problems guide

The most common Ideal Logic Air problems

The faults most likely to send a Ideal Logic Air into lockout — with plain-English causes, what to check first, estimated repair costs and whether you need a Gas Safe engineer.

128 documented codes
6 most common
1 DIY-safe checks
5 engineer needed

The 6 most common faults

01
Troubleshooting 22 High DIY-safe

Your boiler has detected that the water pressure inside your heating system is too low to operate safely and effectively.

What to try first

Locate the external filling loop, which is usually a flexible silver braided hose connecting two pipes under the boiler.Open the valves at both ends of the hose to allow mains water into the system until the gauge on the boiler front reads between 1.0 and 1.5 bar.Close both valves firmly and ensure the hose is disconnected if required by your specific model setup.

Est. cost
£80-150
Parts
Pressure relief valve, Pressure sensor, Expansion vessel
Full guide for Troubleshooting 22
02
23 High Engineer

Your boiler is experiencing a communication problem where the internal parts are failing to send signals to each other properly, resulting in a system shutdown.

Est. cost
£150-300
Parts
Main printed circuit board (PCB), Wiring harness, Display interface module
Full guide for 23
03
32 High Engineer

Your heat pump’s main control brain is unable to correctly communicate with the outdoor unit, preventing the system from operating properly.

Est. cost
£250-500
Parts
Outdoor unit PCB, Communication cable, Main control board
Full guide for 32
04
62 High Engineer

Your boiler's indoor unit is struggling to talk to the heat pump unit outside, causing the system to stop heating your home as a precaution.

Est. cost
£150-400
Parts
Communication cable, Outdoor PCB
Full guide for 62
05
71 High Engineer

Your boiler is struggling to accurately measure how hot the water is as it leaves the system, so it has stopped working for safety reasons.

Est. cost
£150-250
Parts
Outlet temperature sensor, Wiring harness
Full guide for 71
06
72 High Engineer

Your heat pump is unable to read the temperature of its internal cooling system, preventing it from operating safely.

Est. cost
£180-350
Parts
Compressor temperature sensor, Wiring loom
Full guide for 72
Parts most often replaced

on the Ideal Logic Air

Pressure relief valvePressure sensorExpansion vesselMain printed circuit board (PCB)Wiring harnessDisplay interface module

Based on parts cited in our fault code database. Your engineer will confirm what's actually needed after diagnosis.

Call a Gas Safe engineer if…

  • You can smell gas or see signs of a leak
  • The Ideal shows an Emergency or High severity code
  • The boiler keeps locking out after repeated resets
  • You've tried the DIY checks and the fault hasn't cleared
  • There's visible water leaking from the boiler
  • The flame is yellow or orange instead of blue
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See the full 128-code list for the Ideal Logic Air

Related guides

Boiler losing pressure → No hot water → When to replace → Symptom checker →