Baxi · Combi & System 2 platform
H.02.02Waiting for CN1/CN2 configuration settings
This code applies to Baxi 200 Combi 2, Baxi 400 Combi 2, Baxi 600 Combi 2, Baxi 800 Combi 2, Baxi Assure 500 Combi 2, Baxi 600 System 2, Baxi 800 System 2, Baxi Assure 500 System 2. Fault codes narrow down the likely problem, but they do not replace a model-specific diagnosis.
What you can safely check
- This is normally a status or temporary message rather than a repair instruction.
- Wait for the boiler to complete the operation and consult the user manual if it persists.
How an engineer may fix it
Confirm the operating state and investigate only if it does not clear as described in the appliance instructions.
Manufacturer source: Baxi Professional — Boiler Error Codes. Checked 15 August 2026. The appliance manual and an engineer’s on-site diagnosis take precedence. Never remove the boiler case yourself.