UK heating reference

UK Boiler Fault Codes

Find your boiler fault code, understand what it means and learn what may be causing the problem.

Manufacturer directory

Choose your boiler manufacturer to see verified ranges and fault codes.

• Alpha

  Fault-code information for Alpha boilers, grouped by verified boiler range.

  24 verified codes

• Ariston

  Fault-code information for Ariston boilers, grouped by verified boiler range.

  10 verified codes

• ATAG

  Fault-code information for ATAG boilers, grouped by verified boiler range.

  21 verified codes

• Baxi

  Fault-code information for Baxi boilers, grouped by verified boiler range.

  27 verified codes

• Biasi

  Fault-code information for Biasi boilers, grouped by verified boiler range.

  22 verified codes

• Chaffoteaux

  Fault-code information for Chaffoteaux boilers, grouped by verified boiler range.

  0 verified codes

• Ferroli

  Fault-code information for Ferroli boilers, grouped by verified boiler range.

  20 verified codes

• Glow-worm

  Fault-code information for Glow-worm boilers, grouped by verified boiler range.

  21 verified codes

• Grant

  Fault-code information for Grant boilers, grouped by verified boiler range.

  3 verified codes

• Halstead

  Fault-code information for Halstead boilers, grouped by verified boiler range.

  0 verified codes

• Heatline

  Fault-code information for Heatline boilers, grouped by verified boiler range.

  0 verified codes

• Ideal

  Fault-code information for Ideal boilers, grouped by verified boiler range.

  13 verified codes

• Intergas

  Fault-code information for Intergas boilers, grouped by verified boiler range.

  21 verified codes

• Keston

  Fault-code information for Keston boilers, grouped by verified boiler range.

  34 verified codes

• Main Heating

  Fault-code information for Main Heating boilers, grouped by verified boiler range.

  9 verified codes

• Potterton

  Fault-code information for Potterton boilers, grouped by verified boiler range.

  31 verified codes

• Ravenheat

  Fault-code information for Ravenheat boilers, grouped by verified boiler range.

  0 verified codes

• Saunier Duval

  Fault-code information for Saunier Duval boilers, grouped by verified boiler range.

  0 verified codes

• Sime

  Fault-code information for Sime boilers, grouped by verified boiler range.

  21 verified codes

• Vaillant

  Fault-code information for Vaillant boilers, grouped by verified boiler range.

  21 verified codes

• Viessmann

  Fault-code information for Viessmann boilers, grouped by verified boiler range.

  7 verified codes

• Vokèra

  Fault-code information for Vokèra boilers, grouped by verified boiler range.

  9 verified codes

• Warmflow

  Fault-code information for Warmflow boilers, grouped by verified boiler range.

  11 verified codes

• Worcester Bosch

  Fault-code information for Worcester Bosch boilers, grouped by verified boiler range.

  17 verified codes

Popular fault codes

Browse verified entries from the directory.

• 0 — Combi Compact HRE

  Sensor fault after self-check.

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• 0.0 — Combi Compact HRE

  Low pressure.

  Read fault code
• 01 — E-Tec 28 and 33

  Ignition failure; flame not detected during the ignition sequence.

  Read fault code
• 01 — Evoke 28 and 33

  Ignition failure; flame not detected during the ignition sequence.

  Read fault code
• 02 — E-Tec 28 and 33

  Overheat boiler lockout.

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• 02 — Evoke 28 and 33

  Overheat boiler lockout.

  Read fault code