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Boiler fault and error codes for the Alpha CD50S and CD70S boilers

Do you have a faulty Alpha CD50S or CD70S boiler? MR Boiler Repairs are the UK’s leading boiler repair and service specialist, providing support for domestic, commercial and residential properties. Our low cost fixed price repair service will provide you with peace of mind and avoid any scary repair bills.

If you are experiencing a problem of no heating or hot water then view the boiler fault codes for your Alpha CD boiler to identify the problem.

Boiler Fault Codes for the CD50S and CD70S

    • 00  Flame sensor fault detected
    • 02  Ignition failure
    • 03  Gas valve supply error
    • 05  Internal fault (electronics)
    • 06  as above
    • 11 as above
    • 13  as above
    • 14  as above
    • 15  as above
    • 16  as above
    • 17  as above
    • 44  as above
    • 60  as above
    • 04  Burner lock out
    • 07  Gas valve relay fault
    • 12  Overheat safety thermostat operated
    • 18  Primary flow temperature operated
    • 19  Primary return temperature too high
    • 24  Return temp higher than flow temp
    • 25  Rapid primary flow temperature
    • 26  Insufficient water pressure
    • 28  Fan fault
    • 29  Fan fault
    • 30  Temp difference between system flow and return too high
    • 31  Primary flow temperature sensor fault
    • 32  Primary return temperature sensor fault
    • 33  Domestic flow sensor fault
    • 36  System flow sensor fault
    • 37  System return sensor fault
    • 38  Domestic circuit sensor
    • 65  Fan fault (insufficient air)
    • 114  Invalid cascade signal
    • 118  Loss of ionization current during ignition of burner
  • FUSE  24V fuse blown

Reading through the boiler manual for more information on the CD50S and CD70S boilers for more trouble shooting advice or book a boiler repair today.

 

 

 

 

 

 

 

 

 

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