My Vaillant ecoTEC Plus is displaying a boiler fault and error code.
Are you experiencing a fault with your boiler? If so, call our 24 hour UK call centre. 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.
Are you experiencing a fault with your ecoTEC boiler? Below you’ll find information on the fault codes for your boiler and the possible reasons for the fault you are experiencing. The ecoTEC boilers have an inbuilt advanced multifunction diagnostic display to assist with fault finding in the unlikely event of a boiler malfunction.
Status and fault codes for the Vaillant ecoTEC Plus boiler
F27 Incorrect sensing flame
F29 Flame goes off during
F32 Fan speed variation
F49 eBUS under voltage
F61 Gas-vale control defective
F62 Gas valve shut off delay
F64 Electronics/NTC fault
F65 Electronics temperature too high
F67 Flame detector input signal is outside the limits
F70 No valid DSN in display and/or main board
F71 Flow NTC reports constant valve
F72 Flow and/or return NTC fault
F75 No pressure rise was detected on turning on the pump
F76 Overheating protection on primary heat exchanger triggered
F77 Condensate pump or feedback of accessories blocks heating
F78 Wrong configuration with accessory
Con No communication to main board
Please note that this information is for guidance only and that you should seek technical advice.
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Vaillant Boiler Manuals / Instructions
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