Vaillant Turbomax Plus 824/828E (Fault Codes)

Vaillant Turbomax Plus 824/828E

Fault Code Possible Cause Meaning
F.00 NTC Faults This means that your Flow NTC (Negative Temperature Coefficient Thermistor) cable is either defective or broken and needs to be replaced
F.01 The Flow NTC (Negative Temperature Coefficient Thermistor) cable is either defective or broken and needs to be replaced
F.10
F.11
F.13
F.20 Boiler has exceeded the maximum temperature and needs to cool down
F.22 Dry fire / Low water in system / Overheat This means that there’s either no water in your system, you have a defective pump or the pump lead is defective
F.24 Low water / Pump Failure / Blockage Pump could be obstructed, running at low capacity, could be air trapped or the pressure might be too low.
F.28 Either insufficient gas in the system, a defective electrode, ignition lead or electronic ignitor
F.29 Flame extinguished Flame or pilot light has gone out – check flue duct or gas supply.
F.60 Gas valve control defective Cable loom (connects gas valve) might have short circuited, gas valve assembly defective or electronic control system issue.
F.61 Gas valve control defective Cable loom (connects gas valve) might have short circuited, gas valve assembly defective or electronic control system issue.
F.62 Defective gas valve closure mechanism Boiler has exceeded the maximum temperature and needs to cool down
F.63 EEPROM (Electrically Erasable Programmable Read-Only Memory) error Electronic fault.
F.64 Electronic system or sensor fault Flow or back flow NTC has short circuited, or an electronic fault
F.65 Electronic system temperature too high This can happen because of an external heat source or an electrical fault
F.67 Electronic fault in the flame system

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