- Vaillant Boiler Fault Codes
Listed below are Vaillant boiler fault codes and Vaillant boiler Manuals.
|
Fault Code
|
Possible Cause
|
Meaning
|
|---|---|---|
| F.00 N | NTC FAULTS | This means that your Flow NTC (Negative Temperature Coe fficient Thermostat) cable is either defective or broken and needs to be replaced |
| F.01 | NTC FAULTS (feed temperature sensor) – faulty connection and open circuit. | This means that your Flow NTC (Negative Temperature Coe cient Thermostat) cable is either defective or broken and needs to be replaced |
| F.10 | NTC FAULTS (feed temperature sensor) – short circuit | — |
| F.13 | NTC FAULTS (feed temperature sensor) – short circuit | — |
| F.20 | NTC FAULTS (feed temperature sensor) | Your boiler has exceeded the maximum temperature and needs to be allowed to cool down |
| F.22 | DRY FIRE, LOW WATER IN SYSTEM/OVERHEAT | This means either there is no water in your system, you have a defective pump or the pump lead is defective |
| F.24 | LOW WATER, OR PUMP FAILURE/BLOCKAGE | Your pump could be obstructed, running at low capacity, or there could be air trapped in your appliance. Additionally, the pressure in your system may be too low. |
| F.28 | NO IGNITION/IGNITION PROBLEM | This means there is either insu cient gas in the system, a defective electrode, ignition lead or electronic ignitor |
| F.29 | FLAME EXTINGUISHED. FAN/FLUE PROBLEM/GAS | Your flame, or pilot light has gone out. Check your ue duct or gas supply to see if there is a problem there. |
| F.60 | GAS VALVE CONTROL – DEFECTIVE | Your cable loom which connects to your gas valve may have short circuited. Alternatively, you could have a defective gas valve assembly or electronic control system. |
| F.61 | GAS VALVE CONTROL – DEFECTIVE | Your cable loom which connects to your gas valve may have short circuited. Alternatively, you could have a defective gas valve assembly or electronic control system. |
| F.62 | DEFECTIVE GAS VALVE CLOSURE MECHANISM | Your boiler has exceeded the maximum temperature and needs to be allowed to cool down |
| F.63 | EEPROM ERROR | This is an electronic fault within your system. EEPROM stands for Electrically Erasable Programmable Read-Only Memory |
| F.64 | ELECTRONIC SYSTEM/SENSOR FAULT | Your ow or back ow NTC has su ered a short circuit, 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 FLAME SYSTEM | — |
- To get your Vaillant Boiler Repaired, call us today on Cardiff 02920 140240
|
Fault Code
|
Cause of Problem
|
|---|---|
| F.1 | Lack of gas, a fault with the ignition or fl ue, or you may need to adjust the gas valve or replace a defective electrode lead |
| F.4 | Ignition fault. |
| F.5 | The system has su ered a fault due to overheating. |
| F.6 | Your flow NTC has developed a fault. |
| F.17 | Check the polarity of your system |
| F.24 | Pump-related faults – the pump could have failed, it may have over run or there could be an issue with the air lock |
- To get your Vaillant Boiler Repaired, call us today on Cardiff 02920 140240
|
Fault Code
|
Cause of Problem
|
|---|---|
| F.00, .04, .05, .10, .14, .15 | All of these are NTC faults, and are best resolved by rst changing all NTCs to make diagnosis earlier. |
| F.21 | The pilot ame has failed. |
| F.22 | There is insu cient water in your system |
| F.11 | A blockage in the appliance is preventing the system from fl owing as it should |
| F.12 | A blockage in the appliance is aff ecting the system’s pressure |
| F.13 | The appliance is blocked because of a water deficiency |
- To get your Vaillant Boiler Repaired, call us today on Cardiff 02920 140240
- Call for a Boiler repair today on Cardiff 02920 140240
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