Vaillant fault codes, explained.
Find your code below — each guide covers what it means, likely causes, safe checks, and when to call a Gas Safe engineer.
Vaillant code library (48)
CONNECTION Vaillant Fault Code CONNECTION: Causes & Solutions F00 F0 Vaillant Fault Code F.00 / F.0: Causes & Solutions F00 04 05 10 14 15 Vaillant Fault Code F.00, .04, .05, .10, .14, .15: Causes & Solutions F00 Vaillant Fault Code F.00: Causes & Solutions F01 F1 Vaillant Fault Code F.01 / F.1: Causes & Solutions F01 Vaillant Fault Code F.01: Causes & Solutions F1 Vaillant Fault Code F.1: Causes & Solutions F4 Vaillant Fault Code F.4: Causes & Solutions F5 Vaillant Fault Code F.5: Causes & Solutions F6 Vaillant Fault Code F.6: Causes & Solutions F10 Vaillant Fault Code F.10: Causes & Solutions F11 Vaillant Fault Code F.11: Causes & Solutions F12 Vaillant Fault Code F.12: Causes & Solutions F13 Vaillant Fault Code F.13: Causes & Solutions F17 Vaillant Fault Code F.17: Causes & Solutions F20 Vaillant Fault Code F.20: Causes & Solutions F21 Vaillant Fault Code F.21: Causes & Solutions F22 Vaillant Fault Code F.22: Causes & Solutions F23 Vaillant Fault Code F.23: Causes & Solutions F24 Vaillant Fault Code F.24: Causes & Solutions F25 Vaillant Fault Code F.25: Causes & Solutions F26 Vaillant Fault Code F.26: Causes & Solutions F27 Vaillant Fault Code F.27: Causes & Solutions F28 Vaillant Fault Code F.28: Causes & Solutions F29 Vaillant Fault Code F.29: Causes & Solutions F32 Vaillant Fault Code F.32: Causes & Solutions F49 Vaillant Fault Code F.49: Causes & Solutions F60 Vaillant Fault Code F.60: Causes & Solutions F61 Vaillant Fault Code F.61: Causes & Solutions F62 Vaillant Fault Code F.62: Causes & Solutions F63 Vaillant Fault Code F.63: Causes & Solutions F64 Vaillant Fault Code F.64: Causes & Solutions F65 Vaillant Fault Code F.65: Causes & Solutions F67 Vaillant Fault Code F.67: Causes & Solutions F68 Vaillant Fault Code F.68: Causes & Solutions F70 Vaillant Fault Code F.70: Causes & Solutions F71 Vaillant Fault Code F.71: Causes & Solutions F72 Vaillant Fault Code F.72: Causes & Solutions F73 Vaillant Fault Code F.73: Causes & Solutions F74 Vaillant Fault Code F.74: Causes & Solutions F75 Vaillant Fault Code F.75: Causes & Solutions F76 Vaillant Fault Code F.76: Causes & Solutions F77 Vaillant Fault Code F.77: Causes & Solutions F78 Vaillant Fault Code F.78: Causes & Solutions F83 Vaillant Fault Code F.83: Causes & Solutions F84 Vaillant Fault Code F.84: Causes & Solutions F85 Vaillant Fault Code F.85: Causes & Solutions S3 Vaillant Fault Code S.3: Causes & Solutions
Rather just get it fixed?
Same-day repairs across East Kent from Gas Safe engineers (№ 2836) who know Vaillant boilers well.
Call 01304 381999