Vaillant ecoTEC plus VUI Series User Manual

0020308121_04 Installation and maintenance instructions 3
13.4 Limp home mode messages ............................... 51
13.5 Resetting parameters to factory settings ............. 51
13.6 Eliminating faults in the product........................... 51
13.7 Replacing defective components......................... 52
14 Decommissioning.............................................. 61
14.1 Activate the standby mode .................................. 61
14.2 Temporarily decommissioning............................. 61
14.3 Permanently decommissioning............................ 61
15 Disposing of the packaging.............................. 61
Appendix ............................................................................ 62
A Tightening torques ............................................ 62
B Inspection and maintenance work................... 62
C Installer level ...................................................... 64
D Diagnostics codes............................................. 65
E Status codes ...................................................... 72
F Fault codes......................................................... 73
G Check programmes ........................................... 84
H Actuator test....................................................... 84
I Maintenance codes............................................ 85
J Reversible limp home mode codes ................. 85
K Irreversible limp home mode codes ................ 85
L Wiring diagram................................................... 88
M Commissioning Checklist................................. 91
N Commissioning Flow Chart .............................. 95
Index ................................................................................... 96

Vaillant ecoTEC plus VUI Series Specifications

General

Brand	Vaillant
Model	ecoTEC plus VUI Series
Category	Boiler
Language	English