Vaillant ecoTEC plus SERIES - Safety Information; Action-Related Warnings; Intended Use Guidelines; General Safety Precautions

3Installation and maintenance manual ecoTEC
Contents
6.1.4 Final rinsing of the heating system (“hot”). . . 38
6.2 Handing over to the user . . . . . . . . . . . . . . . . . . 38
7 Inspection and maintenance . . . . . . . . . . . . 38
7.1 Initial inspection. . . . . . . . . . . . . . . . . . . . . . . . . . 38
7.1.2 Safety instructions. . . . . . . . . . . . . . . . . . . . . . . . 39
7.1.3 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
7.1.4 Overview of the maintenance tasks . . . . . . . . . 40
7.1.5 Functional check of boiler operation . . . . . . . . 40
7.2 Servicing the compact thermal module. . . . . . 40
7.2.1 Dismantling the compact thermal module . . . 40
7.2.2 Cleaning the integral condensation heat
exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
7.2.3 Checking the burner . . . . . . . . . . . . . . . . . . . . . . 42
7.2.4 Installing the compact thermal module. . . . . . 42
7.3 Cleaning the condensation water siphon . . . . 43
7.4 Checking the expansion vessel . . . . . . . . . . . . . 43
7.5 Recommissioning the boiler. . . . . . . . . . . . . . . . 44
7.6 Test operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
8 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . 44
8.1 Logical fault finding procedure . . . . . . . . . . . . . 44
8.1.1 Status codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
8.1.2 Diagnosis codes . . . . . . . . . . . . . . . . . . . . . . . . . . 45
8.1.3 Error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
8.1.4 Error memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
8.4 Test programs. . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
8.5 Resetting parameter to factory settings . . . . . 49
9 Replacing components . . . . . . . . . . . . . . . . . 49
9.1 Safety instructions. . . . . . . . . . . . . . . . . . . . . . . . 49
9.2 Replacing burner . . . . . . . . . . . . . . . . . . . . . . . . . 49
9.3 Replacing fan or gas fittings . . . . . . . . . . . . . . . 50
9.4 Replacing expansion tank. . . . . . . . . . . . . . . . . . 50
9.5 Replacing primary heat exchanger. . . . . . . . . . 51
9.6 Replacing electronics and display. . . . . . . . . . . 52
9.7 Check CO
2
content and if necessary set
(air-ratio adjustment) . . . . . . . . . . . . . . . . . . . . . 53
10 Recycling and disposal . . . . . . . . . . . . . . . . . 54
10.1 Appliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
10.2 Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54