Introduction 1; Notes On The Documentation; Other Instructions Supplied With This Appliance; Safety Instructions And Symbols - Vaillant ecoTEC plus Instructions For Installation And Servicing

8.1.5 Spark electrode . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.1.6 Removing the burner . . . . . . . . . . . . . . . . . . . . . . 29
8.1.7 Combustion chamber and heat exchanger . . . . 30
8.1.8 Condensate drain . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8.1.9 Inner casing panel seal check . . . . . . . . . . . . . . . 31
8.1.10 Checking the expansion vessel (If fitted). . . . . . 31
8.1.11 Re commissioning the boiler . . . . . . . . . . . . . . . . 31
8.1.12 Test operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
9 Combustion analysis . . . . . . . . . . . . . . . . . . . . 32
9.1 Check CO2 content . . . . . . . . . . . . . . . . . . . . . . . . 32
10 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . 33
10.1 Logical fault finding procedure . . . . . . . . . . . . . . 33
10.1.1 Status codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
10.1.2 Diagnostic codes . . . . . . . . . . . . . . . . . . . . . . . . . . 33
10.1.3 Fault codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
10.1.4 Fault memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
10.2 Test programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
10.3 Resetting parameter to factory settings . . . . . . 37
11 Parts replacement . . . . . . . . . . . . . . . . . . . . . 38
11.1 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . 38
11.2 Replacing the burner. . . . . . . . . . . . . . . . . . . . . . . 38
11.3 Replacing the gas valve . . . . . . . . . . . . . . . . . . . . 38
11.4 Replacing the fan . . . . . . . . . . . . . . . . . . . . . . . . . . 38
11.5 Replacing the heat exchanger . . . . . . . . . . . . . . . 38
11.6 Replacing the condense trap and siphonic drain . 39
11.7 Replacing electronics and display . . . . . . . . . . . 39
12 Recycling and disposal . . . . . . . . . . . . . . . . . . 40
12.1 Appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
12.2 Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
13 Vaillant service . . . . . . . . . . . . . . . . . . . . . . . . 40
14 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Instructions for installation and servicing ecoTEC plus / 0020020828_05
1 Introduction
1.1

Notes on the documentation.

To ensure clarity of information in instructions a new
European standard of advice and symbols is being
introduced. To ensure compliance with this new standard
the following details are included.The following informa-
tion is intended to help you through-out the boilers
entire instruction pack. We assume no liability for any
damage caused by non-observance of these instructions.
1.1.1

Other instructions supplied with this appliance.

For the owner:
Instructions for use
Short operating instructions
Warranty card with return envelope
For the installer/service engineer:
Flue installation instructions
The instructions for any accessories and controllers
used also apply.
The Benchmark gas boiler commissioning checklist
(in this manual) should be completed by the installer
and/or the commissioning engineer.
If, after reading these instructions, you have any
questions on the operation of the boiler, please contact
either your installer or Vaillant Technical Department.
1.1.2 Retention of documents
Please retain this literature and all related documents
so that they are available whenever they are required.
If you move please pass on the documents to the buyer.
1.1.3

Safety instructions and symbols

Please observe the safety instructions in this literature
for the operation of the appliance.
d Danger!
Immediate risk of serious injury or death.
e Danger!
Risk of death from electric shock!
H Danger!
Risk of burns or scalding!
a Caution!
Potentially dangerous situations for the
product and environment.
h Note!
Useful information and instructions.
• Symbol for a necessary task

Introduction 1

no. 0020020829
no. 838404
no. 802922
no. 834449
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