Vaillant ecoTEC exclusive, Installation And Maintenance Instructions Manual

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9 Troubleshooting
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Installation and maintenance instructions ecoTEC exclusive 0020189875_01
8.5 Hydraulic check
The hydraulic check is used to determine the relevant vari-
ables for differential pressure and volume flow and may, as
a result, be used to check the pipe network in the heating
installation or to support the hydraulic balancing. After spe-
cifying a pressure level between 100 and 400 mbar, the in-
ternal pump is actuated at the target differential pressure.
If the target pressure has been reached, the display shows
the volume flow that is to be set for the current status of
the heating installation. Conversely, the required differen-
tial pressure can be determined for the required volume flow.
▶
Navigate to Menu
→
Installer level
→
Test programs
→
Hydraulic check and confirm by pressing .
–
Minimum volume flow:
≥
180 l/h
▶
Specify a pressure level and confirm by pressing .
▶
Wait until the volume flow has been set.
8.6 Setting solar drinking water post-heating
▶
Navigate to Menu
→
Installer level
→
Diagnostics menu
→
D.058 Solar post-heating and confirm by pressing .
▶
Set the solar post-heating and confirm by pressing .
–
Adjustment range: 60 … 80
℃
▶
For products with integrated flow rate limiters, replace
the flow rate limiter with a special version for high water
temperatures.
▶
Ensure that the temperature at the product's cold water
connection does not exceed 70 °C.
▶
If required, install a thermostatic mixer valve upstream of
the product.
8.7 Handing the product over to the end user
▶
When you have finished the installation, affix the en-
closed sticker (which requests that the user reads the
instructions) to the front of the product in the end user's
language.
▶
Explain to the end user how the safety devices work and
where they are located.
▶
Inform the end user how to handle the product.
▶
In particular, draw attention to the safety warnings which
the end user must follow.
▶
Inform the end user that they must have the product
maintained in accordance with the specified intervals.
▶
Pass all of the instructions and documentation for the
product to the end user for safe-keeping.
▶
Inform the end user about measures taken to ensure the
combustion air supply and flue system, and instruct the
end user that he must not make any changes.
▶
If the product is equipped with a communication unit for
connecting to a broadband Internet connection, point
out to the end user that they can download an app from
Google Play™ or the App Store™ and use it for mobile
operation.
▶
In this case, point out to the end user the product inform-
ation sticker with Data Matrix Code that is on the rear of
the front flap, as they will need this in order to use the
app.
9 Troubleshooting
9.1 Comfort protection mode for the heat cell
Conditions : Neither nor a fault code F.xx are shown in the display
Unusual operating noises are emitted from the heat cell in
the product.
▶
Check whether S.40 is displayed in Live monitor .
If S.40 is displayed, the product is in a temporary test mode,
which it will exit again automatically.
Conditions : is displayed.
The Live monitor shows S.40 and D.118 is at 0. The heat
cell is in permanent comfort protection mode. This is not
caused by the all-gas sensor.
▶
Decommission the product and check the entire air/flue
pipe.
▽
Are there any blockages or leakages?
▶
Eliminate the cause.
▽
Are any components damaged?
▶
Replace the defective components.
▶
If the air/flue pipe is OK, restart the product.
▶
Prepare the flue gas analyser for checking the recircula-
tion.
◁
The measuring probes must be rinsed and must not
be contaminated by a previous measurement.
▶
Check for recirculation at the air test point. The following
measured values are indicators of recirculation.
–
Oxygen value in the intake air: < 20 vol. %
–
Intake air CO value:
≥
100 ppm
▽
Recirculation is present.
▶
Eliminate the deficiencies in the air/flue pipe.
▽
No recirculation is present.
▶
Ensure that there is a heat requirement. In the
Live Monitor, check whether the product has the
status
S.04 or S.14 .
▶
If the combustion values are not OK, carry out check
programmes
P.04 and P.14 .
Conditions : and F.55 are displayed
The Live monitor shows S.40 and D.118
≥
1. The heat cell
is in permanent comfort protection mode.
▶
Check and, if required, replace the all-gas sensor.
9.2 Checking service messages
▶
To obtain further information, call up the Live monitor .
(
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Page 15)
Conditions : S.40 is displayed
The product is in Comfort protection mode. The product has
detected a temporary fault and continues to run with restric-
ted comfort. The product switches back to the normal operat-
ing mode.
▶
To establish whether or not a component is defective,
read the fault memory. (
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Page 23)