Setting The Maintenance Interval; Handing Over To The End User; 10 Troubleshooting; Contacting Your Service Partner - Vaillant ecoTEC plus VU 446/5-5 (H-GB) Installation And Maintenance Instructions Manual

Applicability: VU 606/5-5 (H-GB)
B
1 2
1200
1000
800
600
400
200
0 500 1000 1500
1 Flow range without
operating the product
2 Operating range with
limited flow temperature
and power
3 Pump curve at 100%
PWM
In order to guarantee that the product works without any
problems, the flow rate is permanently monitored to determ-
ine the operating range.
8.2.6 Setting the maximum flow temperature
You can use diagnostics code D.071 to set the required
maximum flow temperature for the heating mode (factory
setting: 75 °C).
8.2.7 Setting the return temperature control
If the product is connected to an underfloor heating system,
the temperature control setting can be changed from flow
temperature control (factory setting) to return temperature
control using diagnostics code D.017.
8.3

Setting the maintenance interval

If you set the maintenance interval, after a configurable num-
ber of burner operating hours, the message that the product
must be serviced appears in the display, together with the
maintenance symbol .
▶
Use diagnostics code D.084 to set the operating hours
until the next maintenance work is due.
You can set the operating hours in increments of ten from 0
to 3010 h (hours).
If you do not set a numerical value but do set the symbol "–",
the function Maintenance messages is not active.
Note
On completion of the set operating hours, you
must set the maintenance interval again.
0020261389_02 ecoTEC plus Installation and maintenance instructions
3 4
2000 2500 3000 3500
ΔP constant
4
A Installation volume flow
in l/h
B Remaining pump head
in hPa (mbar)

Handing over to the end user 9

9 Handing over to the end user
1. When you have finished the installation, attach the
sticker supplied in the end user's language to the front
of the product.
2. Explain to the end user how the safety devices work
and where they are located.
3. Inform the end user how to handle the product. Answer
any questions the end user may have. In particular,
draw attention to the safety warnings which the end
user must follow.
4. Inform the end user that they must have the product
maintained in accordance with the specified intervals.
5. Pass all of the instructions and documentation for the
product to the end user for safe-keeping.
6. Instruct the end user about measures taken to ensure
the combustion air supply and flue system. Point out,
in particular, that the end user must not make any
changes, however minor.
A

10 Troubleshooting

You can find an overview of the fault codes in the appendix.
Fault messages – Overview (→ Page 46)
10.1

Contacting your service partner

If you contact your service partner, if possible, please men-
tion
–
The fault code that is displayed (F.xx),
–
The product status that is displayed (S.xx).
10.2

Calling up service messages

If the maintenance symbol
a service message that has to be called up.
The maintenance symbol appears if you have set a mainten-
ance interval, for example, and it has elapsed. The product is
not in fault mode.
▶
To obtain more information about the service message,
call up the Live Monitor. (→ Page 21)
10.3

Reading off the fault codes

If a fault occurs in the unit or in the system, the display
shows an F.xx code.
Fault messages – Overview (→ Page 46)
Fault codes have priority over all other displays.
If multiple faults occur at the same time, the display shows
the corresponding fault codes for two seconds each in se-
quence.
▶
Eliminate the fault.
▶
To restart the product, press the reset button
ating instructions).
▶
If you are unable to remedy the fault and the fault recurs
despite reset attempts, contact customer service.
appears in the display, there is
( Oper-
31