Bedienungsanleitung Vaillant Control Center VR 65 (Seite 10 von 12) (Englisch)

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10 Installation Instructions for Control Center VR 65

6 Start-up

The initial start-up of the VR 65 is carried out together

with the initial start-up of the heating appliance.

Note!

In the factory settings, the heating appliance

operation is set to warm water priority.

Note!

To comply with the approvals, the boiler must

be Vaillant ecoTEC if the cylinder NTC solution

is used.

If a parallel operation for central heating and charging of

the DHW cylinder is required, change this setting on the

boiler in the following way.

• Press the “i” and “+” keys simultaneously.

The display shows “d.00”.

• Use the “+” or “-” keys to scroll to the diagnostic

number d.97 to enter the second diagnostic level.

• Press the “i” key.

The display shows the relevant diagnostic information.

• Use the “+” or “-” keys to change the value (display

flashes) to 17 (password).

• Save the new value by pressing and holding down the

“i” key for approx. 5 seconds until the display no long-

er flashes.

• Use the ‚+‘ and ‚-‘ keys to scroll to the diagnostic point

d.70

• Press the “i” key.

Change the setting using the ‚+‘ and ‚-‘ keys.

• Save the new value by holding down the “i” key for

approx. 5 seconds until the display no longer flashes.

You can end the diagnostic mode as follows:

• Press the “i” and “+” keys simultaneously.

The following settings are possible:

Display Meaning

Factory

setting

0 Warm water priority

- The 3-port valve is in the heating or

hot water position depending on the

operating mode.

- With 2-port valves, either the DHW

valve or the CH valve is open, both

valves are closed on standby.

1 Enable mid position

- The 3-port valve is in the mid position

for simultaneous heating and hot

water request, or in the heating or

hot water position, depending on the

operating mode.

- With 2-port valves, both valves are

open during simultaneous heating

and hot water request. Otherwise,

only one valve is always open and

both valves are closed on standby.

2 Only heating mode (only for test

operation!)

- Only the CH valve is activated.

Table 6.1 Heating appliance settings

7 Troubleshooting

The Control Center VR 65 has a green Operating LED,

which can be monitored when the housing cover is

removed (see fig. 4.2).

Problem Cause Remedy

LED permanently

off

No 230 V supply

available or fuse in

appliance defective

- Check whether the

mains voltage cable

is connected

correctly.

- Check the mains

fuse for the 230 V

supply and

reconnect the mains

supply.

- Replace the mains

fuse in the VR 65

(4 A slow).

LED permanently

No error - Normal operation

LED flashes quickly Short circuit of the

connected tempera-

ture sensor (NTC) in

the DHW cylinder

- Check the cable of

the temperature

sensor (NTC) for

damage.

- Replace the temper-

ature sensor (NTC)

in the DHW cylinder.

LED flashes slowly Communication error

in eBUS protocol to

the boiler

- Inform the Vaillant

customer service.

Table 7.1 Troubleshooting

6 Start-up

7 Troubleshooting

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