Reading The Meter Status; Locking The Control Elements; Checking The Immersion Heater - Vaillant aroSTOR VWL B 270/5 Installation And Maintenance Instructions Manual

Note
The amount of power available depends
on the load relief level and the time period
(Comfort, Eco, Frost protection, High/Low
tariff) that have been programmed.
4. Press the rotary knob to confirm the selection.
5. Press the menu button to return to the original display.
8.10

Reading the meter status

1. If you want to read the product's counter statuses, se-
lect this menu INST.MENU COUN TERS.
2. Press the rotary knob in the COUN TERS menu.
◁
No. 1 = Number of heat pump switching operations
◁
No. 2 = Number of immersion heater switching op-
erations
◁
No. 3 = Function deactivated
◁
No. 4 = Number of compressor operating hours
3. Press the menu button to return to the original display.
8.11

Locking the control elements

1. Turn the rotary knob until the LOCK ING menu is dis-
played.
–
If the control elements are blocked, you can only
reset the fault codes or unblock the control ele-
ments INST.MENU LOCK ING.
2. Press the rotary knob to confirm.
3. Turn the rotary knob to set the automatic level of lock-
ing.
◁
no = Automatic blocking is not active.
◁
Auto = The control elements are blocked 60
seconds after the last entry. This is how you
unblock the control elements (→ Page 75).
◁
Pro = The control elements are blocked 300
seconds after the last entry. This is how you
unblock the control elements (→ Page 75).
4. Press the rotary knob to confirm the selection.
5. Press the menu button to return to the original display.
8.11.1 Unblocking control elements in the Auto
mode
1. Press and hold the menu button for three seconds.
2. Select the rotary knob YES.
3. Press the rotary knob to confirm the selection.
4. Press the menu button to return to the original display.
8.11.2 Unblocking control elements in the Pro
mode
1. Press and hold the menu button for three seconds.
2. Press and hold the rotary knob and the clock button for
three seconds.
3. Select the rotary knob YES.
4. Press the rotary knob to confirm the selection.
5. Press the menu button to return to the original display.
8000015884_00 Installation and maintenance instructions
8.11.3 Manually locking the operator control
elements
1. In the basic display, hold down the menu button and
the clock button for three seconds.
2. Select the rotary knob YES.
3. Press the rotary knob to confirm the selection.
4. To lift manual locking, hold down the menu button for
three seconds .
8.11.4 Preparing a blower door test
1
1. If you want to carry out a blower door test, you must
seal the product's condensate overflow.
2. Use the supplied plug (1) to seal the condensate over-
flow.
Caution.
Risk of material damage when closing the
condensate overflow
The condensate cannot flow out via the over-
flow if the waste-water pipework is blocked.
▶
After the blower-door test and before
starting up the product, ensure that the
plug for sealing the overflow has been re-
moved.
3. You will need to remove the plug from the condensate
overflow before starting up the product again.
8.12

Checking the immersion heater

3
2
4
1
1. Press the on/off button.
2. Disconnect the product from the power grid.
3. Drain the product. (→ Page 77)
6
5
75