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8.2 Automatic 3-speed switch (Xcell 400 QVW model only)
The terminal box for all wiring connections is situated on top of the MVHR. Refer to sections 7.2, 7.3, 7.4 and 7.5 for
the relevant wiring diagrams and additional controllers that are compatible with the Automatic 3-Speed Switch.
With jumper 8 selected on the PCB, the Automatic 3-Speed Switch is active. Up to ten Automatic 3-Speed Switches
can be connected in parallel to each MVHR.
Minimum size of 3-core cable to be used for switch connections: 0.5mm².
Key features:
-
Plus and minus keys to manually change speed
-
3 LEDs for speed indication / white housing
LED Indicators:
-
Moisture Protection
LED 1 flashes briefly every second
Important:
an interval time is programmed into the Moisture Protection setting.
Interval time: 17 mins. ON
13 mins. OFF, etc.
-
Speed 1
LED 1 on
-
Speed 2
LED 2 on
-
Speed 3
LED 3 on
-
MVHR Off
LEDs 1+2+3 off
-
Filter service
LED 1 flashes quickly continuously (until reset as described below)
-
Timer reset
LEDs 1+2+3 flash 5 times in quick succession (to acknowledge reset is complete)
-
Fault alarm
LEDs 1+2+3 flash every second
-
Fault alarm reset
Mains voltage briefly interrupted
Settings:
-
MVHR On
Press plus key
-
MVHR Off
Press minus key until speed 0 is reached, i.e. 3>2>1>Moisture Protection>0,
MVHR OFF
-
Reset timer
Press plus and minus keys together and hold for 2 seconds
-
Speed 3
Speed 3 time-limited (only when no other controllers are used alongside the
Automatic 3-Speed Switch): after 1 hour, the MVHR automatically switches back to
Fan speed 2.
Important note – The On / Off function (which is only possible when no other controllers / sensors are used
alongside the Automatic 3-Speed Switch) can be disabled with jumper 9 on the PCB. When jumper 9 is selected
the switch changes from normal ventilation mode (speeds 1 to 3) to Moisture Protection mode.
Filter service indicator:
The period for the filter service timer (3 months) is set and stored and cannot be changed.
Once the period of 3 months has expired, the switch will indicate that a filter service is necessary whereby the LED
for Fan speed 1 flashes every second.
Once the filter has been successfully serviced i.e. cleaned or changed, the filter service timer on the switch can be
reset by pressing both OPERATING KEYS (and holding for 2 seconds) and the filter service indicator on the switch
will go out. Resetting is acknowledged by LED 1 flashing quickly 5 times.
In the event of a full MVHR service outside the above 3 month period, the timer can also be reset, without the filter
service timer having completed its runtime, by pressing both operating keys together and holding for 10 seconds.
Resetting is acknowledged by LED 1 flashing quickly 5 times.
Содержание Xcell 400 QV
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