Zehnder Rittling ComfoAir 70, Operating Manual And Assembly

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2.3 Operating Functions and Signalizations of the control panel
Symbol Designation Explanation
After selecting the required fan speed, the LED-display goes
into the inactive mode-energy saving function after a minute
(The device is on but the LED-Display is in the sleep mode).
After touching the control panel once again, the LED-Display is
again activated.
Fan speed 0 (FS0) The fans stand still. The flaps are closed.
Fan speed 1 (FS1) By touching the operating field once, the smallest fan speed is
set.
Fan speed 2 (FS2) By touching the operating field the second time, the medium fan
speed is set.
Fan speed 3 (FS3) By touching the operating field the third time, the highest fan
speed is set.
Boost ventilation mode By touching the operating field for the fourth time, the boost
ventilation mode or party mode is set. Touching the operating
field again changes the device to the fan speed 0.
Signalling frost protection
threshold falls below
(depending the selected
fan speed) If the device is in the frost protection mode after exceeding the
frost protection threshold and the user changes to a fan speed,
which also exceeds the frost protection threshold, then the
whole LED-Ring blinks repeatedly. If the frost protection
threshold in the selected fan speed does not exceed then,
similar to the normal operation, the correspondingly selected fan
speed is displayed.
Signalling Error messages A blinking red LED below the error-symbol at the right upper
margin displays an error message. Refer to chapter 3.4 for this
purpose.
Signalling
filter symbol / filter run-
time
For cyclic filter checking, an operating hours counter is
integrated in the control. The operating hours are counted
backwards from the pre-set filter run-time. After the filter run-
time had lapsed, a white LED blinks. The filters are to be then
checked and, if required, changed; for this purpose refer to
chapter 2.3.1.