Restore Factory Setting; Error Code - Tecnosystemi HI-TECH PUR 4.0 User Manual

A. Parameters 6, 7, 8, 9 – Conventional defrosting. When the temperature of the exhaust air (FR/EA) remains lower
than the set defrost temperature (parameter 8) for at least 1 minute, and at least a minimum amount of time has passed
since the previous defrosting cycle (parameter 7), then the supply fan stops while the exhaust fan works at maximum
speed until an exhaust air temperature of 15°C is reached for one minute or until the maximum time of the defrosting
cycle (parameter 9).
B. Parameters 10, 11 – CO2 function (function that can only be activated with a CO2 probe connected, not supplied).
When the CO2 sensor detects a concentration higher than the set value (parameter 11) for more than 5 seconds, the
fan will go to maximum speed. When the CO2 concentration read returns to a lower value than the one set for at least
5 seconds, the fan will return to the previous working condition.
C. Parameters 12, 13 – Humidity function (function that can only be activated with a humidity probe connected, not
supplied). When the humidity sensor detects a concentration higher than the set value (parameter 13) for more than
5 seconds, the fan will go to maximum speed. When the humidity concentration read returns to a lower value than the
one set for at least 5 seconds, the fan will return to the previous working condition.
6.5 FILTER ALARM:
Parameter 18 to set the filter alarm time. When the operation time of the ventilator exceeds the setting time, the filter
icon will flashes to remind user clean the filter. After cleaning, set Parameter 17 to be 1 to recount the time.
Filter alarm On Filter alarm Off

6.6 RESTORE FACTORY SETTING:

In the power on state, press the buttons of "△" and "▽" simultaneously for more than 6 seconds to restore the product
parameters to the factory default, ventilator will turn off after restore to factory default.
6.7 ERROR CODE CHECKING:
From the main interface (i.e. in RA mode "Internal temperature display"), short press SET button to check the error code. Press
the UP or DOWN buttons to exit.
No Error Error alarm
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