Speed control
Fan Boost
Error
Bypass
Defrosting
Filter timer reset
Operation
Speed control: Press to switch from Speed 1 to 4, speed 1 is “traveling
mode”, when switch to this mode, the ventilator turns to super low speed.
Fan Boost: Press to switch to the boost speed for 30 minutes, and then
return to original status.
Filter timer reset: After 60 days running, when the filters is needed clean-
ing or replacement, the light will be illumined. After replacement or clean-
ing, hold this button for long time to reset the filter timer.
Error Indicator: When it’s illumined, the fan or the sensors are in error,
the indicator lights off after error cleared.
Bypass: When bypass is on, it will be illumined. When bypass is off, then
the light is off, bypass opening temperature: Outdoor 17 to 21 degree Cel-
sius.
Humidity control: when the ventilator is running, if indoor humidity over
75%RH, ventilator will enter the boost speed, until the humidity lower than
75%RH.
CO2 control (optional): By connecting a CO2 sensor to it, when the ven-
tilator is running, if the indoor CO2 value over 1000PPM, ventilator will en-
ter the boost speed, until the CO2 value lower than 1000PPM.
Defrost: When defrost mode is activated, it will be illumined. Defrost mode
activated temperature: Outdoor less than or equal to –5degree Celsius.
Note: In order to prevent frost inside the device, the ventilator is in auto-
matic adjustment and cannot be operated when in defrost mode.
The above values are default values, user can change the default
values by optional touch screen controller or Modbus system.
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Air volume setting: Press “Speed” to select speed 1 to 4, then press “+”
or “-” to set air volume for the selected speed, after 4 speeds setting done
then press “Speed” again to save setting or it will be automatically saved
after 15 seconds without operation.
Balance rate setting: Long press the “Speed” button for 6 seconds when
the digital display shows "LPL", press "+" or "-" to set the air volume bal-
ance rate of supply and exhaust.
1) The value is 0, then supply airflow is equal to exhaust airflow.
2) The value is 1 to 50, then supply airflow is larger than exhaust airflow.
Note: the larger the value, the smaller the exhaust airflow.
3) The value is –50 to –1, then supply airflow is less than exhaust airflow.
Note: the larger the absolute value, the smaller the supply air-
flow.
Right and left installation switching: Long press the "+" key for 6 sec-
onds when the digital display shows "PLP", press “Speed” button to switch
between the right and left installation modes. The number 1 represents
the right type, and the number 2 represents the left type.
Note: The setting must be consistent with the installation form,
otherwise, it will affect the use of the ventilator.
Restore factory settings: press the "+" and "-" buttons at the same
time, the air volume and air volume balance rate will return to the factory
default settings.
RS485 address setting: Long press the "-" key for 6 seconds, press "+"
or "-" to set the RS485 address of the ventilator for centralized control.
Panel 2 Instruction
Speed button
+
-
Operation
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