trial operation of the ERVtrial operationff Start the trial operation by pressing the KEY1 button below the display (7-segment) Press the KEY1 button again to endthe trial operationff will be displayed on the display 1 during trial operationdescription of ERV displaySEG1: Displays "U" when ERV is communicating with a wired remote controllerSEG2: Displays RMC address of the ERV (0~F)SEG3/SEG4: Displays the main address of the ERV (0~47)❇❇ If the display is showing "U0 00" as shown above, it means that ERV is communicating normally with a wired remotecontroller and its RMC address is "0" and the main address is "00"View mode of ERVff If you press KEY 2, various data will be displayedff Displayed data will vary as shown in below table, depending on the number of times you press the KEY 2Number of pressedtimes displayed content Example display on segmentSEG1 SEG2 SEG3 SEG41 Discharge air fan RPM 1,350 RPM 1 1 3 52 Supply air fan RPM 950 RPM 2 Off 9 53 Indoor temperature 25 °C 3 Off 2 54 Outdoor temperature 30 °C 4 Off 3 05 CO2 concentration 1)* 1,220 ppm 5 1 2 26 number of installed (ERV) units 3 units 6 Off 0 37 Indoor humidity 2)* 40 7 Off 4 08 Outdoor humidity 2)* 50 8 Off 5 09 Developer mode❇❇ Press the KEY2 switch for more than 3 seconds to reset❇❇ 1)* For the models without CO2 sensor, 00 will be displayed on SEG3, 4❇❇ 2)* For the models without humidity sensor, 00 will be displayed on SEG3, 4ENGLISH-2502 INStALLING tHE PRodUCt