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Hydro Unit
Owner’s Manual
19. Indication
Description
Clock: Displays the current time (AM or PM).
Displays days of the week (Sunday to Saturday).
Lights when the NIGHT button is pressed and goes out when the button is pressed again.
Lights when nighttime quiet operation is set.
Indicates scheduled operation 1 status (including setting time).
Displays the scheduled operation step when the scheduled operation STEP1-5 program is set.
Lights during time setting and scheduled operation setting.
21. Indication
Description
Lights while internal pump (pump 1) or expansion pump (pump 2) is driven.
Lights when the auxiliary boiler or external booster heater supports the heat pump operation.
Lights when the unit enters the data set mode and goes out when the unit exits the data set mode.
Lights when the unit enters the service mode and goes out when the unit exits the service mode.
Lights when an error occurs and goes out when the error is cleared.
Lights for two seconds when settings are completed.
Lights for two seconds when settings failed.
6-EN
