Hydro Unit
Installation Manual
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■ Meaning of Indication on the top screen
In normal In error occurring
ZONE1 Lights when floor heater or radiator is connected (when the system has floor heater or radiator).
ZONE2 Lights when controlling the second temperature (It may not light depending on the system).
HOT WATER Lights when hot water supply system is connected (when the system has hot water supply).
The painted mark lights for operation mode for which temperature is to be changed.
Lights when the compressor is acting for heating or cooling operation.
Lights while the electric heater inside the Hydro Unit is energized during a heating operation.
Lights while the compressor is acting for hot water supply operation.
Lights while the electric cylinder heater is energized during hot water operation.
Lights when heating is selected.
Lights when cooling is selected.
Lights during hot water supply is selected.
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.
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Lights during water temperature control mode / room temperature control mode.
Lights during Auto mode operation.
Lights when Schedule timer or Floor drying is set to “ON”.
Lights when Night setback operation is set to “ON” and heating or cooling is selected.
Lights while Silent mode operation is actually running.
Lights while hot water boost is actually running.
Lights when Anti bacteria operation is set to “ON” and hot water operation is selected.
Lights while Frost protection operation is actually running.
Lights when Test mode or Floor drying is set to “ON”.
Displays when the remote controller is set as Second remote controller.
Lights when an error occurs and goes out when the error is cleared.
Lights when operation is limited by central remote controller setting.
■ Menu operation
(1) Press the [ ] button, then the “MENU” screen is displayed.
(2) Press the [ ] / [ ] button to select an item. The selected item is highlighted.
(3) Press the [ ] button. The setting screen appears.
To undo
Press the [ ] button to return. The display returns to the previous screen.
ZONE1
ZONE1
HEAT/COOL
HEAT/COOL
HOT WATER
HOT WATER
ZONE2
ZONE2
HOT WATER
HOT WATER
ZONE1
HEAT/COOL
HEAT/COOL
HOT WATER
HOT WATER
43-EN
44-EN
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