7 | Operation
Installer and user reference guide
28
RXYTQ
VRV IV+ heat pump for high ambient temperatures
4P561157-1B – 2021.11
▪ The micro computer automatically determines temperature and fan speed
(cannot be set by the user interface).
▪ The system does not go into operation if the room temperature is low (<20°C).
7.4.2 To use the dry program (WITHOUT cool/heat changeover remote control switch)
To start
1 Press the operation mode selector button on the user interface several times
and select (program dry operation).
2 Press the ON/OFF button of the user interface.
Result: The operation lamp lights up and the system starts operating.
3 Press the air flow direction adjust button (only for double-flow, multi-flow,
corner, ceiling-suspended and wall-mounted). Refer to "7.5Adjusting the air
flow direction"[429] for details.
To stop
4 Press the ON/OFF button on the user interface once again.
Result: The operation lamp goes out and the system stops operating.
NOTICE
Do not turn off power immediately after the unit stops, but wait for at least 5
minutes.
7.4.3 To use the dry program (WITH cool/heat changeover remote control switch)
To start
1 Select cooling operation mode with the cool/heat changeover remote control
switch.
2 Press the operation mode selector button on the user interface several times
and select (program dry operation).
3 Press the ON/OFF button of the user interface.
Result: The operation lamp lights up and the system starts operating.
4 Press the air flow direction adjust button (only for double-flow, multi-flow,
corner, ceiling-suspended and wall-mounted). Refer to "7.5Adjusting the air
flow direction"[429] for details.
To stop
5 Press the ON/OFF button on the user interface once again.
Result: The operation lamp goes out and the system stops operating.
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