11 | Commissioning
Installer reference guide
48
FTXF20~42E5V1B + ATXF20~42E5V1B
Daikin room air conditioner
4P519439-19U – 2022.09
The correct pipe size is installed and the pipes are properly insulated.
The stop valves (gas and liquid) on the outdoor unit are fully open.
11.3 To perform a test run
Prerequisite: Power supply MUST be in the specified range.
Prerequisite: Test run may be performed in cooling or heating mode.
Prerequisite: Test run should be performed in accordance with the operation
manual of the indoor unit to make sure that all functions and parts are working
properly.
1 In cooling mode, select the lowest programmable temperature. In heating
mode, select the highest programmable temperature. Test run can be
disabled if necessary.
2 When the test run is finished, set the temperature to a normal level. In cooling
mode: 26~28°C, in heating mode: 20~24°C.
3 The system stops operating 3minutes after the unit is turned OFF.
11.3.1 To perform a test run in winter season
When operating the air conditioner in Cooling mode in winter, set it to test run
operation using the following method.
For FTXF and ATXF units
1 Press to switch the system on.
2 Press the centre of , , and simultaneously.
3 Press twice.
Result: will appear on the display. Test run operation is selected. Test run
operation will stop automatically after about 30minutes.
4 To stop operation, press .
INFORMATION
Some of the functions CANNOT be used in the test run operation mode.
If a power failure occurs during operation, the system automatically restarts
immediately after power is restored.