Daikin LRNUN5A7Y1, Installer And User Reference Manual, Page: 115 / 140

21 | Commissioning
Installer and user reference guide
115
LRYELRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
6 Turn ON the remote controller of the air conditioner. See the operation
manual of the indoor unit for more information about the temperature
settings.
7 Check that the unit functions without error codes. See "21.5.1 Test run
checks" [ 4 115].
8 Check that the showcases and blower coils cool correctly.
To perform a test run of the capacity up unit
Applicable for LRNUN5*.
Prerequisite: The refrigeration circuit of the outdoor unit is operating in a stable
condition.
1 Turn ON the operation switch of the capacity up unit.
2 Wait for about 10 minutes (after power supply ON) until the communication
between the outdoor unit and the capacity up unit is confirmed. The 7-
segment display is blinking during the communication test:
▪ If communication is confirmed, the display will be OFF and the compressors
and fans start operating.
▪ If communication is not confirmed, an error code will be displayed on the
remote controller of the indoor units. See
"24.3.1 Error codes:
Overview" [
4
124].
3 Check that the unit functions without error codes. See "21.5.1 Test run
checks" [
4
115].
4 Check that the showcases and blower coils cool correctly.
21.5.1 Test run checks
Check visually
Check the following:
▪ Showcases and blower coils are blowing cold air.
▪ Air conditioners are blowing hot or cold air.
▪ The temperature of the refrigerated room is dropping.
▪ There is no short circuit in the refrigeration room.
▪ The compressor does not switch on and off in less than 10 minutes.
Check error code
Check the remote controller of the indoor units.
The remote controller displays … Description
Room temperature The remote controller operates
correctly.
Error code See "24.3.1 Error codes:
Overview" [
4
124].