Check And Test - Fujitsu AUYG07LVLA Design & Technical Manual

14. Check and test

14-1. Check run
• The check run is a function to screen and detect any wiring errors.
• After carrying out the check run, you can use the automatic wiring correction function to correct
the wiring.
• Normal operation is possible without using the check run. In this case, use the test run or
forced cooling function of the indoor unit to confirm any wiring errors.
¢ Things to confirm before starting the check run
To ensure safety, check that the following work, inspections and operations have been com-
pleted.
Check that all work on the piping connecting the outdoor unit, indoor units has
1
been completed.
Check that all work on the wiring connecting the outdoor unit, indoor units has
2
been completed.
Is there a gas leakage? (At pipe connections [flange connections and brazed
3
areas])
4 Is the system charged with the specified volume of refrigerant?
5 Is a breaker installed at the power supply cable of outdoor unit?
Are the wires connected to the terminals without looseness, and in accordance
6
with the specifications?
7 Is the 3-way valve of the outdoor unit open? (Gas pipe and liquid pipe)
8 Is the power supply connected for more than 12 hours?
¢ Restrictions applicable when performing the check run
• When the check run starts, all indoor units connected to the outdoor unit will start to run auto-
matically. During the check run, you cannot check the operation of the indoor units separately.
After the check run, check the operation of the indoor units separately in normal operation.
• The check run can be used when the temperature is within the operable temperature of the air
conditioner.
• In the check run, the air conditioner will automatically switch between cooling and heating de-
pending on the external temperature and internal temperature.
• The check run can be completed in about 30 minutes (cooling) or about 1 hour (heating), but
may take more depending on the external and internal temperature conditions etc.
• Do not conduct the check run with all the windows in the room closed.
Otherwise the room temperature could get too low or too high.
• Depending on the difference of the room temperature of each room, a judgment may be impos-
sible.
• Check run is a special operation so there may be a noise louder than the normal refrigerant
noise or a creaking noise.
Check item
- 403 -
Check column