Test Running; High Pressure Control - Carrier P5 Series Owners And Installation Manual

TEST RUNNING

• Perform the operating test after the units have been installed in position and the gas leak test
has been completed.
• Check all electrical connections(instructions and wiring diagram).
• Insert the batteries into the remote control and leave it OFF.
• Energise the system, turning the power supply ON.
• Press the and buttons of the infrared remote control and hold them pressed for more
than 5 seconds. The display will be cleared, the time segments will display the icon(Src=service
test)
When test mode is selected, the unit operates as described below:
• The green LED and the orange LED blink every 2 seconds.
• The indoor fan operates at low speed.
• The louver operates according to "Auto heat" or "Auto cool" based on operating mode.
• The system works in Cool Mode at fixed compressor frequency for 3 minutes.
• The system works in Cool Mode until Test Mode is exited.
During the cool mode and heat mode check the following conditions:
1. Difference between indoor ambient temperature and indoor unit air discharge temperature
must be greater than 3°C.
2. Indoor fan must operate at low speed.
3. Louver must be in auto heat or cool louver based on operating mode.
4. No fault code must be signalled by the system.
If one of the above conditions is not positive, please check the correct installation of the system.
• After test has been completed. press button

HIGH PRESSURE CONTROL

Unit for Middle East has high pressure switch to prevent head pressure from being out of limit due to high ambient.
If "High pressure switch" trips, cycle the power supply OFF and ON to reset the system, because electrical box is equipped with relay that prevent the unit from
starting, till the indoor unit is switched OFF.
When head pressure drops below 23bar, it is possible to restart the unit switching the indoor control ON.
on the remote control to leave the test menu.
NOTE
When 30 minutes have elapsed and no buttons have been pressed,
the remote control will automatically exit the test menu and re-
sume its normal operation.
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