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TEST OPERATION AND CHECK AFTER INSTALLATION
Test operation
1. Before test operation
• Do not switch on power before installation is finished completely.
• Electrical wiring must be connected correctly and securely.
• Shut-off valves of the connection tubes should be opened.
• All impurities such as scraps and particulates must be cleared from the unit.
2. Test operation method
• Switch on power and press the ON/OFF pad on the remote control to turn on the air conditioner.
• Press the MODE pad and check the operation conditions of each of the modes.
10,000 and 14,000 BTU models only:
• If the remote control is lost, the emergency run operation can be performed with a ballpoint pen
or similar object.
a. When the unit is off, set the handling switch to the AUTO mode.
The unit will then automatically run in the mode selected by
the microcomputer system according to the surrounding
temperature. If you want to turn the unit off, press the
handling switch again.
b. When the unit is on, set the handling switch to the STOP mode to
turn off the unit.
20,000 BTU models only:
• If the remote control is lost, open the front access panel and
perform the following:
a. Set the handling switch to the AUTO position to operate in the
AUTO mode. Once there is a remote control signal, the unit will
again be controlled by that signal.
b. Set the handling switch to the STOP position to turn off the unit.
Installation Checklist
16
Installation Instructions
13
Handling
switch
10,000 and 14,000 BTU Models
20,000 BTU Models
❑ Has the unit been securely installed? If not, the unit may fall, shake or make noises.
❑ Has the refrigerant leak test been performed? Leakage may cause insufficient cooling capacity.
❑ Does the unit drain well? Poor drainage can cause condensation and dripping.
❑ Is the voltage correct according to the nameplate? Incorrect voltage may cause electrical malfunction. Diagnostic
information is available for this unit. Contact your service technician.
❑ Is the unit properly grounded? A nonsecure ground connection can cause damage.
❑ Are the air inlet and outlet completely free of cover? Covering the air inlet or outlet may cause insufficient cooling
capacity.
❑ Have the length of the connection tubing and refrigerant capacity been recorded? It is important to know these
things for future reference.
Handling
switch