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67
Final Installation Procedures
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
FINAL INSTALLATION PROCEDURES
Installer Mode
It will be necessary to switch to Installer mode if the system needs to operate in Heating Only or
Cooling Only modes, or the Pump Down procedure needs to be performed.
To Enter Installer Mode:
1. Press the Reset and “A” buttons. A very slender tool is needed to access the Reset button.
2. Set the code by pressing the Up and Down Temperature buttons, and then press the ON / OFF
button. The Up Temperature button changes the code on the ten (10) digit; the Down Temperature
button changes the code on the one (1) digit.
Press
SETUP
Figure 115: Using the Handheld Con-
troller to Change System to Installer
Mode.
Installer Mode, Cooling Only Mode
• After the system is in Installer mode (with Cooling Only mode initiated), automatic operation is suspended.
• After Cooling Only mode is disabled, the system will return to normal operation.
• Installer mode cannot be entered if the unit is running. The system must be completely OFF.
• All Installer code numbers must be entered when system is OFF.
• WLAN Module’s communication time will lag by about one (1) minute after unit is turned back on, and in normal operating mode.
• Entire lock or Mode lock cannot be set if heating or automatic operation is set through a central controller.
Disabling Cooling Only Mode
After Pump Down procedure has been performed, Cooling Only
mode will need to be disabled, and the system will need to be re-
turned to normal operating mode.
1. Supply power to the system, but system must be OFF with all
functions inactive.
2. Enter the Installer mode.
3. Set code to 43 for HEV2, HFV3 systems, or 46 for HXV2
systems.
4. Press ON / OFF button and select the code number 43 for
HEV2, HFV3 systems, or 46 for HXV2 systems. Unit will beep to
acknowledge that code has been received.
5. Turn off power for a minimum of 30 seconds.
6. Turn power back on to system.
Enabling Cooling Only Mode
Before running the Pump Down procedure, the unit must be
switched to Cooling Only mode. To be able to run Cooling Only
mode, the unit must be changed to Installer mode (see previous
page for instructions).
1. Supply power to the system, but system must be OFF with all
functions inactive.
2. Enter the Installer mode.
3. Set code to 45 for Mega (HEV2), Standard Efficiency (HFV3),
and Mega 115V (HXV2).
4. Press ON / OFF button and select the code number 45. Unit will
beep to acknowledge that code has been received.
5. Turn off power for a minimum of 30 seconds.
6. Turn power back on to system.
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