LT123HNR - Air-conditioner LG - Free user manual and instructions
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| Product Type | Window Air Conditioner |
| Model | LT123HNR |
| Brand | LG |
| Cooling Capacity | 12,000 BTU |
| Energy Efficiency Ratio (EER) | 12.1 |
| Voltage | 115 V, 60 Hz |
| Current | 10.5 A |
| Power Consumption (Cooling) | 1,150 W |
| Dimensions (W x H x D) | 26.0 x 18.5 x 14.5 in |
| Weight | 75.0 lbs |
| Airflow (High) | 400 CFM |
| Noise Level (Indoor/Outdoor) | 54 dB / 64 dB |
| Modes | Cool, Fan, Dry, Auto |
| Fan Speeds | 3 (Low, Medium, High) |
| Thermostat Control | Digital with remote |
| Remote Control | Yes (included) |
| Filter Type | Washable mesh |
| Filter Access | Front panel (removable) |
| Installation Type | Window mounting kit included |
| Refrigerant | R-32 |
| Safety Features | Overload protection, auto restart |
| Repairability | Replaceable remote, filter; serviceable by technician |
| Warranty | 1 year parts and labor |
Frequently Asked Questions - LT123HNR LG
How do I install the LG LT123HNR air conditioner?
The unit comes with a window mounting kit. Clean the window sill, attach the accordion panels, and slide the unit in. Secure with brackets and seal gaps. For detailed steps, refer to the installation section of the manual.
How often should I clean the filter?
Clean the washable mesh filter every two weeks during heavy use. Remove the front panel, take out the filter, and rinse with lukewarm water. Let it dry completely before reinstalling.
What do the error codes mean?
Common codes: 'CH' indicates a sensor error, 'CL' means coil freeze protection, 'dF' is a defrost cycle. Refer to the manual for a full list. If persistent, contact LG support.
Can I use the air conditioner without the remote?
Yes, the unit has a control panel on the top or front. You can adjust temperature, mode, fan speed, and timer using the buttons. The remote adds convenience.
Is the LG LT123HNR energy efficient?
It has an EER of 12.1, which meets Energy Star standards. For optimal efficiency, set the thermostat to 78°F (26°C) and use the timer function.
How do I switch between cooling and fan mode?
Press the 'Mode' button repeatedly to cycle through Cool, Fan, Dry, and Auto. The indicator light shows the current mode. In Fan mode, no cooling occurs.
What is the recommended room size for this unit?
The 12,000 BTU capacity is suitable for rooms up to 550-600 square feet, depending on insulation, sunlight, and ceiling height.
How do I set the timer?
Press the 'Timer' button, then use +/- to set the desired hours (1-24). The unit will turn off or on automatically. Confirm by pressing 'Timer' again.
Why is the air conditioner not cooling?
Check the filter (clean if dirty), ensure the thermostat is set below room temperature, and verify the mode is on 'Cool'. If still not cooling, the refrigerant may be low; call a professional.
Can I replace the remote control?
Yes, replacement remotes are available from LG or third-party sellers. Use model number AKB73775701 or equivalent. The remote uses two AAA batteries.
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