UL18FH - Air Conditioning LG - Free user manual and instructions
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| Product Type | Split Air Conditioner (Wall-Mounted) |
| Model | UL18FH |
| Brand | LG |
| Cooling Capacity (BTU/h) | 18,000 |
| Heating Capacity (BTU/h) | 19,000 (Electric Heat) |
| Power Supply (V/Hz/Ph) | 208-230 / 60 / 1 |
| Rated Cooling Power (W) | 1,800 W |
| Rated Heating Power (W) | 1,950 W |
| Energy Efficiency Ratio (EER) | 10.0 |
| Seasonal Energy Efficiency Ratio (SEER) | 13.0 |
| Refrigerant Type | R-410A |
| Indoor Unit Dimensions (W x H x D, inches) | 41.7 x 12.0 x 8.7 |
| Outdoor Unit Dimensions (W x H x D, inches) | 33.5 x 25.6 x 11.8 |
| Indoor Unit Weight (lbs) | 28.7 |
| Outdoor Unit Weight (lbs) | 68.3 |
| Indoor Sound Level (Low/High, dB) | 27 / 42 |
| Outdoor Sound Level (dB) | 54 |
| Air Flow (CFM) | 600 (High Cool) |
| Filter Type | Washable, Anti-Microbial |
| Functions | Cool, Heat, Dehumidify, Fan, Auto Changeover |
| Remote Control | Wireless, with LCD Display |
| Timer | 24-Hour On/Off Scheduling |
| Sleep Mode | Yes |
| Auto Restart | Yes (After Power Failure) |
| Maintenance | Clean Filter Every 2 Weeks; Annual Professional Service |
| Repair Parts Availability | LG Authorized Parts Distributors |
Frequently Asked Questions - UL18FH LG
How do I clean the air filter?
Turn off the unit and disconnect power. Open the front panel, remove the filter, and wash it with mild detergent and water. Let it dry completely before reinstalling. Clean every 2 weeks for optimal performance.
What does error code 1-2 mean?
Error code 1-2 indicates an indoor fan motor malfunction. Check for obstructions, ensure the fan spins freely, and reset the unit. If persistent, contact LG service.
How do I set the timer?
Press the TIMER button on the remote. Use the +/- buttons to set the desired ON or OFF time. The unit will automatically start/stop at the set time.
Can I use the air conditioner in winter?
Yes, the UL18FH has a heating function (electric heat). Set the mode to HEAT and adjust the temperature. Outdoor temperatures must be above 0°F for proper operation.
How often should I schedule professional maintenance?
It is recommended to have a qualified technician inspect and service the unit once a year, preferably before the cooling season.
What is the recommended thermostat setting?
For cooling, set between 72-78°F (22-26°C). For heating, set between 68-72°F (20-22°C). Each degree adjustment can save up to 3% energy.
How do I change the batteries in the remote?
Slide the battery cover on the back of the remote, remove old batteries (AAA), insert new ones with correct polarity (+/-), and replace the cover.
Why is the unit not turning on?
Check if the circuit breaker is tripped, ensure the remote has fresh batteries, and that the power cord is securely plugged. Also, verify that the timer function is not activated.
What is the meaning of 'Auto Clean' function?
Auto Clean dries the evaporator coil after operation to prevent mold and bacteria growth. It runs the fan for a few minutes after the compressor stops. This feature can be enabled via remote.
How do I switch between Fahrenheit and Celsius?
While the remote is off, press and hold the TEMP button (up arrow) and MODE button simultaneously for 5 seconds. The display will toggle between °F and °C.
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USER MANUAL UL18FH LG
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Product information
Brand : LG
Model : UL18FH
Category : Air Conditioning