DX12X426H-18 - Air-conditioner Daizuki - Free user manual and instructions
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| Product Type | Split Air Conditioner |
| Model | DX12X426H-18 |
| Cooling Capacity (BTU/h) | 12,000 |
| Heating Capacity (BTU/h) | 12,000 (Heat Pump) |
| Refrigerant | R410A |
| Power Supply | 208-230V, 60Hz, 1 Phase |
| Indoor Unit Dimensions (W x H x D) | 36.2 x 11.8 x 8.3 inches (920 x 300 x 210 mm) |
| Outdoor Unit Dimensions (W x H x D) | 32.3 x 25.6 x 12.6 inches (820 x 650 x 320 mm) |
| Indoor Unit Weight | 22 lbs (10 kg) |
| Outdoor Unit Weight | 66 lbs (30 kg) |
| SEER Rating | 14 |
| Noise Level (Indoor) | 28-42 dB (Low/High) |
| Noise Level (Outdoor) | 55 dB |
| Functions | Cool, Heat, Fan, Dehumidify, Auto, Sleep, Turbo, Timer |
| Filter | Washable Mesh Filter |
| Airflow (CFM) | 400 |
| Auto Restart | Yes |
| Self-Diagnosis | Yes |
| Remote Control | Included |
| Warranty | 1 Year Parts & Labor |
Frequently Asked Questions - DX12X426H-18 Daizuki
How often should I clean the air filter?
Clean the washable mesh filter every 2 weeks under normal use. For heavy use or dusty environments, clean weekly. A dirty filter reduces efficiency and airflow.
What should I do if the air conditioner displays error code E1?
Error code E1 indicates a communication failure between indoor and outdoor units. Check wiring connections, restart the unit, and if persists, contact a professional technician.
Can I use an extension cord for this air conditioner?
No, extension cords are not recommended due to fire hazard. The unit must be plugged directly into a dedicated grounded outlet with the specified voltage (208-230V).
How do I set the timer to turn off the unit automatically?
Press the Timer button on the remote control repeatedly to set the desired off time (0.5-24 hours). The indicator will show the setting. Press Set to confirm.
What is the recommended refrigerant for this model?
This unit uses R410A refrigerant. Do not mix with other refrigerants. Always have a certified technician handle refrigerant charging or repairs.
How do I clean the outdoor unit?
Turn off power to the unit. Use a garden hose to gently spray the outdoor coils from top to bottom. Avoid using pressure washers. Remove any debris or leaves around the unit.
Why is the unit not cooling even when running?
Check if the filter is dirty, the thermostat is set correctly, and the outdoor unit is not obstructed. Also ensure the room size matches the cooling capacity (12000 BTU covers ~500 sq ft).
What does the 'Turbo' function do?
Turbo mode forces the compressor and fan to run at maximum speed to reach the set temperature quickly. It is useful for initial cooling or heating, but consumes more energy.
How do I reset the air conditioner?
Unplug the unit from the power outlet, wait 5 minutes, then plug it back in. Alternatively, use the Reset button on the remote control if available (press with a pen tip).
Is professional installation required?
Yes, it is strongly recommended to have a licensed HVAC technician install the unit to ensure proper refrigerant charge, electrical connections, and drainage. Improper installation voids warranty.
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