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OWNER'S MANUAL
SLIM DUCTED INDOOR UNIT
DRADL0612F2A, DRADL18F2A
DRADH0912F2A, DRADH18F2A, DRADH24F2A
R-454B, 208/230V, 1ph 60HZ
Model Number:
Serial Number:
Purchase Date:
Installing Contractor Company Name:
TIP
Capture relevant information about your Durastar mini-split equipment before it is in-
stalled and write it above for future reference.
R
DURASTAR.COM
1
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Summary of Contents for DURASTAR DRADL0612F2A
- Page 1 DRADL0612F2A, DRADL18F2A DRADH0912F2A, DRADH18F2A, DRADH24F2A R-454B, 208/230V, 1ph 60HZ Model Number: Serial Number: Purchase Date: Installing Contractor Company Name: Capture relevant information about your Durastar mini-split equipment before it is in- stalled and write it above for future reference. DURASTAR.COM...
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Page 2: Table Of Contents
IMPORTANT SAFETY PRECAUTIONS ................. 4 INCLUDED ACCESSORIES ....................15 OPERATING TEMPERATURES ..................16 PARTS IDENTIFICATION .....................17 WIRED THERMOSTAT ......................17 LED DISPLAY INDICATORS....................18 MANUAL OPERATION (USE WITHOUT THERMOSTAT) ........18 CARE AND MAINTENANCE ....................19 TROUBLESHOOTING ......................20 LIMITED WARRANTY - PARTS..................24 DURASTAR.COM... -
Page 3: Introduction
• Read the troubleshooting section of this manual as it will help you diagnose and solve common issues. • Visit us on the web at www.Durastar.Com to download product guides and up-to-date information. • If you need warranty service, our friendly customer service representatives are available via email at questions@durastar.Com or by telephone at 1-888-320-0706. -
Page 4: Important Safety Precautions
Do not operate your air conditioner in a wet room such as a bathroom or laundry room. Too much exposure to water can cause electrical components to short circuit. • If the air conditioner is used together with burners or other heating devices, thoroughly ventilate the room to avoid oxygen deficiency. DURASTAR.COM... -
Page 5: Electrical Safety
For units that have an auxiliary electric heater, do not install the unit within 3 feet (1 meter) of any combustible materials. • Do not install the unit in a location that may be exposed to combustible gas leaks. If combustible gas accumulates around the unit, it may cause a fire. DURASTAR.COM... - Page 6 When the refrigerant sensor malfunctions, the indoor unit will display the error code “FHCC”. The refrigerant sensor can not be repaired and can only be replaced by the manufacturer. It shall only be replaced with the sensor specified by the manufacturer. DURASTAR.COM...
- Page 7 All training shall follow the ANNEX HH requirements of UL 60335-2-40 4th Edition. Examples for such working procedures are: • breaking into the refrigerating circuit; • opening of sealed components; • opening of ventilated enclosures. DURASTAR.COM...
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Page 8: Work Procedure
Where electrical components are being changed, they shall be fit for the purpose and to the correct specification. At all times the manufacturer’s maintenance and service guidelines shall be followed. If in doubt consult the manufacturer’s technical department for assistance. The following checks shall be applied to installations using FLAMMABLE REFRIGERANTS: DURASTAR.COM... - Page 9 (25 % maximum) is confirmed. • Leak detection fluids are also suitable for use with most refrigerants but the use of detergents containing chlorine shall be avoided as the chlorine may react with the refrigerant and corrode the copper pipe-work. DURASTAR.COM...
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Page 10: Charging Procedures
Prior to recharging the system it shall be pressure tested with OXYGEN FREE NITROGEN • (OFN). The system shall be leak tested on completion of charging but prior to commissioning. • A follow up leak test shall be carried out prior to leaving the site. DURASTAR.COM... - Page 11 If in doubt, the manufacturer should be consulted. In addition, a set of calibrated weighing scales shall be available and in good working order. Hoses shall be complete with leak-free disconnect couplings and in good condition. DURASTAR.COM...
- Page 12 The effectiveness of signs should not be diminished by too many signs being placed together. Any pictograms used should be as simple as possible and contain only essential details. Disposal of equipment using flammable refrigerants: See national regulations. DURASTAR.COM...
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Page 13: Additional Precautions
Composition: R-454B is classified as safety group A2L per ASHRAE Standard 34. Verify that service equipment and instruments are certified for use with group A2L refrigerants, and in particular with R-454B is a non-azeotropic mixture of 68.9% by weight difluorometh ane (HFC- 32) and 31.1 % by weight 2,3,3,3-tetrafluoro-1-propene (HFO-1234yf). DURASTAR.COM... - Page 14 : the actual refrigerant charge in the system in lbs (kg) : the refrigerant releasable charge in lbs (kg) WARNING: The minimum room area or the minimum room area of conditioned space is based on releasable charge and total system refrigerant charge. DURASTAR.COM...
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Page 15: Included Accessories
When the unit detects a refrigerant leak, the minimum airflow of the indoor unit is as follows : Low Static Models Model DRADL0612F2A DRADL0612F2A DRADL0612F2A DRADL18F2A Nominal 294 CFM 294 CFM 353 CFM 588 CFM Air Volume (500 m³/h) (500 m³/h) (600 m³/h) -
Page 16: Operating Temperatures
Regularly inspect and clean air filters. NOTE Your Durastar air conditioner's outdoor unit is equipped with a base pan heater, allowing it to continue to operate at freezing temperatures as low as -22°F (-30°C). When outdoor air temperatures are at or below 32°F (0°C), we strongly recommend keeping the unit plugged in at all times to ensure smooth ongoing performance. -
Page 17: Parts Identification
Other IDU refrigerant sensor detects leakage (Multi-zone) EH C1 Refrigerant sensor detects leakage EH C2 Refrigerant sensor is out of range and leakage is detected EH C3 Refrigerant sensor is out of range EL 0C System lacks refrigerant FH CC Refrigerant sensor error DURASTAR.COM... -
Page 18: Led Display Indicators
2. Press the MANUAL button one time to activate FORCED AUTO mode. 3. Press the MANUAL button again to activate FORCED COOLING mode. 4. Press the MANUAL button a third time to turn the unit off. Display Manual Panel Button DURASTAR.COM... -
Page 19: Care And Maintenance
• Do not use water to clean the inside of the indoor unit. This can destroy insulation and cause electrical shock. • Do not expose filter to direct sunlight when drying. This can shrink the filter. DURASTAR.COM... -
Page 20: Troubleshooting
Both the indoor and When the unit restarts in HEAT mode after defrosting, white mist may outdoor units emit be emitted due to moisture generated during the defrosting process. white mist DURASTAR.COM... - Page 21 • Press ON/OFF button on the thermostat to restart operation. NOTE If problem persists, contact a local dealer or your nearest customer service center. Provide them with a detailed description of the unit malfunction as well as your model number. DURASTAR.COM...
- Page 22 The unit may stop operation or continue to run safely. If the indicator lamps lamps continue to flash or error codes appear, wait for about 10 minutes. The problem continue may resolve itself. flashing or If the problem persists, contact your nearest service technician. error code appears DURASTAR.COM...
- Page 23 Wait three minutes after restarting the been activated unit Timer is activated Turn timer off NOTE If your problem persists after performing the checks and diagnostics above, or the error code remains, turn off your unit immediately and contact an authorized service center. DURASTAR.COM...
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Page 24: Limited Warranty - Parts
Covered Equipment Parts are warranted to be free from defects in material and workmanship for a period of seven (7) years from the date of installation, under normal use and service. Durastar will, at its option, repair or replace any part determined by Durastar to be defective. Replacement parts carry the balance of the original parts warranty. - Page 25 These items will be required to complete any warranty service. A Durastar authorized representative will verify warranty eligibility and determine appropriate service options. Service will be provided during normal business hours.
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- Page 28 THIS PAGE INTENTIONALLY LEFT BLANK. ©2025 Durastar DURASTAR.COM V1.1 0125...
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