Senville SENA-24HF 24,000 BTU Mini Split Air Conditioner User Manual

Senville SENA-24HF 24,000 BTU Mini Split Air Conditioner

Safety Precautions

It is really important that you read the Safety Precautions before operation and installation. Incorrect installation due to ignoring instructions can cause serious damage or injury. The seriousness of potential harm or injuries is classified as either a WARNING or CAUTION.

WARNING FOR PRODUCT USE

• Turn off the air conditioner and disconnect the power before performing any cleaning, installation, or repair. Failure to do so can cause electric shock.
• If an abnormal situation arises (like a burning smell), immediately turn off the unit and disconnect the power. Call your dealer for instructions to avoid electric shock, fire, or injury.
• Do not insert fingers, rods, or other objects into the air inlet or outlet. This may cause injury, since the fan may be rotating at high speeds.
• Do not use flammable sprays such as hair spray, lacquer, or paint near the unit. This may cause fire or combustion.
• Do not operate the air conditioner in places near or around combustible gases. Emitted gas may collect around the unit and cause an explosion.
• 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.
• Do not expose your body directly to cool air for a prolonged period of time.
• Do not allow children to play with the air conditioner. Children must be supervised around the unit at all times.
• If the air conditioner is used together with burners or other heating devices, thoroughly ventilate the room to avoid oxygen deficiency.
• In certain functional environments, such as kitchens, server rooms, etc., the use of specially designed air-conditioning units is highly recommended.

ELECTRICAL WARNINGS

• Only use the specified wire. If the wire is damaged, it must be replaced by the manufacturer, its service agent, or similarly qualified persons in order to avoid a hazard.
• The product must be properly grounded at the time of installation, or electric shock may occur.
• For all electrical work, follow all local and national wiring standards, regulations, and the Installation Manual.
• Connect cables tightly, and clamp them securely to prevent external forces from damaging the terminal.
• Improper electrical connections can overheat and cause fire, and may also cause shock. All electrical connections must be made according to the Electrical Connection Diagram located on the panels of the indoor and outdoor units.
• All wiring must be properly arranged to ensure that the control board cover can close properly. If the control board cover is not closed properly, it can lead to corrosion and cause the connection points on the terminal to heat up, catch fire, or cause electric shock.
• Disconnection must be incorporated in the fixed wiring in accordance with the wiring rules.
• Do not share the electrical outlet with other appliances. Improper or insufficient power supply can cause fire or electric shock.
• If connecting power to fixed wiring, an all-pole disconnection device that has at least 3 mm clearances in all poles, and has a leakage current that may exceed 10 mA, the residual current device (RCD) having a rated residual operating current not exceeding 30 mA, and disconnection must be incorporated in the fixed wiring in accordance with the wiring rules.

CLEANING AND MAINTENANCE WARNINGS

• Turn off the device and disconnect the power before cleaning. Failure to do so can cause electric shock.
• Do not clean the air conditioner with excessive amounts of water.
• Do not clean the air conditioner with combustible cleaning agents. Combustible cleaning agents can cause fire or deformation.

CAUTION

• Turn off the air conditioner and disconnect the power if you are not going to use it for a long time.
• Turn off and unplug the unit during storms.
• Make sure that water condensation can drain unhindered from the unit.
• Do not operate the air conditioner with wet hands. This may cause an electric shock.
• Do not use the device for any other purpose than its intended use.
• Do not climb onto or place objects on top of the outdoor unit.
• Do not allow the air conditioner to operate for long periods of time with doors or windows open, or if the humidity is very high.

WARNING FOR USING FLAMMABLE REFRIGERANTS

• Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer.
• The appliance shall be stored in a room without continuously operating ignition sources (for example, open flames, an operating gas appliance, or an operating electric heater).
• Do not pierce or burn.
• Be aware that refrigerants may not contain an odour.
• LEAK DETECTION SYSTEM installed. Unit must be powered except for service. When the refrigerant sensor detects refrigerant leakage, the indoor unit will display an error code and emit a buzzing sound, the compressor of the outdoor unit will immediately stop, and the indoor fan will start running. The service life of the refrigerant sensor is 15 years. When the refrigerant sensor malfunctions, the indoor unit will display the error code “FHCC”. The refrigerant sensor cannot be repaired and can only be replaced by the manufacturer. It shall only be replaced with the sensor specified by the manufacturer. (Applicable to the units with refrigerant sensors only).

For R454B refrigerant charge amount and minimum room area:

The machine you purchased may be one of the types in the table below. The indoor and outdoor units are designed to be used together. Please check the machine you purchased. The indoor unit should be installed at least 6.0 ft/1.8 m above the floor, the height of the room cannot be less than 7.3 ft/2.2 m, and the minimum room area for operating or storage should be as specified in the following table.

1. Installation (where refrigerant pipes are allowed)

• Any person who is involved with working on or breaking into a refrigerant circuit should hold a current, valid certificate from an industry-accredited assessment authority, which authorises their competence to handle refrigerants safely in accordance with an industry-recognised assessment specification.
• Maintenance and repair requiring the assistance of other skilled personnel shall be carried out under the supervision of the person competent in the use of flammable refrigerants.
• That the installation of pipe-work shall be kept to a minimum.
• That pipe-work shall be protected from physical damage.
• Where refrigerant pipes shall comply with national gas regulations.
• That mechanical connections shall be accessible for maintenance purposes.
• Be more careful that foreign matter (oil, water, etc.) does not enter the piping. Also, when storing the piping, securely seal the opening by pinching, taping, etc.
• Appliance shall be stored in a well-ventilated area where the room size corresponds to the room area as specified for operation.
• Joints shall be tested with detection equipment with a capability of 5 g/year of refrigerant or better, with the equipment in standstill and under operation or under a pressure of at least these standstill or operation conditions after installation. Detachable joints shall NOT be used in the indoor side of the unit (brazed or welded joints could be used).
• In cases that require mechanical ventilation, ventilation openings shall be kept clear of obstruction.

2. When a FLAMMABLE REFRIGERANT is used, the requirements for installation space of the appliance and/or ventilation requirements are determined according to

• the mass charge amount (M) used in the appliance,
• the installation location,
• the type of ventilation of the location or of the appliance.
• piping material, pipe routing, and installation shall include protection from physical damage in operation and service, and comply with national and local codes and standards, such as ASHRAE 15, IAPMO Uniform Mechanical Code, ICC International Mechanical Code, or CSA B52. All field joints shall be accessible for inspection before being covered or enclosed.
• that protection devices, piping, and fittings shall be protected as far as possible against adverse environmental effects, for example, the danger of water collecting and freezing in relief pipes or the accumulation of dirt and debris;
• that piping in refrigeration systems shall be so designed and installed to minimize the likelihood of hydraulic shock damaging the system;
• that steel pipes and components shall be protected against corrosion with a rustproof coating before applying any insulation;
• that precautions shall be taken to avoid excessive vibration or pulsation;
• the minimum floor area of the room shall be mentioned in the form of a table or a single figure without reference to a formula;
• After completion of field piping for split systems, the field pipework shall be pressure tested with an inert gas and then vacuum tested before refrigerant charging, according to the following requirements:
• The minimum test pressure for the low side of the system shall be the low side design pressure, and the minimum test pressure for the high side of the system shall be the high side design pressure, unless the high side of the system cannot be isolated from the low side of the system, in which case the entire system shall be pressure tested to the low side design pressure.
• The test pressure after removal of the pressure source shall be maintained for at least 1 h with no decrease of pressure indicated by the test gauge, with test gauge resolution not exceeding 5% of the test pressure.
• During the evacuation test, after achieving a vacuum level specified in the manual or less, the refrigeration system shall be isolated from the vacuum pump, and the pressure shall not rise above 1500 microns within 10 min. The vacuum pressure level shall be specified in the manual and shall be the lesser of 500 microns or the value required for compliance with national and local codes and standards, which may vary between residential, commercial, and industrial buildings.
• Field-made refrigerant joints indoors shall be tightness tested according to the following requirements: The test method shall have a sensitivity of 5 grams per year of refrigerant or better under a pressure of at least 0.25 times the maximum allowable pressure. No leak shall be detected.
• Any servicing shall be performed only as recommended by the manufacturer.

3. Qualification of workers

Any maintenance, service, and repair operations must be a required qualification of the working personnel. Every working procedure that affects safety means shall only be carried out by competent persons that joined the training and achieved competence should be documented by a certificate. The training of these procedures is carried out by national training organizations or manufacturers that are accredited to teach the relevant national competency standards that may be set in legislation. 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.

Get to Know Your AC.

NOTE: Different models have different front panels and display windows. Not all the indicators described below are available for the air conditioner you purchased. Please check the indoor display window of the unit you purchased. Illustrations in this manual are for explanatory purposes. The actual shape of your indoor unit may be slightly different. The actual shape shall prevail.

Indoor Unit Display

More Features

Active Clean function

• The Active Clean Technology washes away dust when it adheres to the heat exchanger by automatically freezing and then rapidly thawing the frost. A “pi-pi” sound will be heard. The Active clean operation is used to produce more condensed water to improve the cleaning effect, and the cold air will blow out. After cleaning, the internal wind wheel then keeps operating with hot air to blow-dry the evaporator, thus keeping the inside clean.
• When this function is turned on, the indoor unit display window appears “CL”. After 20 to 45 minutes, the unit will turn off automatically and cancel the Active Clean function.

ECO Intelligent eye (Applicable to units with Intelligent eye function only)

The system is controlled intelligently under Intelligent Eye mode. It can detect people’s activities in the room. In cooling/heating mode, when you are away for 30 minutes, the unit will automatically lower the frequency to save energy. And the unit will automatically start and resume operation if sensing human activity again.

Refrigerant Leakage Detection

• When the system detects a malfunction of the refrigerant, the indoor unit will automatically display the following error codes:
• “EL0C (System lacks refrigerant)”,
• “EHC1 (Refrigerant sensor detects leakage)”,
• “EHC2 (Working condition of the refrigerant sensor is out of range and leakage is detected)”,
• “EHC3 (Working condition of the refrigerant sensor is out of range)”, or
• “ECC1 (Other indoor unit refrigerant sensor detects leakage (Multi-zone))”.
• When an “EHC1” or “EHC2” error occurs, the buzzer will continue to beep for 5 to 6 minutes before stopping. You can also press any button on the remote controller to stop the buzzer.

Note: Error codes of “EHC1”, “EHC2”, “EHC3”, and “ECC1” are only applicable to the units with a refrigerant sensor.

Auto-Restart

If the unit loses power, it will automatically restart with the prior settings once power has been restored.

Louver Angle Memory

When turning on your unit, the louver will automatically resume its former angle.

Breeze Away

This feature avoids direct airflow blowing on the body and makes you feel indulged in silky coolness.

Sleep Operation

• The SLEEP function is used to decrease energy use while you sleep (and don’t need the same temperature settings to stay comfortable).
• Press the SLEEP button on the remote control when in COOL mode, the unit will increase the temperature by 1°C (2°F) after 1 hour, and will increase an additional 1°C (2°F) after another hour.
• When in HEAT mode, the unit will decrease the temperature by 1°C (2°F) after 1 hour, and will decrease an additional 1°C (2°F) after another hour.
• The sleep feature will stop after 8 hours, and the system will keep running with the final situation.

Wireless Control (For App control units)

Wireless control allows you to control your air conditioner using your mobile phone and a wireless connection.
For the USB device access, replacement, and maintenance operations must be carried out by professional staff.

Outdoor Unit Reverse Fan Operation function:

This feature helps keep the outdoor coil cleaner and may extend the duration between regular maintenance intervals depending on local conditions. When the unit is turned off, a 10-second delay occurs, then the outdoor fan runs in reverse rotation for 70 seconds to blow off loose accumulated dust and debris.

Setting Angle of Air Flow

NOTE: Setting the vertical angle of the air flow (Remote control), While the unit is on, use the SWING button on the remote control to set the direction (vertical/horizontal angle) of airflow. Please refer to the Remote Control Manual for details.

NOTE ON LOUVER ANGLES

• Do not set the louver at too vertical an angle for long periods of time when using COOL or DRY mode. It would condense the water on the louver blade, which will drop on your floor or furnishings.
• Setting the louver at too small an angle when using COOL or HEAT mode can reduce the performance of the AC due to restricted air flow.
• According to the relative standards requirement, please set the vertical air flow louver to its maximum angle under heating capacity test.

Manual Operation (without remote)

CAUTION: For product use

The manual button is intended for testing purposes and emergency operation only. Please do not use this function unless the remote control is lost and it is necessary. To restore regular operation, use the remote control to activate the unit. The unit must be turned off before manual operation.

To operate your unit manually:

• Open the front panel of the indoor unit.
• Locate the MANUAL CONTROL button on the right-hand side of the unit.
• Press the MANUAL CONTROL button one time to activate FORCED AUTO mode.
• Press the MANUAL CONTROL button again to activate FORCED COOLING mode.
• Press the MANUAL CONTROL button a third time to turn the unit off.
• Close the front panel.

Care and Maintenance

CAUTION

• The cooling efficiency of your unit and your health would be damaged by the clogged AC. Make sure to clean the filter every two weeks.
• Always TURN OFF your AC system and disconnect its power supply before cleaning or maintenance.
• Do not touch the air freshening (Plasma) filter for at least 10 minutes after turning off the unit.
• Only use a soft, dry cloth to wipe the unit clean. You can use a cloth soaked in warm water to wipe it clean if the unit is especially dirty.
• Do not use chemicals or chemically treated cloths to clean the unit.
• Do not use benzene, paint thinner, polishing powder, or other solvents to clean the unit. They can cause the plastic surface to crack or deform.
• Do not use water hotter than 40°C (104°F) to clean the front panel. This can cause the panel to deform or become discolored.

Cleaning Your Indoor Unit, Air Filter

• Step 1: The air filter is on the top of the air conditioner. Hold both sides of the top filter in the place marked with “PULL”, then pull it upwards.
• Step 2: If your filter has a small air freshening filter, unclip it from the larger filter. Clean this air freshening filter with a hand-held vacuum.
• Step 3: Clean the large air filter with warm, soapy water. Be sure to use a mild detergent. Rinse the filter with fresh water, then shake off excess water. Dry it in a cool, dry place, and refrain from exposing it to direct sunlight.
• Step 4: When dry, re-clip the air freshening filter to the larger filter, then install the air filter back on the top of the indoor unit.

CAUTION –

• Before changing the filter or cleaning, turn off the unit and disconnect its power supply.
• When removing the filter, do not touch metal parts in the unit. The sharp metal edges can cut you.
• Do not use water to clean the inside of the indoor unit. This can destroy insulation and cause electrical shock.
• Do not expose the filter to direct sunlight when drying. This can shrink the filter.
• Any maintenance and cleaning of the outdoor unit should be performed by an authorized dealer or a licensed service provider.
• Any unit repairs should be performed by an authorized dealer or a licensed service provider.

Maintain your AC.

Troubleshooting

CAUTION

If any of the following conditions occur, turn off your unit immediately!

• The wire is damaged or abnormally warm
• You smell a burning odor
• The unit emits loud or abnormal sounds
• A power fuse blows, or the circuit breaker frequently trips
• Water or other objects fall into or out of the unit
• DO NOT ATTEMPT TO FIX THESE YOURSELF! CONTACT AN AUTHORIZED SERVICE PROVIDER IMMEDIATELY.

Common Issues

The following problems are not malfunctions and, in most situations, will not require repairs. Visit senville.com for more information.

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Senville SENA-24HF 24,000 BTU Mini Split Air Conditioner-FAQs