Pioneer Ceiling Introduction

The Highseer Pioneer Ceiling Cassette Indoor Unit CB048 is an advanced air conditioning solution designed for efficient cooling and heating in residential and commercial spaces. With a sleek, low-profile design, this unit seamlessly integrates into ceilings, providing unobtrusive climate control. The Highseer is priced at approximately $1,199.00. It features a powerful airflow system that ensures even temperature distribution throughout the room, enhancing comfort. Ideal for larger areas, the CB048 combines performance with energy efficiency.

Specifications

Cooling Capacity: 48,000 BTU
SEER Rating: Up to 18 SEER
Indoor Noise Level: As low as 35 dB
Air Flow: Up to 1,200 CFM
Refrigerant: R-410A
Dimensions: 37.4" x 37.4" x 11.8"
Weight: Approximately 55 lbs
Advanced Air Filtration System
Remote Control and Wi-Fi Compatibility

Safety Precautions

Thank you for purchasing this air conditioner. This manual will provide you with information on how to operate, maintain, and troubleshoot your air conditioner. Following the instructions will ensure the proper function and extended lifespan of your unit.
Please pay attention to the following signs:

WARNING: Failure to observe a warning may result in death. The appliance must be installed in accor.dance with national regulations.

CAUTION: Failure to observe a caution may result in injury or equipment damage.

WARNING

Ask an authorized dealer to install this air conditioner. Inappropriate installation may cause water leakage, electric shock, or ﬁre.
The warranty will be voided if the unit is not installed by professionals.
If abnormal situation arises (like burning smell), turn off the power supply and call your dealer for instructions to avoid electric shock, ﬁre or injury.
DO NOT let the indoor unit or the remote control get wet. It may cause electric shock or ﬁre.
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 a ﬂammable spray such as hair spray, lacquer or paint near the unit. This may cause ﬁre or combustion.

CAUTION

DO NOT touch the air outlet while the swing ﬂap is in motion. Fingers might get caught or the unit may break down.
DO NOT inspect the unit by yourself. Ask an authorized dealer to perform the inspection.
To prevent product deterioration, do not use the air conditioner for preservation purposes (storage of food, plants, animals, works of art, etc.).
DO NOT touch the evaporator coils inside the indoor unit. The evaporator coils are sharp and may cause injury.
DO NOT operate the air conditioner with wet hands. It may cause electric shock.
DO NOT place items that might be affected by moisture damage under the indoor unit. Condensation can occur at a relative humidity of 80%.
DO NOT expose heat-producing appliances to cold air or place them under the indoor unit. This may cause incomplete combustion or deformation of the unit due to the heat.
After long periods of usage, check the indoor unit to see if anything is damaged. If the indoor unit is damaged, it may fall and cause injury.
If the air conditioner is used together with other heating devices, thoroughly ventilate the room to avoid oxygen deﬁciency.
DO NOT climb onto or place objects on top of the outdoor unit.
DO NOT operate the air conditioner when using fumigant insecticides. The chemicals may become layered with the unit and endanger those who are hypersensitive to chemicals.
DO NOT let children play with the air conditioner.
The air conditioner can be used by children aged 8 years and older and people with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, if they have been given instruction on how to properly and safely operate the system.
DO NOT operate the air conditioner in a wet room (e.g. bathroom or laundry room). This can cause electrical shock and cause the product to deteriorate.

Indoor Unit Parts And Major Functions

Unit Parts

Operating Conditions

Use the system at the following temperature for safe and effective operation. If the air conditioner is used outside of the following conditions, it may malfunction or be less efﬁcient.

	COOL Mode	HEAT mode	DRY mode
Indoor Temperature	17-32°C (62-90°F)	0-30°C (32-86°F)	17-32°C (62-90°F)
	0-50°C
	(32-122°F)
Outdoor Temperature	-15-50°C (5-122°F)	-15-24°C (5-76°F)	0-50°C (32-122°F)
	(low temperature
	cooling models)

Features

Default Setting
When the air conditioner restarts after a power failure, it will default to the factory settings (AUTO mode, AUTO fan, 24°C (76°F)). This may cause inconsistencies on the remote control and unit panel. Use your remote control to update the status.

Auto-Restart (some models)
In case of power failure, the system will immediately stop. When power returns, the Operation light on the indoor unit will ﬂash. To restart the unit, press the ON/OFF button on the remote control. If the system has an auto restart function, the unit will restart using the same settings.

Louver Angle Memory Function (Optional)
Some models are designed with a louver angle memory function. When the unit restarts after a power failure, the angle of the horizontal louvers will automatically return to the previous position. The angle of the horizontal louver should not be set too small as condensation may form and drip into the machine. To reset the louver, press the manual button, which will reset the horizontal louver settings.

Refrigerant Leak Detection System (some models)
In the event of a refrigerant leak, the LCD screen will display “EC” and the LED indicator light will ﬂash.

Energy Saving Tips

DO NOT set the unit to excessive temperature levels.
While cooling, close the curtains to avoid direct sunlight.
Doors and windows should be kept closed to keep cool or warm air in the room.
DO NOT place objects near the air inlet and outlet of the unit. This will reduce the efﬁciency of the unit.
Set a timer and use the built-in SLEEP/ECONOMY mode if applicable.
If you don’t plan to use the unit for a long time, remove the batteries from the remote control.
Clean the air ﬁlter every two weeks. A dirty ﬁlter can reduce cooling or heating efﬁciency.
Adjust louvers properly and avoid direct airﬂow.

Description

The Highseer Pioneer Ceiling Cassette Indoor Unit CB048 boasts a sleek and compact design, making it ideal for modern interiors. The unit features a four-way air discharge system, ensuring even air distribution across the room. It is powered by an inverter technology that optimizes energy consumption while maintaining consistent cooling performance.

The CB048 also comes with a range of features such as auto-restart, sleep mode, and a turbo mode for quick cooling. The advanced air filtration system includes multiple layers to capture dust, pollen, and other contaminants, providing clean and healthy air.

Manual Operations

This display panel on the indoor unit can be used to operate the unit in case the remote control has been misplaced or is out of batteries.

MANUAL button: This button selects the mode in the following order: AUTO, FORCED COOL, OFF.
FORCED COOL mode: In FORCED COOL mode, the Operation light ﬂashes. The system will then turn to AUTO after it has cooled with a high wind speed for 30 minutes. The remote control will be disabled during this operation.
OFF mode: When the panel is turned OFF, the unit turns off and the remote control is re-enabled.

Setup Guide

To set up the Highseer Pioneer Ceiling Cassette Indoor Unit CB048,

Start by ensuring the ceiling can support the weight of the unit.
Follow the manufacturer's instructions for mounting the cassette onto the ceiling grid.
Connect the refrigerant lines and electrical connections carefully, and ensure all seals are tight to prevent leaks.
Once installed, configure the unit using the remote control or the Highseer app if Wi-Fi is enabled.
Set your desired temperature and mode, and adjust fan speed as needed.
Regular maintenance includes cleaning the air filters and checking for any leaks or issues with the refrigerant lines.

Care And Maintenance

Safety Precautions

Contact an authorized service technician for repair or maintenance of this unit. Improper repair and maintenance may cause water leakage, electrical shock, or ﬁre, and may void your warranty.
DO NOT substitute a blown fuse with a higher or lower amperage rating fuse, as this may cause circuit damage or an electrical ﬁre.
Please make sure the drain hose is set up according to the instructions. Failure to do so could cause leakage and result in personal property damage, ﬁre and electric shock.
Make sure that all wires are connected properly. Failure to connect wires according to instructions can result in electrical shock or ﬁre.

Unit Maintenance

BEFORE CLEANING OR MAINTENANCE

Always turn off your air conditioning system and disconnect its power supply before cleaning or maintenance.
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 wash the unit under running water. Doing so causes electrical danger.
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.
Clean the unit using a damp, lint-free cloth and neutral detergent. Dry the unit with a dry, lint-free cloth.

How To Clean The Air Filter

The ﬁlter prevents dust and other particles from entering the indoor unit. Dust buildup can reduce the efﬁciency of the air conditioner. For optimum efﬁciency, clean the air ﬁlter every two weeks or more frequently if you live in a dusty area. Replace the ﬁlter with a new one if it’s heavily clogged and unable to be cleaned.

WARNING: DO NOT REMOVE OR CLEAN THE FILTER BY YOURSELF

Removing and cleaning the ﬁlter can be dangerous. Removal and maintenance must be performed by a certiﬁed technician.

NOTE: In households with animals, you will have to periodically wipe down the grille to prevent blocked airﬂow due to animal hair.

Unlock the grille by pushing the two tabs towards the middle simultaneously.
Unplug the display panel cable from the control box on the main body.
Detach the grille from the main unit by holding the grille at a 45° angle, lifting it up slightly, and then pulling the grille forward.
NOTE: Some models include an auto-lifting panel function, which allows the grill to move vertically and simplifies the filter cleaning process.
Remove the air filter.
Clean the air filter by vacuuming the surface or washing it in warm water with mild detergent.
1. If using a vacuum cleaner, the inlet side should face the vacuum.
2. If using water, the inlet side should face down and away from the water stream.
Rinse the filter with clean water and allow it to air-dry. DO NOT let the filter dry in direct sunlight.
Reinstall the filter.
Reinstall the front grille and reconnect the display panel cable to the control box on the main body.

Repairing Refrigerant Leaks

WARNING

If the refrigerant leaks, turn off the air conditioner and any combustible heating devices, ventilate the room and call your dealer immediately. Refrigerant is both toxic and ﬂammable. DO NOT use the air conditioner until the leak is repaired.
When the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant concentration from exceeding the safety limit in the event of refrigerant leakage. Concentrated refrigerant causes a severe health and safety threat.

Refrigerant Leak Detection System (some models)

In the event of a refrigerant leak, the LCD screen will display “EC” and the LED indicator light will ﬂash.

Preparation For Periods Of Non-Use

Maintenance after Extended Non-Use

Remove any obstacles blocking the vents of both the indoor and outdoor units.
Clean the air filter and the front grille of the indoor unit. Reinstall the clean, dry air filter in its original position.
Turn on the main power switch at least 12 hours prior to operating the unit.

Storing the Unit While Not In Use

Run the appliance on FAN mode for 12 hours in a warm room to dry it and prevent mold.
Turn off the appliance and unplug it.
Clean the air filter according to the instructions in the previous section. Reinstall the clean, dry filter before storing.
Remove the batteries from the remote control.

Troubleshooting

CAUTIONS

If one of the following conditions occurs, switch off the power supply immediately and contact your dealer for further assistance.

The operation light continues to ﬂash rapidly after the unit has been restarted.
The remote control buttons do not work.
The unit continually trips fuses or circuit breakers.
A foreign object or water enters the air conditioner.
The indoor unit leaks.

Common Problems

The following symptoms are not a malfunction and in most situations will not require repairs.

Problem Possible Causes
Unit does not turn on when pressing ON/ OFF button	The unit has a 3-minute protection feature that prevents the unit from overloading. The unit cannotbe restarted withinthree minutes of being turned off.
	Cooling and Heating Models: If the Operation light and PRE-DEF (Pre-heating/ Defrost) indicators are litup, the outdoor temperature is toocold and theunit’s anti-cold windis activated in order to defrost theunit.
	InCooling-only Models: If the “FanOnly” indicator is lit up,the outdoor temperature is too cold and the unit’s anti-freeze protection is activated in order to defrost the unit.
The unit changes from COOL mode to FAN mode	The unit changes its setting to prevent frost from forming on the unit. Once the temperature increases, the unit will start operating again.
The unit changes from COOL mode to FAN mode	The set temperature hasbeen reached, at which pointthe unit turnsoff the compressor. The unit will resume operating when the temperature ﬂuctuates again.
The indoor unit emits white mist	In humid regions, a large temperature difference between the room’s air and the conditioned air can cause white mist.
Both the indoor and outdoor units emit white mist	When the unitrestarts in HEATmode after defrosting, white mist maybe emitted due to moisture generated from the defrosting process.
The indoor unit makes noises	A squeaking sound is heardwhen the systemis OFF or in COOL mode. The noise is also heardwhen the drainpump (optional) is in operation.
The indoor unit makes noises	A squeaking sound may occur after running the unit in HEAT mode due to expansion and contraction of the unit’s plastic parts.
Both the indoor unit and outdoor unit make noises	A low hissing sound may occurduring operation. Thisis normal andis caused by refrigerant gas ﬂowing through both the indoorand outdoor units.
Both the indoor unit and outdoor unit make noises	A low hissing sound may be heard whenthe system starts, has just stopped running or is defrosting. This noise is normal andis caused by the refrigerant gas stopping or changing direction.
The outdoor unit makes noises	Theunit will make different soundsbased on its current operating mode.

Dust is emitted from either the indoor or outdoor unit	The unit may accumulate dust during extended periods of non-use, which will be emittedwhen the unit is turnedon. This can be mitigated by covering the unit during long periods of inactivity.
The unit emits a bad odor	The unit may absorb odors from the environment (such as furniture, cooking, cigarettes, etc.) which will be emitted during operations.
The unit emits a bad odor	The unit’s ﬁlters have become moldy and should be cleaned.
The fan of the outdoor unit does not operate	During operation, the fan speed is controlled to optimize productoperation.

Troubleshooting Tips

When troubles occur, please check the following points before contacting a repair company.

Problem	Possible Causes	Solution
The unit is not working	Power failure	Wait for the power to be restored
	The powerswitch is off	Turn on the power
	The fuse is burned out	Replace the fuse
	Remote control batteries aredead	Replace the remote controlbatteries
	The unit’s3-minute protection has been activated	Wait three minutes afterrestarting the unit
Poor cooling performance	Temperature setting maybe higher than the ambientroom temperature	Lower the temperature setting
	The heat exchanger on the indoor or outdoor unit is dirty	Clean the affected heat exchanger
	The air ﬁlter is dirty	Remove the ﬁlter and clean it according to instructions
	The air inletor outlet of either unit is blocked	Turn the unitoff, remove theobstruction and turn it back on
	Doors and windows are open	Make sure that all doors and windows are closed while operating the unit
	Excessive heat is generated by sunlight	Close windows and curtains during periods of high heator bright sunshine
	Low refrigerant due to leak or long-termuse	Check forleaks, re-seal if necessary and top off refrigerant
The unit starts and stops frequently	There’s too much or too little refrigerant in the system	Check for leaks and recharge the system with refrigerant
	There is air,incompressible gas or foreign material in the refrigeration system.	Evacuate and recharge the system with refrigerant
	System circuit is blocked	Determine which circuit is blocked and replace the malfunctioning pieceof equipment
	The compressor is broken	Replace the compressor
	Thevoltage is too high or too low	Install a manostat to regulate the voltage
Poor heating performance	The outdoor temperature is lower than 7°C (44.5°F)	Check for leaks and recharge the system with refrigerant
	Cold airis entering through doors and windows	Make sure that all doors and windows are closed during use
	Low refrigerant due to leak or long-termuse	Check forleaks, re-seal if necessary and top off refrigerant

Error Codes

Highseer Pioneer Ceiling Cassette Indoor Unit CB048 Pros & Cons

Pros

High Cooling Capacity: Effective for large spaces
Energy Efficiency: High SEER rating reduces energy costs
Quiet Operation: Low noise levels make it suitable for any environment
Advanced Filtration: Ensures clean and healthy air circulation
Wi-Fi Compatibility: Easy control via the Highseer app

Cons

High Initial Cost: More expensive than some other models
Complex Installation: Requires professional installation for optimal performance
Large Size: May not fit in smaller ceilings or tight spaces
Filter Maintenance: Regular filter cleaning is necessary to maintain efficiency

Customer Reviews

Customers praise the Highseer Pioneer Ceiling Cassette Indoor Unit CB048 for its powerful cooling performance and quiet operation. Many have noted the ease of use of the remote control and app, as well as the benefits of the advanced air filtration system. However, some have mentioned that the installation process can be complex and requires professional help.

Common complaints

Include the high initial cost and the need for regular filter maintenance. Despite these, the overall satisfaction rate is high due to its reliable performance and energy efficiency.

Number Cause
1	Indoor EEPROM (Electrically Erasable Programmable Read-Only Memory) error	1	Off	E0
2	Indoor and outdoor unit communication malfunction	2	Off	E 1
3	Indoor fan speed malfunction	4	Off	E3
4	Indoor room temperature sensorerror	5	Off	E4
5	Evaporator coil temperature sensorerror	6	Off	E5
6	Refrigerant leak detection systemmalfunction	7	Off	EC
7	Water level alarm malfunction	8	Off	EE
8	Dual indoor unit(twin model only) communication malfunction	9	Off	E8
9	Other twin model malfunction	10	Off	E9
10	Overload protection	1	On	F0
11	Outdoor temperature sensor error	2	On	F 1
12	Outdoor condenser pipe sensorerror	3	On	F2
13	Discharge air temperature sensorerror	4	On	F3
14	Outdoor EEPROM (Electrically Erasable Programmable Read-Only Memory) error	5	On	F4
15	Outdoor fan speed (DC fan motoronly) malfunction	6	On	F5
16	T2bsensor error	7	On	F6
17	Auto-lifting panelcommunication error	8	On	F7
18	Auto-lifting panelmalfunction	9	On	F8
19	Auto-lifting panelis open	10	On	F9
20	Inverter module IPM protection	1	Flash	P0
21	High/Low voltage protection	2	Flash	P 1
22	Compressor top overheating protection	3	Flash	P2
23	Outdoor low temperature protection	4	Flash	P3
24	Compressor drive error	5	Flash	P4
25	Mode conﬂict	6	Flash	P5
26	Compressor low-pressure protection	7	Flash	P6
27	Outdoor IGBTsensor error	8	Flash	P7

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