mars B-VMH18 Air Handler Air Conditioners Owner’s Manual
- June 13, 2024
- MARS
Table of Contents
mars B-VMH18 Air Handler Air Conditioners
IMPORTANT NOTE
- Read this manual carefully before installing or operating your new air conditioning unit. Make sure to save this manual for future reference.
- Please check the applicable models, technical data, F-GAS(if any) and manufacturer information from the “Owner’s Manual – Product Fiche ” in the packaging of the outdoor unit.
Read This Manual
- Inside you’ll find many helpful hints on how to use and maintain your air conditioner properly.
- Just a little preventive care on your part can save you a great deal of time and money over the life of your air conditioner.
- These instructions may not cover every possible condition of use, so common sense and attention to safety is required when installing, operating and maintaining this product.
SAFETY PRECAUTION
- To prevent injury to the user or other people and property damage, the instructions shown here must be followed. Incorrect operation due to ignoring of instructions may cause harm or damage.
- The level of risk is shown by the following indications.
WARNING
- This symbol indicates the possibility of personnel injury or loss of life.
CAUTION
- This symbol indicates the possibility of property damage or serious consequences.
NOTICE
- This symbol addresses practices not related to physical injury.
WARNINGS FOR PRODUCT USE
- 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 and carbon monoxide build-up.
- In certain environments, such as kitchens, server rooms, etc., the use of specially designed air-conditioning units is highly recommended.
- Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and service must be performed by a licensed professional HVAC installer or equivalent, service agency, or the gas supplier.
WARNING FOR
CLEANING AND MAINTENANCE
- Turn off the device and disconnect the power before cleaning. Failure to do so can cause electrical 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 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.
- As with any mechanical equipment, contact with sharp sheet metal edges can result in personal injury. Take care while handling this equipment and wear gloves and protective clothing.
ELECTRICAL WARNINGS
- Only use the specified power cord. If the power cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
- Keep the power plug clean. Remove any dust or grime that accumulates on or around the plug. Dirty plugs can cause fire or electric shock.
- Do not pull the power cord to unplug the unit. Hold the plug firmly and pull it from the outlet. Pulling directly on the cord can damage it, which can lead to fire or electric shock.
- Do not modify the length of the power supply cord or use an extension cord to power the unit.
- Do not share the electrical outlet with other appliances. Improper or insufficient power supply can cause fire or electrical shock.
- The product must be properly grounded at the time of installation, or electrical 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 electrical shock.
- If connecting power to fixed wiring, an all-pole disconnection device that has at least 3mm clearances in all poles, and has a leakage current that may exceed 10mA, the residual current device (RCD) having a rated residual operating current not exceeding 30mA, and disconnection must be incorporated in the fixed wiring in accordance with the wiring rules.
WARNINGS FOR PRODUCT INSTALLATION
- Installation must be performed by an authorized dealer or specialist. Defective installation can cause water leakage, electrical shock, or fire.
- Installation must be performed according to the installation instructions. Improper installation can cause water leakage, electrical shock, or fire. (In North America, installation must be performed in accordance with the requirement of NEC and CEC by authorized personnel only.)
- Contact an authorized service technician for repair or maintenance of this unit. This appliance shall be installed in accordance with national wiring regulations.
- Only use the included accessories, parts, and specified parts for installation. Using non-standard parts can cause water leakage, electrical shock, and fire, and can cause the unit to fail.
- Install the unit in a firm location that can support the unit’s weight. If the chosen location cannot support the unit’s weight, or the installation is not done properly, the unit may drop and cause serious injury and damage.
- Install drainage piping according to the instructions in this manual. Improper drainage may cause water damage to your home and property.
- For units that have an auxiliary electric heater, do not install the unit within 1 meter (3 feet) 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 fire.
- Do not turn on the power until all work has been completed.
- When moving or relocating the air conditioner, consult experienced service technicians for disconnection and reinstallation of the unit.
- How to install the appliance to its support, please read the information for details in the “indoor unit installation” and “outdoor unit installation” sections.
- Excessive Weight Hazard – Use two or more people when moving and installing the unit. Failure to do so can result in back or other type of injury.
NOTE ABOUT FLUORINATED GASSES (NOT APPLICABLE TO THE UNIT USING R290 REFRIGERANT)
- This air-conditioning unit contains fluorinated greenhouse gases. For specific information on the type of gas and the amount, please refer to the relevant label on the unit itself or the “Owner’s Manual – Product Fiche ” in the packaging of the outdoor unit. (European Union products only).
- installation, service, maintenance and repair of this unit must be performed by a certified technician.
- Product uninstallation and recycling must be performed by a certified technician.
- For equipment that contains fluorinated greenhouse gases in quantities of 5 tonnes of CO2 equivalent or more, but of less than 50 tonnes of CO2 equivalent, If the system has a leak detection system installed, it must be checked for leaks at least every 24 months.
- When the unit is checked for leaks, proper record-keeping of all checks is strongly recommended.
NOTICE
The allowed static pressure range of the air conditioner on site is 0-0.80 in- H2O (0-200 Pa).
- MODEL: 18-24K
- PRESSURE: 0.10 in-H2O (25Pa)
INDOOR UNIT PARTS AND MAJOR FUNCTIONS
Unit Parts
Operating Conditions
Use the system under the following temperatures for safe and effective
operation. If the air conditioner is used under different conditions, it may
malfunction or become less efficient.
Inverter Split Type
| COOL mode| HEAT mode| DRY mode
---|---|---|---
Room Temperature
| 16°C – 32°C (60°F – 90°F)| 0°C – 30°C (32°F – 86°F)| 10°C – 32°C (50°F – 90°F)
Outdoor Temperature
| 0°C – 50°C (32°F – 122°F)| ****
-15°C – 24°C (5°F – 75°F)
| ****
0°C – 50°C (32°F – 122°F)
-15°C – 50°C (5°F – 122°F)
(For models with low temp. cooling systems.)
0°C – 52°C (32°F – 126°F)
(For special tropical models)
| 0°C – 52°C (32°F – 126°F)
(For special tropical models)
FOR OUTDOOR UNITS WITH AUXILIARY ELECTRIC HEATER
When outside te temperature is below 0°C(32°F ), we strongly recommend keeping
the outdoor unit powered at all times to prevent damage to equipment.
Fixed-speed Type
| COOL mode| HEAT mode| DRY mode
---|---|---|---
Room Temperature| 16°C-32°C (60°F-90°F)| 0°C-30°C
(32°F-86°F)
| 10°C-32°C (50°F-90°F)
Outdoor Temperature
| 18°C-43°C (64°F-109°F)| ****
-7°C-24°C (19°F-75°F)
| 11°C-43°C (52°F-109°F)
-7°C-43°C (19°F-109°F)
(For models with low-temp cooling systems)
| 18°C-43°C (64°F-109°F)
18°C-52°C (64°F-126°F)
(For special tropical models)
| 18°C-52°C (64°F-126°F)
(For special tropical models)
NOTICE
Room relative humidity less than 80%. If the air conditioner operates in
excess of this figure, the surface of the air conditioner may attract
condensation.
TO FURTHER OPTIMIZE THE PERFORMANCE OF YOUR UNIT, DO THE FOLLOWING
- Keep doors and windows closed.
- Limit energy usage by using the TIMER ON and TIMER OFF functions.
- Do not block air inlets or outlets.
- Regularly inspect and clean air filters.
Features
Refrigerant Leak Detection System (some models)
- In the event of a refrigerant leak, the LCD screen will display “EL0C” and the LED indicator light will flash.
- The default temperature of the first power-on is set to 16 degrees for refrigeration and 30 degrees for heating. When the temperature stops, the temperature is set at the room temperature at that time.
NOTICE
- Under normal working conditions, the switch, wind speed and temperature can not be adjusted by remote control.
- Requirements of wire controller: Control AXU function for live heating.
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.
- Replace the air every 30 to 90 days depending on thickness and MERV.
CARE AND MAINTENANCE
Cleaning Your Indoor Unit
BEFORE CLEANING OR MAINTENANCE
Always turn off your air conditioner system and disconnect its power supply before cleaning or maintenance.
- Contact an authorized service technician for repair or maintenance. 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 re. The replacement Fuse must be identical to the one removed.
- 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 re.
CAUTION
- Only use a soft, dry cloth to wipe the unit clean. If the unit is especially dirty, you can use a cloth soaked in warm water to wipe it clean.
- 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. Use of volatile cleaners may cause re, resulting in injury or death.
- Do not use water hotter than 40°C (104°F) to clean the front panel. This can cause the panel to deform or become discoloured.
- DO NOT wash the unit under running water. Doing so creates an electrical hazard.
- Clean the unit using a damp, lint-free cloth and neutral detergent. Dry the unit with a dry, lint-free cloth.
NOTICE
Replace the air after every 30 to 90 days depending on MERV rating.
CAUTION
- Before changing the filter or cleaning, turn off the unit and disconnect its power supply.
- When removing water, 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 latter.
- 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.
Maintenance – Long Periods of Non-Use
If you plan not to use your air conditioner for an extended period of time, do
the following:
Maintenance – Pre-Season Inspection
After long periods of non-use, or before periods of frequent use, do the
following:
TROUBLESHOOTING
SAFETY PRECAUTIONS
If any of the following conditions occur, turn off your unit immediately!
- You smell a burning odour
- 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 a malfunction and in most situations will not
require repairs.
| Issue | Possible Causes |
|---|
The unit does not turn on when pressing the ON/OFF button
| The Unit has a 3-minute protection feature that prevents the unit from
overloading. The unit cannot be restarted within three minutes of being turned
off.
Cooling and Heating Models: If the Operation light and PRE-DEF (Pre-heating/
Defrost) indicators are lit up, the outdoor temperature is too cold and the
unit’s anti-cold wind is activated in order to defrost the unit.
In Cooling-only Models: If the “Fan Only” 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/HEAT mode to FAN mode
| The unit may change its setting to prevent frost from forming on the unit.
Once the temperature increases, the unit will start operating in the
previously selected mode again.
The set temperature has been reached, at which point the unit turns off the
compressor. The unit will continue operating when the temperature fluctuates
again.
The indoor unit emits a 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 unit
restarts in HEAT mode after defrosting, a white mist may be emitted due to
moisture generated from the defrosting process.
The indoor unit makes noises
| A squeaking sound is heard when the system is OFF or in COOL mode. The
noise is also heard when the drain pump (optional) is in operation.
A squeaking sound may occur after running the unit in HEAT mode due to the
expansion and contraction of the unit’s plastic parts.
Both the indoor unit and outdoor unit make noises
| Low hissing sound during operation: This is normal and is caused by
refrigerant gas flowing through both indoor and outdoor units.
Low hissing sound when the system starts, has just stopped running, or is
defrosting: This noise is normal and is caused by the refrigerant gas stopping
or changing direction.
Squeaking sound: Normal expansion and contraction of plastic and metal parts
caused by temperature changes during operation can cause squeaking noises.
Issue| Possible Causes
---|---
The outdoor unit makes noises| The unit will make different sounds based
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 emitted when
the unit is turned on. This can be mitigated by covering the unit during long
periods of inactivity.
The unit emits a bad odor
| The unit may absorb odours from the environment (such as furniture,
cooking, cigarettes, etc.) which will be emitted during operations.
The unit’s filters have become mouldy and should be cleaned.
The fan of the outdoor unit does not operate| During operation, the fan
speed is controlled to optimize product operation.
NOTICE
- If the problem persists, contact a local dealer. Provide them with a detailed description of the unit malfunction as well as your model number.
Troubleshooting
When troubles occur, please check the following points before contacting a
repair company.
| Problem | Possible Causes | Solution |
|---|
Poor Cooling Performance
| The temperature setting may be higher than the ambient room 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 the instructions
The air inlet or outlet of either unit is blocked| Turn the unit off, remove
the obstruction 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 heat or bright sunshine
Too many sources of heat in the room (people, computers, electronics, etc.)|
Reduce the amount of heat sources
Low refrigerant due to leak or long-term use| Check for leaks, re-seal if
necessary and top off refrigerant
Problem| Possible Causes| Solution
---|---|---
The unit is not working
| Power failure| Wait for the power to be restored
The power is turned off| Turn on the power
The fuse is burned out| Replace the fuse
The Unit’s 3-minute protection has been activated| Wait three minutes after
restarting the unit
Timer is activated| Turn timer off
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.
Incompressible gas or moisture has entered the system.| Evacuate and recharge
the system with refrigerant
The system circuit is blocked
| Determine which circuit is blocked and replace the malfunctioning piece of
equipment
The compressor is broken| Replace the compressor
The voltage is too high or too low| Install a manostat to regulate the voltage
Poor heating performance
| The outdoor temperature is extremely low| Use the auxiliary heating device
Cold air is entering through doors and windows| Make sure that all doors and
windows are closed during use
Low refrigerant due to leak or long-term use| Check for leaks, re-seal if
necessary and top off refrigerant
LIMITED EXPRESS WARRANTY
Congratulations on purchasing your new HVAC equipment. It’s been designed for
long life and reliable service, and is backed by one of the strongest
warranties in the industry. Your unit automatically qualifies for the warranty
coverage listed below, providing you keep your proof of purchase (receipt) for
the equipment and meet the warranty conditions.
LIMITED TEN (10) YEAR EXPRESS WARRANTY
MARS warrants all parts including the compressor of the VMH-SV Series Ductless
Mini-Split to be free from defects in workmanship and materials for normal use
and maintenance for ten (10) years from the date of purchase by the original
consumer for the original installation. This Express Limited Warranty applies
only when the Ductless Mini-Split is installed as a complete matched system:
outdoor unit and indoor unit, and only when the system is installed per MARS
installation instructions and in accordance with all local, state and national
codes for normal use.
EXCEPTIONS
The Limited Express Warranty does not cover normal maintenance—MARS recommends
that regular inspection/maintenance be performed at least once a season and
proof of maintenance be kept. Additionally, labor charges, transportation
charges for replacement parts, replacement of refrigerant or filters, any
other service calls/repairs are not covered by this Limited Warranty. It also
does not cover any portion or component of the system that is not supplied by
MARS, regardless of the cause of failure of such portion or component.
CONDITIONS FOR WARRANTY COVERAGE
- Unit must be operated according to MARS operating instructions included with the unit and cannot have been subjected to accident, alteration, improper repair, neglect or misuse, or an act of God (such as a flood)
- Installation was done by a trained, licensed or otherwise qualified HVAC dealer/contractor
- Performance cannot be impaired by use of any product not authorized by MARS, or by any adjustments or adaptations to components
- Serial numbers and/or rating plate have not been altered or removed
- Damage has not been a result of inadequate wiring or voltage conditions, use during brown-out conditions, or circuit interruptions
- Air flow around any section of the unit has not been restricted
- Unit remains in the original installation
- Unit was not purchased over the internet
DURATION OF WARRANTY & REGISTRATION
The warranty begins on the date of purchase by the original consumer. The
consumer must retain a receipted bill of sale as proof of warranty period.
Without this proof, the express warranty begins on the date of shipment from
the factory.
REMEDY PROVIDED BY THE LIMITED EXPRESS WARRANTY
The sole remedy under the Limited Warranty is replacement of the defective
part. If replacement parts are required within the period of this warranty,
MARS replacement parts shall be used; any warranty on the replacement part(s)
shall not affect the applicable original unit warranty. Ready access to the
unit for service is the owner’s responsibility. Labor to diagnose and replace
the defective part is not covered by this Limited Express Warranty. If for any
reason the replacement part/product is no longer available during the warranty
period, MARS shall have the right to allow a credit in the amount of the
current suggested retail price of the part/product instead of providing repair
or replacement.
LIMITATION OF LIABILITY
- There are no other express or implied warranties. MARS makes no warranty of merchantability. We do not warrant that the unit is suitable for any particular purpose or can be used in buildings or rooms of any particular size or condition except as specifically provided in this document. There are no other warranties, express or implied, which extend beyond the description in this document.
- All warranties implied by law are limited in duration to the sevenyear term of the parts warranty. Your exclusive remedy is limited to the replacement of defective parts. We will not be liable for any consequential or incidental damages caused by any defect in this unit.
- This warranty gives you specific legal rights and you may also have other rights which vary from state to state. Some states do not allow limitation on how long an implied warranty lasts or do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations or exclusions may not apply to you.
- No warranties are made for units sold outside the continental United States and Canada. Your distributor or final seller may provide a warranty on units sold outside these areas.
- MARS will not be liable for damages if our performance regarding warranty resolution is delayed by events beyond our control including accident, alteration, abuse, war, government restrictions, strikes, fire, flood, or other acts of God.
HOW TO OBTAIN WARRANTY SERVICE OR PARTS
- If you have a warranty claim, notify your installer promptly. If the installer does not remedy your claim, write to MARS, 1900 Wellworth Ave., Jackson MI 49203. Enclose a report of inspection by your installer or service person.
- Include model number, serial number, and date of purchase.
- Owner responsibilities are set forth in the instruction manual—read it carefully.
KEEP THIS INFORMATION AS A RECORD OF YOUR PURCHASE
- Outdoor Unit: Model No. Serial No.
- Indoor Unit 1: Model No. Serial No.
- Indoor Unit 2: Model No. Serial No.
- Indoor Unit 3: Model No. Serial No.
- Indoor Unit 4: Model No. Serial No.
- Indoor Unit 5: Model No. Serial No.
- Date of Purchase__
Please visit www.marsdelivers.com. to register your new product.
- subjecto change and poutin minor nice or incating ongains. Deming the application and suitability for use of any product is the responsibility of the installer. Additionally, the installer is responsible for verifying dimensional data on the actual product prior to beginning any installation preparations.
- Incentive and rebate programs have precise requirements as to product performance and certification. All products meet applicable regulations in effect on date of manufacture; however, certifications are not necessarily granted for the life of a product.
- Therefore, it is the responsibility of the applicant to determine whether a specific model qualifies for these incentive/rebate programs.
CONTACT
- 1900 Wellworth Ave., Jackson, Ml 49203
- Ph. 517-787-2100
- www.marsdelivers.com.
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