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Owner’s Manual -  

B-VMH09,12,18,24DU-1 

 

  

 

9

1. If the unit you purchased is a rear ventilated

one, take off the filter in the directions

indicated by the arrows in the following

diagram.

Fig. 4.1

Safety Precautions

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 fire.

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 the 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 creates an electrical hazard.

 

 

DO NOT 

use water hotter than 40°C (104°F)

to clean the front panel. This can cause the

panel to become deformed or 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 cannot 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 animal hair blocking airflow.

  

Care And Maintenance

4

Summary of Contents for Comfort-Aire Century B-VMH09DU-1

Page 1: ...OWNER S MANUAL Ducted Unit Models B VMH09DU 1 B VMH12DU 1 B VMH18DU 1 B VMH24DU 1 517 787 2100 www marsdelivers com...

Page 2: ...Owner s Manual B VMH09 12 18 24DU 1 2 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 3: ...Owner s Manual B VMH09 12 18 24DU 1 3 Indoor Unit Parts and Major Functions 6 Manual Operations 8 Table of Contents Owner s Manual SAFETY FIRST Safety Precautions 5 1 2 3...

Page 4: ...Maintenance 9 a Unit Maintenance 9 b How to Clean the Air Filter 9 c Repairing Refrigerant Leaks 10 d Preparation for Periods of Non use 10 Troubleshooting 11 a Common Problems 11 b Troubleshooting Ti...

Page 5: ...iance must be installed by installers or contractors who are licensed HVAC professionals and in compliance with all local state and provincial laws Failure to observe a caution may result in injury or...

Page 6: ...fixed wiring according to the national rule If the supply cord is damaged it must be replaced by the manufacturer its service agent or similarly qualified persons in order to avoid a hazard The applia...

Page 7: ...he room DO NOT place objects near the air inlet and outlet 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 ba...

Page 8: ...der 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...

Page 9: ...se 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...

Page 10: ...EC and the LED indicator light will flash Preparation For Periods Of Non Use Maintenance after Extended Non Use 1 Remove any obstacles blocking the vents of both the indoor and outdoor units 2 Clean t...

Page 11: ...hanges its setting to prevent frost from forming on the unit Once the temperature increases the unit will start operating again The set temperature has been reached at which point the unit turns off t...

Page 12: ...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 inlet or outlet of either unit is bloc...

Page 13: ...n 10 Off 10 Overload protection 1 On F0 11 Outdoor temperature sensor error 2 On F 1 12 Outdoor condenser pipe sensor error 3 On F2 13 Discharge air temperature sensor error 4 On F3 14 Outdoor EEPROM...

Page 14: ...When disposing of this appliance you have the following options Dispose of the appliance at designated municipal electronic waste collection facility When buying a new appliance the retailer will take...

Page 15: ...f of warranty period Without this proof the express warranty begins on the date of shipment from the factory Please visit www marsdelivers com to register your new product REMEDY PROVIDED BY THE LIMIT...

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