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Ducted air
conditioning unit
stops shortly after
start-up
Heating is not
sufficient
Cooling is not
sufficient
Note: Check the previous items, please contact the nearest service center of FISHER and depict the
air conditioner model and its symptom if the problem cannot be solved.
12 CARE AND MAINTENANCE
To ptimize the life of the air-conditioning unit, check and maintain the unit regularly with
specialized person.
1)Air filter Air filter is made by washable nylon, if you want to clean it, you can put it on a harder
plate, then tap it gently to move bigger particles. If necessary, you can wash it in water with mild
detergent, then dry it naturally.
2)Outdoor heat exchanger Outdoor heat exchanger must be cleaned regularly, at least once every
two months. You can clean the surface with vacuum cleaner or nylon brush, please do not wash it with
water.
3)Belt The indoor units are driven by belt, you should check the tightness of the belt after operating
for a period of time.
4)Drainage pipe Check the drainage pipe regularly so as to confirm the fluency flow of condensate.
5)Running cautions of machine as operating season coming
◆ Check if air intake and outlet port is blocked.
◆ Check if the earth connection of the machine is reliable.
◆ Check if the air filter is installed properly.
◆ After a long period of stop, we should switch on the power supply for 8 hours to preheat the
crankcase of compressor before operating the machine.
6)Maintenance at the end of operating seasons
1.Air outlet port or intake port of
indoor unit or outdoor unit is blocked
2.The abnormity of control system
3.The operation of pressure switch
4.Indoor room temperature is lower
than 18
5.Tube sensor does not connect
properly
6.Tube sensor is broken
1. Air filter is blocked
2. Air outlet port or intake port of
indoor unit or outdoor unit is blocked
3. Doors or windows are open
4. Refrigerant leakage
5. The outdoor temperature is lower
than –5
6. Abnormal operation of the control
system
1. Air filter is dirty
2. Air outlet port or intake port of
indoor unit or outdoor unit is blocked
3. Too many persons or a heat source
in the room
4. Doors or windows are open
5. Too high temperature setting
6. Refrigerant leakage
7. Poor performance of room sensor
1. Move the obstacles
2. Contact the service center of FISHER
3. Contact the service center of FISHER
4. Check if it's necessary to operate the
air conditioner
5. Connect it properly
6. Contact the service center of FISHER
1. Clean air filter
2. Move the obstacles
3. Close windows and doors
4. Contact the service center of FISHER
5.The performance of the unit is affected
6. Contact the service center of FISHER
1. Clean air filter
2. Move the obstacles
3. If possible, clear heat sources
4. Close windows and doors
5. Lower set temp.
6. Contact the service center of FISHER
7. Change room sensor
38
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