Rooftop Packaged
22
Note:
After carrying out the check of the above items and taking relevant measures to solve the
problems found but the air-conditioning unit still does not function well, please stop the operation of
the unit immediately and contact the nearest service center. Only ask professional serviceman to
check and repair the unit.
8.Error Code Meaning
Error code
Malfunction
Error code
Malfunction
E1
High Pressure Protection
F2
Condenser Temperature Sensor Error
E3
Low Pressure Protection
F3
Ambient Temperature Sensor Error
E4
High Discharge Temperature
Protection
F4
Discharge Temperature Sensor Error
Remarks:
If E1 and E3 shows by turns, it means overload protection.
9.Maintenance
To protract the life of the air-conditioning unit, check and maintain the unit regularly with
specialized person.
(1) Cleaning the Air Filter
①
Do not disassemble the air filter when cleaning it. Otherwise failure may be caused.
②
If the air-conditioning unit is used in an environment with much dust, you should clean the
air filter frequently (once every two weeks).
(2) Cleaning the 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(only above 5 ton ).
(4) Maintenance at the Beginning of Operating Season
①
Check the air inlet and outlet of the units to confirm there is no blockage.
②
Check to see if the grounding wire is in good condition.
③
Check to see if the line connection is in good condition.
④
Check the drainage pipe so as to confirm the fluency flow of condensate.
(5) Maintenance at the End of the Operational Season
①
When the weather is clear, operate the unit for half a day, so as to dry the inside of the unit.
②
If not to use the air-conditioning unit for a long time, please disconnect the power supply.
Caution:
You shall pay attention to the following matters when cleaning the air-conditioning unit.
(1) Cut off all power supply before contacting the line connecting equipment.
(2) Only clean the air-conditioning unit after the unit is shut off and the power supply is
disconnected. Otherwise electrical shock or injury may be caused.
(3) Do not use water to clean the air-conditioning unit. Otherwise there may be electrical shock.
(4) Pay more attention to the place that the air conditioner should be installed firm.
