DC Inverter Multi VRF System User Manual
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9 Maintenance and Care
Regular check, maintenance and care can extend unit’s service life. Please have specialized
person in charge of the management of air conditioners.
9.1 Outdoor Heat Exchanger
Outdoor heat exchanger shall be cleaned regularly, which is at least once every two months. You
can use a dust catcher with nylon brush to clean away the dust on the heat exchanger. If compressed
air source is available, it also can be used to clean the heat exchanger. Do not clean it with water.
9.2 Drain Pipe
Please check regularly whether drain pipe is blocked or not. Make sure condensate can be
drained out smoothly.
9.3 Notice before Seasonal Use
(1) Check whether air inlets and air outlets of indoor and outdoor units are blocked.
(2) Check whether ground connection is reliable or not.
(3) Check whether batteries in the remote controller are replaced or not.
(4)
Check whether air filter is properly installed.
(5) If unit starts up after not operating for a long time, it should be power on 8 hours before
operation starts so as to preheat the outdoor compressor.
(6) Check whether outdoor unit is securely installed. If there is any problem, please contact
C&H
authorized service center.
9.4 Maintenance after Seasonal Use
(1) Disconnect power of the entire system.
(2)
Clean the air filter and outer case of indoor and outdoor units.
(3) Clean away the dust and obstacles on indoor and outdoor units.
(4) If outdoor unit has rust, please apply some paint to it so as to prevent the rust from growing.
9.5 Parts Replacement
Parts and components can be obtained from nearby
C&H
office or
C&H
distributor.
Note:
When you are conducting air tightness test and leakage test, do not mix oxygen, C
2
H
2
or other
dangerous gas into the refrigerant circuit. Otherwise, it may lead to danger. Use nitrogen or refrigerant
to conduct the tests.
10 After-sales Service
If there’s quality defect or other problems in the product, please contact
C&H
local after-sales
service department for help.
Warranty must be based on the following conditions.
(1) Product’s initial startup must be performed by professional technicians from
C&H
service
center or persons assigned by
C&H
.
(2) Only
C&H
spare parts are used.
(3) All instructions of unit operation and maintenance in this manual must be strictly followed
according to set period and set frequency.
(4) Any breach of the above conditions will disable the warranty.
