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17.9.3 Test Run
■ Before switching it on, test the supply terminal tier (L, N terminals) and grounding points with 500V megaohm
meter and check if the resistance is above 1MΩ. It can't be operated if it is below 1MΩ.
■ Connect it to the power supply of outdoor units to energize the heating belt of the compressor. To protect the
compressor at startup, power it on 12 hours prior to the operation.
Check if the arrangements of the drainpipe and connection line are correct.
The drainpipe shall be placed at the lower part while the connection line placed at the upper part.
Heat preservation measures should be taken such as winding the drainpipe esp. in the indoor units with heating
insulating materials.
The drain pipe should be made a slope type to avoid protruding at the upper part and concaving at the lower part
on the way.
Checkup of Installation Check if the installation place meets the requirement
Check if the mains voltage is matching Check if there is too much noise
Check if there is air leakage at the piping joints Check if the connecting line is fastened
Check if the connections of mains power Check if the connectors for tubing are heat insulated
and indoor & outdoor units are correct Check if the water is drained to the outside
Check if the serial numbers of terminals are Matching Check if the indoor units are positioned
Before Test Run
Ways of Test Run
Do ask the installation personnel to make a test run. Take the testing procedures according to the manual and
check if the temperature regulator works properly.
When the machine fails to start due to the room temperature, the following procedures can be taken to do the
compulsive running. The function is not provided for the type with remote control.
■ Set the wired controller to cooling/heating mode, press "ON/OFF" button for 5 seconds to enter into the
compulsive cooling/heating mode. Repress "ON/OFF" button to quit the compulsive running and stop the
operation of the air conditioner.
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