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Test Run & Fault Code
Before 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 1M*. It canít be operated if it is below 1M*.
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 mains voltage is matching
check if there is air leakage at the piping joints
check if the connections of mains power and
indoor & outdoor units are correct
check if the serial numbers of terminals are
matching
Ways of Test Run
Do ask the installation personnel to make a test run. Take he 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 refrigerating/heating mode, press ìON/OFFî button for 5 seconds to enter
into the compulsive refrigerating/heating mode. Repress ìON/OFFî button to quit the compulsive
running and stop the operation of the air conditioner.
Fault Remedies
When any fault appears, refer to ìInquiry of fault records of indoor unitsî at the previous page, consult the
fault code of line control or the flashing times for LED5 of computer panel of indoor units/health lamp of
receiving window of remote control and find out the faults as shown in the following table to remove all faults.
Indoor Unit Faults
Wired
Controller
Fault Code
01
02
03
04
05
06
07
08
09
0A
Outdoor Unit Code
PCB LED5(Indoor Units)/
Receiving Window Health Lamp
(Remote Controller)
1
2
3
4
5
6
7
8
9
10
20
check if the installation place meets the requirement
check if there is too much noise
check if the connecting line is fastened
check if the connectors for tubing are heat insulated
check if the water is drained to the outside
check if the indoor units are positioned
Fault Descriptions
Fault of indoor unit ambient temp. transducer TA
Fault of indoor unit pipe temp. transducer TC1
Fault of indoor unit pipe temp. transducer
TC2
Fault of indoor unit dual heat source temp.
transducer
Fault of indoor unit EEPROM
Fault of communication between indoor & outdoor units
Fault of communication between indoor unit
and wired control
Fault of indoor unit water drainage
Fault of duplicate indoor unit address
Fault of duplicate central control address
Corresponding faults of outdoor units
32
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