Carrier XCT 7 40VD072H-7S-QEE, Installation And Owner'S Manual

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21
Before Test Run
Ways of Test Run
Fault Remedies
• Before switching it on, test the supply terminal tier (L, N terminals) and grounding points with 500V mega ohm meter
and check if the resistance is above 1MΩ. Unit should not 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.
Checkup of Installation
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 a compulsive
run. This function is not provided for models with remote control.
• Set the 40VCW217FQEE wired controller to cooling/heating mode. Press "ON/OFF" button for 10 seconds to enter into
the compulsive cooling/heating mode. Re-press "ON/OFF" button to quit the compulsive running and stop the operation
of the air conditioner.
When any fault appears, 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. You can identify the faults as shown in the following table to
remove them.
Indoor Unit Faults
Failure code at
wired controller
PCB LED5 (Indoor Units) / Receiver
Timer Lamp (Remote Controller)
Fault Descriptions
01 1 Fault of indoor unit ambient temp. transducer TA
02 2 Fault of indoor unit pipe temp. transducer TC1
03 3 Fault of indoor unit pipe temp. transducer TC2
05 5 Fault of indoor unit EEPROM
06 6 Fault of communication between indoor & outdoor units
07 7 Fault of communication between indoor unit and wired control
08 8 Fault of indoor unit float switch
09 9 Fault of duplicate indoor unit address
12 12 Fault of indoor unit 50Hz Zero-crossing
14 14 Fault of indoor unit DC motor
18 18 BS valve box or 4WV switch failure
20 20 Corresponding faults of outdoor units
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
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
Test Run & Failure Code
Check if the arrangements of the drainpipe and connection line are correct.
The drainpipe is placed at a lower part while the connection line is placed at the upper part. Heat preservation measures
should be taken such as winding the drainpipe especially in the indoor units with heat insulating materials.The drain pipe
should be fixed in a slope to avoid protruding at the upper part and concaving at the lower part on the way.