Test Run & Fault Code - Carrier XCT7 Installations- Und Benutzerhandbuch

Test Run & Fault Code
Before Test Run
• Before switching on the unit, test the supply terminal tier (L, N terminals) and grounding points with 500V
megaohm meter and check if the resistance is above 1MΩ. The unit cannot be operated if it is below 1MΩ.
• Connect the unit to the power supply of the outdoor units to energize the heating belt of the compressor. To protect
the compressor at start-up, power it on 12 hours prior to the operation.
• Review the test run procedures in the outdoor unit and ensure that the outdoor unit has been properly installed
according to the instructions in the outdoor manual.
Check that all piping has been installed, connected and insulation in accordance with the instructions provided in the
manual.
check if the mains voltage matches
check if there is leakage at the piping joints
check if the connections of mains power and
indoor & outdoor units are correct
check if the serial numbers of the terminals
match
Test run method
Ask the installation personnel to conduct a test run. Conduct 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 undertaken to conduct
compulsive running. This 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 in the compulsive cooling/
heating mode. Press the 'ON/OFF' button again to quit compulsive running and stop the operation of the air conditioner.
Fault Remedies
When any fault appears, consult the fault code of the wired control or the flashing times for LED5 on the indoor unit
board, and find the faults as shown in the following table to troubleshoot.
Indoor unit faults
Failure code at PCB LED5(Indoor Units)/
wired controller Receiver Timer Lamp
(Remote Controller)
01
02
03
04
05
06
07
08
09
12
14
18
20
1 Fault of indoor unit ambient temp. transducer TA
2 Fault of indoor unit pipe temp. transducer TC1
3 Fault of indoor unit pipe temp. transducer TC2
4 Fault of indoor unit dual heat source temp. tranducer
5 Fault of indoor unit EEPROM
6 Fault of communication between indoor & outdoor units
7 Fault of communication between indoor unit and wired control
8 Fault of indoor unit float switch
9 Fault of duplicate indoor unit address
12 Fault of indoor unit 50Hz Zero-crossing
14 Fault of indoor unit DC motor
18 BS valve box or 4WV switch failure
20 Corresponding faults of outdoor units
check if the installation place meets requirements
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 drains outside
check if the indoor units are positioned
Fault Descriptions
22