Test Run & Fault Code - Carrier XCT7 40VD005-024L-7E-QEE Installation And Owner's Manual

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.
instructions provided in the 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.
Fault Remedies
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 and find out
the faults as shown in the following table to remove all faults.
Indoor Unit Faults
Failure code at PCB LED5(Indoor Units)/
wired controller
01
02
03
04
05
06
07
08
09
12
14
18
20
Receiver Timer Lamp
(Remote Controller)
1
2
3
4
5
6
7
8
9
12
14
18
20
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
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. tranducer
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 float switch
Fault of duplicate indoor unit address
Fault of indoor unit 50Hz Zero-crossing
Fault of indoor unit DC motor
BS valve box or 4WV switch failure
Corresponding faults of outdoor units
20