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

Test Run & Fault Code
Before Test Run
• 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 1MO. Do not operate if it is below 1MO.
• Connect it to the power supply of outdoor units to energize the heating belt of the compressor. To
protect the compressor on startup, power it on for 12 hours prior to the operation. Check if the
installations of the drainpipe and connection line are correct. The drainpipe should be placed lower
while the connection line should be placed lower. Heat preservation measures should be taken
such as wrapping the drainpipe esp. in the indoor units with heat insulating materials.
The drain pipe should be fixed in a slope to avoid protrusions at the upper end and concaving at
the lower end.
Checkup of Installation
check if the mains voltage is correct
check for 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 matching
Ways of Test Run
Do ask the installation personnel to make a test run. Follow 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 initiative a
forced run. This function is not provided with remote control.
• Set the wired controller to refrigerating/heating mode, press "ON/OFF" button for 5 seconds to enter
into the compulsive refrigerating/heating mode. Press again, the "ON/OFF" button to quit the compulsive
running and stop the operation of the air conditioner.
Fault Remedies
When any fault appears, consult the fault code of line control or the flashing time 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
13
14
16
18
20
check if the installation place meets the specifications
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 draining outside properly
check if the indoor units are positioned correctly
Receiver Timer Lamp
(Remote Controller)
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
13 DC motor match (AD*MQERA)
14 fault of indoor unit DC motor
16 DC motor communication (AD*MQERA)
18 BS valve box or 4WV switch failure
20 Corresponding faults of outdoor units
Fault Descriptions
22