TCL TCA-18HRA/DVO, Техническое руководство, Страница: 92 / 113

DC Inverter Air
Normally ON: Driver running
6‐ LED Indicator Light
LED704(red) Normally ON: Driver is ON
OFF: Driver is OFF
List of Shutdown Protection Faults
Fault Code Fault Content
1 IPM over current
2 Compressor drive failure protection
3 Compressor over‐current (Peak Value)
4 Reserve
5 Compressor phase current sampling fault
6 IGBT shell over‐heat shutdown
7 Reserve
8 DC bus over‐voltage
9 DC bus under‐voltage
10 AC input under‐voltage
11 AC input over‐current
12 Input voltage sensor sampling fault
13 PFC and DSP communication fault
14 Radiator sensor fault
15 Communication fault of DSP and communication board
16 Communication fault with main control panel
Note: the “number” in fault code refers to the flashing times of LEDD, etc.
List of Alarm Protections
Fault Code Fault Content
1 Compressor over‐current alarm (peak value)
2 Compressor weak magnetic protection alarm
3 IGBT shell over‐heat alarm
4 Reserve
5 AC input over‐current alarm
6 EEPROM Fault alarm
Note: the “number” in fault code refers to the flashing times of LEDD, etc.
3.5 Troubleshooting and Repair
(1) Steps of Fault Repair
A. Collect fault phenomena
B. Judge whether it is a fault or reasonable protection function;
C. Fault identification: determine fault position according to fault display;
D. test the damage condition of failed peripheral elements (sensor, display screen, pressure switch, level switch,
etc.);
E. Replace the damaged parts;
F. Main control panel is damaged or not;
G. Replace the main control panel.
92 / 113