Carrier XCT7 Installations- Und Benutzerhandbuch Seite 49

Failure Code
Digital tube Failure code definition
indication on
master unit
108 Module rectifier side software
transient overcurrent
109 Module rectifier side current
detection circuit anomaly
110 Module hardware
overcurrent
111 Compressor out of step
112 High temperature of module
radiator
113 Module overload
114 Module DC bus DC undervolt-
age
115 Module DC bus DC overvolt-
age
116 Communication error between
module and control board
117 Modular software overcurrent
118 Module boot failure
119 Module current detection con-
nection error
120 Module power supply
121 Module control board
122 Module radiator temperature
sensor abnormal
123 Module rectifier side hardware
transient overcurrent
124 Three phase power supply
failure
125-0/1 Compressor frequency mis-
match
125-4/5 Fan speed mismatch (locked
rotor)
127 MCU reset fault
Failure description
In the process of starting or running, the rotor position
cannot be detected for 6 times in a row, and the INV
control board is automatically restored after stopping for
5seconds
The temperature is more than 94°C and sounds a fault
alarm.
Automatic recovery of INV control board happens when
temperature is 94°C
When the supply voltage is less than DC420V, the
fault alarm goes on. When the voltage is greater than
DC420V, the INV control board is automatically restored
When the supply voltage is greater than DC642V, the
fault alarm goes on. When the voltage is less than
DC642V, the INV control board is automatically restored.
For 30 seconds, the communication signal is not detect-
ed, and the INV control board is recovered immediately
after detection
-
Compressor 5 consecutive start failures
Abnormality of current detection sensor, no connection
or circuit error
Inverter controller power supply instantaneous interrup-
tion error
Inverter controller board power supply instantaneous
interruption power supply abnormal
Temperature sensor resistance is abnormal or not con-
nected
-
-
(the current frequency is greater than or equal to INV or
+3Hz target frequency (frequency) target actual frequen-
cy >O &=O) for 5 minutes
20rpm run below the 30s, or the target value of 70% will
run for 2 minutes after the shutdown, automatic recovery
after 2 minutes and 50 seconds. If it occurs for one hour,
four faults are confirmed.
If the host detects sub machine MCU reset, and the
machine is in operation, the host MCU will reset the fault
and shut the whole system down. If it is in the heating
mode, then it restarts the 4WV power. The system re-
starts 4WV reversing operation. Four faults confirmed if
it occurs for one hour
42
Remarks
-1: compressor
module 1;
-2: compressor
module 2;
-4: fan module 1;
-5: fan module
2; Four faults con-
firmed for one hour,
Once confirmed,
un-resumable
Resumable
Once confirmed,
un-resumable
Once confirmed,
un-resumable