Sinclair SCV-750EB Service Manual page 94

5.13 P6 Troubleshooting (for SCV-900EB and SCV-1800EB)
Digital display output
Description
Indicates inverter module failure

When a P6 error occurs, a manual system restart is required before the system can resume operation. The cause of a

P6 error should be addressed promptly in order to avoid system damage.
All units stop running.

 Error code is displayed on the main PCB and user interface.
Possible causes
Inverter module protection

DC bus low or high voltage protection

MCE error

Zero speed protection

Phase sequence error

Excessive compressor frequency variation

Actual compressor frequency differs from target frequency

Specific error codes for XP6 inverter module protection
If P6 error code is displayed, please spot check the specific error code through the wired controller.
Specific error code
1
xL0
xL1
xL2
xL4
xL5
xL7
xL8
xL9
Notes:
1. 'x' is a placeholder for the compressor system (compressor and related electrical components), with 1 representing compressor system A and
2 representing compressor system B.
The specific error codes xL0, xL1, xL2 and xL4 can also be obtained from the inverter module LED indicators. If an inverter module
error has occurred, LED2 is continuously on and LED1 flashes.
92
Inverter module protection
DC bus low voltage protection
DC bus high voltage protection
MCE error
Zero speed protection
Phase sequence error
Compressor frequency variation greater than 15Hz within one second protection
Actual compressor frequency differs from target frequency by more than 15Hz protection
Content