Sinclair SCV-1400EB, Service Manual

Page: 94 / 160

92
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 Content
xL0 Inverter module protection
xL1 DC bus low voltage protection
xL2 DC bus high voltage protection
xL4 MCE error
xL5 Zero speed protection
xL7 Phase sequence error
xL8 Compressor frequency variation greater than 15Hz within one second protection
xL9 Actual compressor frequency differs from target frequency by more than 15Hz protection
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.