System Operation When The Leak Detector Detects A Refrigerant Leak - Toshiba MCY-MUG0401HSW-E Service Manual

9-9. System operation when the Leak Detector detects
a refrigerant leak.
When Leak Detector detects a refrigerant leak, the indoor unit connected the Leak Detector issues
[J30] notification.
When a refrigerant leak is detected, the alarm LED flashes and the buzzer rings.
The alarm can be stopped by pushing the alarm lamp button for at least 2 seconds, after buzzer sounds 1 minute.
When Leak Detector connected to an indoor unit whose DN code No.[107] is set to "1: Pump down operation"
detects a refrigerant leak, all Shut-off Valve units will be closed and the system will be locked.
[J30] will be displayed on the 7-segment display of the interface P.C. board of the outdoor unit.
When Leak Detector connected to an indoor unit whose DN code No.[107] is set to "3: Leak Detector Only"
detects a refrigerant leak, the system will be locked.
However, if there is even one indoor unit whose DN code No.[107] is set to "1: Pump down operation",
all Shut-off Valve units will be closed and the system will be locked.
[J30] will be displayed on the 7-segment display of the interface P.C. board of the outdoor unit.
When Leak Detector connected to an indoor unit whose DN code No.[107] is set to "2: Individual shut-off" detects
a refrigerant leak, Shut-off Valve unit of the corresponding indoor unit will be closed and only the corresponding
indoor unit will be prevented from operating.
[J30] will not be displayed on the 7-segment display of the interface P.C. board of the outdoor unit.
Please refer to "9-5.Diagnosis procedure for each check code" for more explanation of the leak detection.
223