Toshiba A90-0132, Service Manual

Page: 142 / 176

142
Trial operation
Service support function
Alarm clear function
1) Clearing of check code on remote controller
This function releases ALL STOP lock status of the outdoor units (whole system) connected with the indoor unit, and
restarts the operation. (
Restarts alarm detection.)
CHECK
button
CHECK
button
Remote controller
RBC – SR2 – PE
Main remote controller
RBC – SR1 – PE
Push “CHECK” button of the remote controller for 3 seconds or more.
(If pushing the button for 10 seconds and more, the check code is also cleared. (For that remote controller only))
2) Clearing the interface PC board of the inverter outdoor unit
It is possible to clear a detected alarm on the PC board of the inverter outdoor unit without resetting the power source, and
enables the start of operation. However, the check code stored on the remote controller is not removed and should be
removed accordingly using the remote controller. (Clearing setting in remote controller by the above item 1) or reset hole.)
Set the switches on interface PC board of the inverter outdoor unit, SW01to
2, SW02 to 16", and SW03 to 1.
Push the push-switch SW04 on interface PC board of the inverter outdoor
unit for 5 seconds or more.
Display on 7 segment LED [B] of interface PC board of the inverter outdoor
unit changes to CL (for 5 seconds).
Also alarms in the indoor and lock alarm
are released. (However, the check code
remains in the remote controller.)
After this, alarms are detected as usual.
18
SW01, 02, 03: Rotary switch
SW04, 05: Push switch
SW08: Dip switch