Toshiba RBC-RD1-PE Owner's Manual

Also see for RBC-RD1-PE: Installation instructions

Contents

6Indoor Model OperationGBRD1 Functionality (cont.) If for example, a large leak should occur, the unit has got a flood alarm built in. If therefrigerant level increases above the 2200ppm level for more than 10 seconds, thenthe system assumes that there is a large leak and a High Level Alarm will be raisedimmediately. The unit will function as described in the previous paragraph, with theexception of the Low Level and High Level LED’s will flash. The system is also protected against sensor failure or accidental break of the remotesensor cable. If the system detects a sensor failure or cable break, then the system willwait for 1 minute. If the fault has not cleared in that time, the Detector Active LED isextinguished and the Low Level Alarm LED is lit. A fault code (B5) will also begenerated and sent to all Toshiba Controllers attached. However if the fault is notremedied within 4 hours the Low Level Alarm LED is extinguished (the fault code willstill be generated). The alarm relay (Shutdown LED will light) will open circuit, whichcan be connected to drive solenoid isolation valves. An operation matrix is shown below, detailing the LED status, and which type of resetis required if an alarm is triggered.Power offPreheatNormaloperationLow leveldelayLow levelalarmHigh leveldelayHigh levelalarmFlood alarmFault0-< 1minFault1 min -< 4hFault > 4hLED’s:Power/Active X (O) O O O O O O O X XLow level X X X (O) O O O (O) X O XHigh Level X X X X X (O) O (O) X X XAlarm (shutdown) X X X X X X O O X X OBuzzer: O O O O O O I I O O OReset Required:Low Level Auto Auto Auto Auto Ext IntHigh Level Ext Ext IntAlarm (Shutdown) Int Int IntX = Off; O = On; ( ) = FlashingK7127 Ref.Detect. O/M 6/3/01 8:36 am Page 6