Master and slave chiller have the same CCN address (CCN.A)ĭual chiller routine disabled. Master and slave chiller with same address
Wiring error, faulty wiring, failed master chiller MBB module, power loss at Master chiller. Slave chiller MBB loses communication with master chiller MBBĭual chiller control disabled. Loss of Communication with master chiller Wiring error, faulty wiring, failed Slave chiller MBB module, power loss at slave chiller, wrong slave address. Master chiller MBB loses communication with slave chiller MBBĭual chiller control disabled. Wiring error, faulty pump contactor (welded contacts) If configured for cooler pump control and flow switch input is closed for 5 minutes while pump output(s) are off
For models with dual pumps, the second pump will be started if availableĬooler pump failure, faulty flow switch or interlock.Ĭooler Pump Interlock Closed When Pump is Off For models with dual pumps, the second pump will be started if availableĬooler Flow/Interlock Contacts Opened During Normal Operationįlow switch opens for at least 3 seconds after being initially closedĪll compressors shut down. Cooler Flow/Interlock Contacts failed to Close at start-upĬooler flow switch contacts failed to close within 1 minute (if cooler pump control is enabled) or within 5 minutes (if cooler pump control is not enabled) after start-upĬhiller not allowed to start.
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