Solaris Manual 8-091.pdf - Categories On Thermal Solutions ...

Trouble Shooting Guide (continued)LCD DisplayAlarm MessageRemote Input FailComm FailureLow Inlet TempMemory FailureRecommendedActionCheck Wiring andRemote SystemCheck Wiring andRemote SystemConfirm each boiler hasa unique addressCheck wiring andsensorCheck return watertemperature. Considersystem or operationalchanges to avoid lowtemperature eventsCall Factory Resetall memories inSystem menu:Clr BIT HistoryClr Alarm HistClr Run Time CntClr Cycle CntFactory Defaults(Factory LevelPassword is required)ExplanationRemote Control Input FailThe Remote Control Input is configured and is not connected or is above or belowa valid range. When the remote control input fails the following control modechanges are taken automatically:Selected ModesResulting Control ModeRemote ModOutlet Sensor and Local SetpointRemote Mod & Remote SensorRemote Sensor and Local SetpointRemote SPOutlet Sensor and Local SetpointRemote SP & Remote SensorRemote Sensor and Local SetpointCommunication FailureThe Modbus or Peer-To-Peer network has failed. When the Modbus network failsthe following control mode changes are taken automatically:Selected ModesResulting Control ModeModbus ModOutlet Sensor and Local SetpointModbus Mod & Remote SensorRemote Sensor and Local SetpointModbus SPOutlet Sensor and Local SetpointModbus SP & Remote SensorRemote Sensor and Local SetpointAfter a Modus communication failure, the ‘Comm Failure’ alarm is not cleareduntil communication is restored and successfully writes to both the Remote On/ Off Modbus Command (00004) and Remote Firing Rate or Remote Setpoint(40006) points have been completed, power is cycled or the protocol parameter ischanged to Peer-To-Peer and then back to Modbus.When a Peer-To-Peer network has failed the boilers begin operation as standalone boilers using the selected parameters.After a Peer-To-Peer communication failure the ‘Comm Failure’ alarm is notcleared until communication is restored and the boiler rejoins a network with atleast one other boiler, power is cycled or the protocol parameter is changed toModbus and then back to Peer-To-Peer.Low Boiler Inlet TemperatureIf the boiler inlet temperature is below the low boiler inlet temperature setpoint,the “Low Inlet Temp” Message is displayed and the boiler inlet temperaturehistory is stored. See following page for additional information on low boiler inlettemperature history storage and retrieval.Memory FailureNew software has been installed in the SBC or a power interruption has causeda memory failure. The Call For Heat will be prevented until the condition iscleared.51