Messages - UMass Amherst

Not Ready messagesMessagesValve not readyThe GC remains not ready until the detector with the failure is turned off. Turningoff the FID or FPD turns off the igniter, hydrogen flow, and air flow. Turning offthe NPD turns off bead voltage, hydrogen flow, and air flow. Turning off the TCDturns off filament voltage and reference flow.F NPD bead slewingB NPD bead slewingThe NPD bead voltage is adjusting to a new setpoint.Valve not ready24V pneu valve driveThis Not Ready state means that the 24 V supply to the pneumatics valves isactually less than 16.5 V. All valves are disabled to prevent improper operation.When full voltage is restored, the GC becomes ready.This Not Ready state could indicate a hardware problem.Gas sampling valve 1Gas sampling valve 2The GC is not ready because the inject time or load time has not elapsed. Itbecomes ready when the specified load or inject time has passed.Multiposition valveThe multiposition valve is causing the GC to be in a not ready state for one ofthe following reasons: The multiposition valve is not at the setpoint position. The GC remains notready until the valve reaches the setpoint.The BCD cable is missing or not plugged into the receptacle. If the cable ismissing, the valve will never become ready.The BCD setpoint is incorrect for the valve BCD output polarity. The valvewill most likely shutdown with Illegal Position or Not Switching shutdownerrors.If the valve is plugged or the sample is viscous, the switching time may betoo short for the valve to switch. Increase the switching time.251Return to Contents

Not Ready messagesMessagesOther not ready messagesOther not ready messagesDiagnostics modeThe GC is not ready when it is in diagnostics mode. The instrument is indiagnostics mode whenever a Diagnostics control table has been accessedthrough the [Options] key.Exit the Diagnostics section of the keyboard for the GC to become ready.External deviceAn instrument that is part of the start/stop bus is not ready. For example, theautomatic liquid sampler is not ready to begin injecting. The GC becomes readywhen the other instruments on the bus are ready.Host systemThe GC is not ready if the integrator, Agilent ChemStation, or other controller isnot ready to begin a run. It becomes ready when the host does.Front inlet purgingBack inlet purgingThis applies only if you have a split/splitless inlet. The message appears if youtry to start a run while the inlet purge valve is still in the split mode.The inlet remains not ready and purging continues until you press the [Prep Run]key. Pressing [Prep Run] closes the valve (it also turns off the gas saver modeand increases pressure for a pressure pulse, if selected).252Return to Contents

Not Ready messagesMessagesPower on in progressThis message appears when: Power is restored after a power failure during a run or while the oven wasturned on and the GC was not performing a run. Power is turned on again after a user turned it off while the oven was turnedon.The GC heats all the other thermal zones and then heats the oven. When theoven temperature reaches the setpoint for equilibration time, the GC becomesready.If the power failure occurred during a run, upon power restoration the GC heatsall the thermal zones and the oven and automatically performs a blank run. Whenthe blank run is completed, the GC becomes ready.253Return to Contents

Shutdown messagesMessagesShutdown messagesWhen the GC encounters a Shutdown condition, a popup message appears onthe display. The popup message is numbered and briefly explains the problem.This chapter provides more thorough information about the problems that causethe GC or a component of the GC to shut down.Table 25 Shutdown MessagesShutdown no.Popup messageComments1Oven shut offSee page 255.2Oven cryo shutdownSee page 255.3Front inlet pressure shutdownSee page 256.4Front inlet flow shutdownSee page 256.5Back inlet pressure shutdownSee page 256.6Back inlet flow shutdownSee page 256.7Front detector fuel gas shutdownSee page 256.8Front detector air/ref shutdownSee page 256.9Front detector makeup shutdownSee page 256.10Back detector fuel gas shutdownSee page 256.11Back detector air/ref shutdownSee page 257.12Back detector makeup shutdownSee page 257.13Pres aux 3 shutdownSee page 257.14Pres aux 4 shutdownSee page 257.15Pres aux 5 shutdownSee page 257.16Multiposition valve is not switchingSee page 257.17Can’t reach setpoint of multipos valveSee page 257.18Front inlet cryo shutdownSee page 258.19Back inlet cryo shutdownSee page 258.20Aux 1 cryo shutdownSee page 258.21Aux 2 cryo shutdownSee page 258.22Front inlet heating too slowly: temperature shut offSee page 259.23Back inlet heating too slowly: temperature shut offSee page 259.254Return to Contents

Shutdown messagesMessagesShutdown 1—Oven shut offThe power required to keep the oven at setpoint exceeds the expected powerfor that temperature. The GC becomes not ready. The oven flaps open half-way(if they are operating correctly). Turn the GC off and then on again or changethe oven temperature to restore operation. Possible causes include: Malfunctioning oven flap. Check the oven flap on the back of the GC. Itshould be open when cooling (for temperatures between 50 and 250 C) orclosed completely to reach temperature setpoints. If the flap is stuckcompletely or partially open, it is not operating correctly. Contact yourAgilent service representative.Look for thermal leaks in the oven (for example, missing insulation aroundan inlet or detector location or a leak in the door).Check for excessive load in the oven (for example, a very large packedcolumn).The oven heater or the heater electronics are not operating correctly.Contact your Agilent service representative.Shutdown 2—Oven cryo shutdownThe GC oven has shut down. Cryogenic shutdowns conserve liquid coolant whenthe GC is unable to start a run. A cryo shutdown does not mean that the cryogeniccooling system is malfunctioning. Instead, one of the following could be thecause: A “cryo timeout” has occurred. This happens if the GC oven has reached itstemperature setpoint but the amount of time you specified for the cryotimeout setpoint has elapsed without a run beginning.Turn the oven off and then on again or change the setpoint to restore normaloperation. Then turn the timeout option off to prevent another shutdown orlengthen the timeout period. A “cryo fault” has occurred. Cryogenic cooling has been on for over16 minutes but the oven has not reached its temperature setpoint.Check the level of the cryogenic fluid and replace the supply if it is too lowfor proper cooling. The cryo valve may be stuck open or closed. If your fluidsupply is adequate, the valve may be broken or the electronics driving it maybe malfunctioning (this is a less likely cause). Contact your Agilent servicerepresentative.255Return to Contents

Shutdown messagesMessagesShutdown 3—Front inlet pressure shutdownThe front inlet failed to reach its setpoint in the allotted time. The time varieswith the type of inlet; it is 2 minutes for purged packed and cool on-column inletsand 5.5 minutes for the split/splitless inlet. The GC is not ready until the problemis corrected and the inlet reaches the setpoint.Shutdown 4—Front inlet flow shutdownThe front inlet failed to reach its flow setpoint in the allotted time. In flow-controlmode, the inlet has 2 minutes to reach the setpoint before shutdown. The GC isnot ready until the problem is corrected and the inlet reaches the flow setpoint.Shutdown 5—Back inlet pressure shutdownThe back inlet can not reach or maintain the pressure setpoint. See Shutdown 3.Shutdown 6—Back inlet flow shutdownThe back inlet can not reach or maintain the flow setpoint. See Shutdown 4.Shutdown 7—Front detector fuel gas shutdownThe front detector fuel gas is unable to reach or maintain the pressure setpointin the allotted 2 minutes. The GC is not ready until the problem is corrected andthe detector reaches the setpoint.Shutdown 8—Front detector air/ref shutdownThe front detector air or reference gas is unable to reach or maintain the pressuresetpoint. All the detector gases are shut off and the GC is not ready. SeeShutdown 7.Shutdown 9—Front detector makeup shutdownThe front detector makeup gas is unable to reach or maintain the pressuresetpoint. All the detector gases are shut off and the GC is not ready. SeeShutdown 7.Shutdown 10—Back detector fuel gas shutdownThe back detector fuel gas is unable to reach or maintain the pressure setpoint.All the detector gases are shut off and the GC is not ready. See Shutdown 7.256Return to Contents

Shutdown messagesMessagesShutdown 11—Back detector air/ref shutdownThe back detector air or reference gas is unable to reach or maintain the pressuresetpoint. All the detector gases are shut off and the GC is not ready. SeeShutdown 7.Shutdown 12—Back detector makeup shutdownThe back detector makeup gas is unable to reach or maintain the pressuresetpoint. All the detector gases are shut off and the GC is not ready. SeeShutdown 7.Shutdown 13—Pres aux 3 shutdownThe pneumatics aux 3 module can not maintain the pressure setpoint. All thedetector gases are shut off and the GC is not ready. See Shutdown 3.Shutdown 14—Pres aux 4 shutdownThe aux 4 module can not maintain the pressure setpoint. See Shutdown 3.Shutdown 15—Pres aux 5 shutdownThe aux 5 module can not maintain the pressure setpoint. See Shutdown 3.Shutdown 16—Multiposition valve is not switchingThe multiposition valve has tried to switch twice without success. The valveshuts down and reports that it is not ready (not at setpoint). Clear the shutdownby entering a new setpoint. Possible causes include: The valve is not connected to the correct valve driver or is not connected atall. Connect the valve to the correct valve driver.The valve is stuck.The switching time is too short for the speed of the valve. The valve couldbe switching more slowly than usual because it is sticking slightly or thesample is viscous. Increase the switching time.Shutdown 17—Can’t reach setpoint of multipos valveThe valve is switching to the wrong position or is unable to switch to the setpointposition. The valve will shut down. Clear the shutdown by entering a newsetpoint. Possible causes include:257Return to Contents

Shutdown messagesMessages The valve position is incorrect. A setpoint was entered that the valve isunable to reach. For example, position ten was entered for an eight-portvalve. Enter a correct valve position setpoint.The Invert BCD setpoint is incorrect. With most valves, the invert should beOn. If the BCD setpoint is already On and you experience a shutdown, set itto Off.Shutdown 18—Front inlet cryo shutdownShutdown 19—Back inlet cryo shutdownThe inlet is shut down. A cryogenic shutdown conserves liquid coolant whenthe GC is unable to start a run. A cryo shutdown does not mean that the cryogeniccooling system is malfunctioning. Instead, one of the following could be thecause: A “cryo timeout” has occurred. This happens if the GC inlet has reached itstemperature setpoint but the amount of time you specified for the cryotimeout setpoint has elapsed without a run beginning.Turn the inlet off and then on again or change the setpoint to restore normaloperation. Then turn the timeout option off to prevent another shutdown orlengthen the timeout period. A “cryo fault” has occurred. Cryogenic cooling has been on for over 16minutes but the inlet has not reached its temperature setpoint.Check the level of the cryogenic fluid and replace the supply if it is too lowfor proper cooling. The cryo valve may be stuck open or closed. If your fluidsupply is adequate, the valve may be broken or the electronics driving it maybe malfunctioning (this is a less likely cause). Contact your Agilent servicerepresentative.Shutdown 20—Aux 1 cryo shutdownShutdown 21—Aux 2 cryo shutdownThe Auxiliary temperature zone equipped with cryo cooling has shut down. Acryogenic shutdown conserves liquid coolant when the GC is unable to start arun. A cryo shutdown does not mean that the cryogenic cooling system ismalfunctioning. Instead, one of the following could be the cause: A “cryo timeout” has occurred. This happens if the GC Aux zone has reachedits temperature setpoint but the amount of time you specified for the cryotimeout setpoint has elapsed without a run beginning.258Return to Contents

Shutdown messagesMessagesTurn the zone off and then on again or change the setpoint to restore normaloperation. Then turn the timeout option off to prevent another shutdown orlengthen the timeout period. A “cryo fault” has occurred. Cryogenic cooling has been on for over16 minutes but the Aux zone has not reached its temperature setpoint.Check the level of the cryogenic fluid and replace the supply if it is too lowfor proper cooling. The cryo valve may be stuck open or closed. If your fluidsupply is adequate, the valve may be broken or the electronics driving it maybe malfunctioning (this is a less likely cause). Contact your Agilent servicerepresentative.Shutdown 22—Front inlet heating too slowly:temperature shut offShutdown 23—Back inlet heating too slowly:temperature shut offThe inlet heater has been full on for a long time but the inlet temperature is notat setpoint. Either the temperature sensor for the zone has failed, or the zone’sheater is defective.259Return to Contents

Warning messagesMessagesWarning messagesTable 26 lists the Warning messages for the GC. Most require Agilent serviceintervention. Those that users can correct are indicated along with the correctiveprocedures.Table 26Warning MessagesWarning no.Status messagePopup message100Oven sensor missingOven sensor missing101Invalid heater powerInvalid heater power forfront detector, inlet, andaux 1Run log entryCommentsIf using an MSD, makesure the Aux zone isconfigured for an MSDtransfer line.102Invalid heater powerInvalid heater power forfront detector, inlet, andaux 2103Sig 1 buffer fullSig 1 buffer fullPossible data loss:Sig 1 buffer fullSee page 263.104Sig 2 buffer fullSig 2 buffer fullPossible data loss:Sig 2 buffer fullSee page 263.105Analog out data lossAnalog out data lossPossible data loss:Analog out data lossContact Agilentservice.106Signal data lossNon-recoverable data loss.Data corrupt.Possible data loss:Signal data lossContact Agilentservice.107F det config changedFront det: config changed,method defaultedCorrect the method tomatch your hardware.108B det config changedBack det: config changed,method defaultedCorrect the method tomatch your hardware.109F inl config changedFront inlet: config changed,method defaultedCorrect the method tomatch your hardware.110B inl config changedBack inlet: config changed,method defaultedCorrect method tomatch your hardware.111Col 1 config changedColumn 1: config changed,method defaultedCorrect method tomatch your hardware.260Return to Contents

Warning messagesMessagesTable 26, continuedWarning no.Status messagePopup message112Col 2 config changedColumn 2: configchanged, methoddefaultedCorrect method tomatch your hardware.113Aux 3 method changedAux 3 config changedMethod defaultedCorrect method tomatch your hardware.114Aux 4 method changedAux 4 config changedMethod defaultedCorrect method tomatch your hardware.115Aux 5 method changedAux 5 config changedMethod defaultedCorrect method tomatch your hardware.116Run log entryLog overflowCommentsRun log capacity is 50entries.117F inl calib deletedF inl calib deleted118B inl calib deletedB inl calib deleted119F det calib deletedF det calib deleted120B det calib deletedB det calib deleted121P aux calib deletedP aux calib deleted122Comm data overrunHost communications:data overrunPossible data loss:Comm data overrunContact Agilentservice.123Comm data errorHost communications:data errorPossible data loss:Comm data errorContact Agilentservice.124Comm abnormal breakHost communications:abnormal breakPossible data loss:Comm abnormal breakCheck connection.125Sampler data overrunSampler communications:data overrunPossible data loss:Sampler data overrunCheck your samplersettings. ContactAgilent service.126Sampler data errorSampler communications:data errorPossible data loss:Sampler data errorCheck your samplersettings. ContactAgilent service.127Sampler abnormal comSampler communications:abnormal breakPossible data loss:Sampler abnormal comCheck connection.Inlet module is returnedto default calibration.Detector module isreturned to defaultcalibration.Module is returned todefault calibration.261Return to Contents

Warning messagesMessagesTable 26, continuedWarning no.Status messagePopup message128F inl flow cal failFront inlet flow sensorauto zero calib failed.Contact Agilentservice.129B inl flow cal failBack inlet flow sensorauto zero calib failed.Contact Agilentservice.130Aux 1 cryo disabledAux 1 & front inlet onsame cryo valve drive:aux1 disabledReconfigure aux or inletcryo drive.131Aux 2 cryo disabledAux 2 & back inlet onsame cryo valve drive:aux2 disabledReconfigure Aux or inletcryo drive.132Chgd Col 1 Init time to###.## ; avoids SamplingEnd problem133Chgd Col 2 Init time to###.## ; avoids SamplingEnd problemFor Volatiles interface,a setpoint conflictedwith the Sampling Endtime parameter. Checkyour method. See ”TheVolatiles Interface” formore information.138F inj/inlet mismatchFront injectorincompatible with frontinlet138b inj/inlet mismatchBack injectorincompatible with frontinlet140Chgd FI Saver time to###.## ; avoids SamplingEnd problem141Chgd BI Saver time to###.## ; avoids SamplingEnd problem142Chgd FI Purge time to###.## ; avoids SamplingEnd problem142Chgd BI Purge time to###.## ; avoids SamplingEnd problemRun log entryCommentsFor Volatiles interface,a setpoint conflictedwith the Sampling Endtime parameter. Checkyour method. See ”TheVolatiles Interface” formore information.262Return to Contents

Warning messagesMessagesWarning 103–Sig 1 buffer fullWarning 104–Sig 1 buffer fullUsually, this error occurs when your data collection device (for example, a PCrunning Agilent Cerity or ChemStation software) goes off-line while the GC isstill collecting data.Possible causes and solutions: There is a problem with the PC, the cabling to the PC, or the local networkthat links the GC to the PC. Check the PC, cabling, and network.The PC was turned off without closing the Agilent Cerity or ChemStationinstrument session. The GC collects and

troubleshooting and maintenance information in many of the chapters in this and the Inlets and Detectors sections. There are six message types: Not Ready A Not Ready message means that some component of the GC is not ready to begin a run. When the GC is not ready, the Not Ready