Veeder-Root TLS-350 alarms

What each message means, and what the store can do.

Also the TLS-300 and TLS-350R.

Updated October 18, 2026

To silence it

  • Press the red ALARM/TEST key to stop the beeper.
  • The warning and alarm lights stay on until the cause is fixed.

Tank alarms

Tank alarms: what each message means and what to do
On the screenWhat it meansWhat to doManual
ANN TST NEEDED ALMA yearly 0.1 gph leak test of a tank or line wasn’t done in time.Schedule the leak test.576013-610, p. 29-4
ANN TST NEEDED WRNA yearly 0.1 gph leak test of a tank or line wasn’t done in time.Schedule the leak test.576013-610, p. 29-4
ANNUAL TEST FAILThe tank failed its yearly 0.1 gph leak test.More on this alarmRerun the test once. Fails again? Call a tech.576013-610, p. 29-4
CSLD INCR RATE WRNToo much liquid leaked into the tank during a test.Call a tech.576013-610, p. 29-4
DELIVERY NEEDEDFuel dropped below the reorder level set in the monitor.More on this alarmCall for a delivery.576013-610, p. 29-4
DELIVY DENSITY WRNThe delivery’s fuel density wasn’t entered.Enter the delivery’s fuel density.576013-610, p. 29-4
FUEL QUALITY ALARMThe tank may hold the wrong fuel, or water-separated fuel.Just had a delivery? Check it was the right fuel.576013-610, p. 29-4
GROSS FAIL LINE TNKA tank or line failed a 3 gph leak test.More on this alarmRerun the test once. Fails again? Call a tech.576013-610, p. 29-4
GROSS TEST FAILThe tank failed a 3 gph leak test.More on this alarmRerun the test once. Fails again? Call a tech.576013-610, p. 29-4
HIGH PRODUCT ALARMThe tank is fuller than the limit set in the monitor.More on this alarmNo more deliveries until fuel is sold.576013-610, p. 29-4
HIGH WATER ALARMWater in the tank is over the alarm limit.More on this alarmHave the water taken out.577014-243, p. 5
HIGH WATER WARNINGWater in the tank is over the warning limit.More on this alarmHave the water taken out.576013-610, p. 29-5
INVALID FUEL LEVELFuel is so low the probe can’t read it.More on this alarmCall for a delivery.576013-610, p. 29-5
LEAK ALARMA tank leak test failed.More on this alarmRerun the test once. Fails again? Call a tech.576013-610, p. 29-5
LOW PRODUCT ALARMFuel is below the low limit set in the monitor.More on this alarmCall for a delivery.576013-610, p. 29-5
LOW TEMP WARNINGThe tank probe is colder than -4°F.Clears when the temperature is back in range.576013-610, p. 29-5
MAX PRODUCT ALARMThe tank is over its maximum level.More on this alarmStop the delivery. No more until fuel is sold.576013-610, p. 29-5
MISSING TICKET WARNA delivery’s ticket wasn’t entered at the monitor.Enter the delivery ticket.576013-610, p. 29-5
NO CSLD IDLE TIMENot enough idle time in 24 hours to run the leak test.Stop selling from that tank until the test ends.576013-610, p. 29-5
OVERFILL ALARMFuel is over the fill limit. The tank may overflow.More on this alarmStop the delivery. Check for spills.576013-610, p. 29-5
PER TST NEEDED ALMA 0.2 gph leak test of a tank or line wasn’t done in time.Schedule the leak test.576013-610, p. 29-5
PER TST NEEDED WRNA 0.2 gph leak test of a tank or line wasn’t done in time.Schedule the leak test.576013-610, p. 29-5
PERIODIC TEST FAILThe tank failed a 0.2 gph leak test.More on this alarmRerun the test once. Fails again? Call a tech.576013-610, p. 29-5
PROBE OUTThe tank’s probe or its wiring has failed.More on this alarmCall a tech.576013-610, p. 29-5
SETUP DATA WARNINGtank probeA tank’s setup is wrong, or its probe was out at startup.Call a tech.576013-610, p. 29-5
SUDDEN LOSS ALARMThe fuel level dropped while no fuel was being sold.More on this alarmCheck for a big leak. Call a tech.576013-610, p. 29-5
TANK SIPHON BREAKA siphon break valve closed the manifold for a tank test.Nothing. It clears by itself.576013-610, p. 29-5
TANK TEST ACTIVEA tank leak test is running.Don’t sell from that tank until it clears.576013-610, p. 29-5

Line leak alarms

Line leak alarms: what each message means and what to do
On the screenWhat it meansWhat to doManual
ANNUAL LINE FAILA line failed its yearly 0.1 gph leak test.More on this alarmCan stop salesCall a tech.576013-610, p. 29-9
COMM ALARMwireless line leak detectorThe monitor isn’t hearing a wireless line leak detector.Call a tech.576013-610, p. 29-11
CONT HANDLE ALRMA pump handle signal or a pump has been on for hours.Call a tech.576013-610, p. 29-10
FUEL OUTFuel is below 10 inches. The pump can’t run.More on this alarmStops salesCall for a delivery.576013-610, p. 29-10
FUEL OUTvolumetric line leak detectorFuel is below 10 inches and three 3 gph self-tests failed.More on this alarmCall for a delivery.576013-610, p. 29-12
GROSS LINE FAILA line failed its 3 gph leak test.More on this alarmCan stop salesCall a tech.576013-610, p. 29-10
LN EQ FAULT ALMThe line’s pressure-measuring equipment has a fault.Call a tech.576013-610, p. 29-10
LOW PRESSURE ALARMLine pressure dropped during a sale.Can stop salesThe next sale restarts the pump.576013-610, p. 29-10
PERIOD LINE FAILA line failed its 0.2 gph leak test.More on this alarmCan stop salesCall a tech.576013-610, p. 29-10
PLLD OPEN ALARMThe line’s pressure sensor reads below -8 psi.Can stop salesCall a tech.576013-610, p. 29-10
PLLD SHUTDOWN ALARMThe monitor shut this line after a failed test or an alarm.More on this alarmStops salesCall a tech.576013-610, p. 29-10
SETUP DATA WARNINGline leak detectorThe line’s real length was never entered.Call a tech.576013-610, p. 29-10
ANN-LINE TEST FAILThe volumetric detector’s yearly 0.1 gph line test failed.Call a tech.576013-610, p. 29-12
ANN-LINE SELF FAILThe yearly 0.1 gph line self-test failed twice.Call a tech.576013-610, p. 29-12
ANN-PUMP TEST FAILThe yearly 0.1 gph pump-side test failed.Call a tech.576013-610, p. 29-12
ANN-PUMP SELF FAILThe yearly 0.1 gph pump-side self-test failed.Call a tech.576013-610, p. 29-12
GRS LINE TEST FAILThe 3 gph line test failed.Call a tech.576013-610, p. 29-12
GRS LINE SELF FAILThe 3 gph line self-test failed.Rerun the test once. Fails again? Call a tech.576013-610, p. 29-12
GRS PUMP TEST FAILThe 3 gph pump-side test failed.Rerun the test once. Fails again? Call a tech.576013-610, p. 29-12
GRS PUMP SELF FAILThe 3 gph pump-side self-test failed.Rerun the test once. Fails again? Call a tech.576013-610, p. 29-12
LINE LEAK SHUTDOWNA line or pump-side test failed, so the pump was shut off.More on this alarmStops salesCall a tech.576013-610, p. 29-12
LINE LEAK TEST FAILA line or pump-side leak test failed.Call a tech.576013-610, p. 29-13
LLD PRESSURE ALARMSix tests in a row found the pump not running.Call a tech.576013-610, p. 29-13
LLD PRESSURE WARNThree tests in a row found the pump not running.Call a tech.576013-610, p. 29-13
LLD SELF TEST FAILThe line leak detector’s hardware has failed.Call a tech.576013-610, p. 29-13
LLD TEST FAULT-ANNThe line leak detector’s hardware has failed.Call a tech.576013-610, p. 29-14
LLD TEST FAULT-GRSThe line leak detector’s hardware has failed.Call a tech.576013-610, p. 29-14
LLD TEST FAULT-PERThe line leak detector’s hardware has failed.Call a tech.576013-610, p. 29-14
PER-LINE TEST FAILThe 0.2 gph line test failed twice.Rerun the test once. Fails again? Call a tech.576013-610, p. 29-13
PER-LINE SELF FAILThe 0.2 gph line self-test failed.Rerun the test once. Fails again? Call a tech.576013-610, p. 29-13
PER-PUMP TEST FAILThe 0.2 gph pump-side test failed.Rerun the test once. Fails again? Call a tech.576013-610, p. 29-13
PER-PUMP SELF FAILThe 0.2 gph pump-side self-test failed.Rerun the test once. Fails again? Call a tech.576013-610, p. 29-13
SELF TEST INVALIDA self-test failed during a test someone started.Rerun the test once. Fails again? Call a tech.576013-610, p. 29-13

Sump, pan and tank wall sensors

Sump, pan and tank wall sensors: what each message means and what to do
On the screenWhat it meansWhat to doManual
COMMUNICATION ALARMsmart sensorA smart sensor or its wiring has failed.Call a tech.576013-610, p. 29-17
FUEL ALARMA sensor found fuel, or a basic sensor found any liquid.More on this alarmCall a tech.576013-610, p. 29-6
FUEL WARNINGA smart sensor’s fuel reading passed its warning limit.Call a tech.576013-610, p. 29-17
HIGH LIQUID ALARMsump or pan sensorLiquid is 8 in. deep in a dispenser pan or 10 in. in a sump.More on this alarmFollow your store’s alarm steps now.576013-610, p. 29-7
HIGH LIQUID ALARMbrine sensor in a tank wallThe brine level in the tank wall is rising. Liquid may be getting in.Call a tech.576013-610, p. 29-7
HIGH LIQUID ALARM3-wire or smart sensorThe sensor found a high liquid level.Call a tech.576013-610, p. 29-15
HIGH LIQUID WARNINGA smart sensor’s liquid level passed its warning limit.Call a tech.576013-610, p. 29-17
INSTALL ALARMA smart sensor isn’t sitting in the right position.Call a tech.576013-610, p. 29-17
LIQUID WARNINGLiquid is 1 in. deep in a dispenser pan or sump.More on this alarmFollow your store’s alarm steps now.576013-610, p. 29-8
LOW LIQUID ALARMThe brine level in the tank wall dropped. A wall may have a hole.Call a tech.576013-610, p. 29-7
LOW LIQUID WARNINGA smart sensor’s liquid level fell past its warning limit.Call a tech.576013-610, p. 29-17
NO VACUUM ALARMA tank wall that should hold a vacuum has none.Call a tech.576013-610, p. 29-17
SENSOR FAULT ALARMA smart sensor, or a part of it, isn’t working.Call a tech.576013-610, p. 29-17
SENSOR FAULT WARNINGA vacuum sensor’s control valve isn’t working.Call a tech.576013-610, p. 29-17
SENSOR OUT ALARMA sensor is unplugged, faulty or set up wrong.More on this alarmCall a tech.576013-610, p. 29-7
SETUP DATA WARNINGsensorA sensor is programmed wrong.Call a tech.576013-610, p. 29-17
SHORT ALARMA sensor or its wiring has shorted.Call a tech.576013-610, p. 29-7
TEMPERATURE WARNINGIt’s too hot or too cold for the sensor (-40 to 122°F).Clears when the temperature is back in range.576013-610, p. 29-17
VACUUM WARNINGThe vacuum in a tank wall is leaking away.Call a tech.576013-610, p. 29-17
WATER ALARMA sensor found water, or a vapor sensor is under water.Call a tech.576013-610, p. 29-8
WATER OUT ALARMGroundwater fell below the sensor, so it can’t do its job.Call a tech.576013-610, p. 29-14
WATER WARNINGA smart sensor’s water reading passed its warning limit.Call a tech.576013-610, p. 29-17

Submersible pump

Submersible pump: what each message means and what to do
On the screenWhat it meansWhat to doManual
PUMP RELAY ALARMA submersible pump kept running after it should have stopped.Call a tech.576013-610, p. 29-18
SETUP DATA WARNINGpump relayA pump relay is assigned but not set up.Call a tech.576013-610, p. 29-18

Tank monitor, printer and inputs

Tank monitor, printer and inputs: what each message means and what to do
On the screenWhat it meansWhat to doManual
ALARM CLEAR WARNINGAn alarm set to call out has cleared.Nothing. It clears by itself.576013-610, p. 29-9
AUTODIAL FAILUREThe monitor couldn’t reach a remote receiver.Call a tech.576013-610, p. 29-9
BATTERY IS OFFThe backup battery is off. A power cut would erase the setup.Call a tech.576013-610, p. 29-3
CLOCK IS INCORRECTThe clock is off by over 10 seconds. Its battery may be dead.Call a tech.576013-818, p. 5-2
CLOSE DAILY WARNINGWaiting for a quiet moment to close the daily report.Nothing. It clears by itself.576013-610, p. 29-16
CLOSE SHIFT WARNINGWaiting for a quiet moment to close the shift report.Nothing. It clears by itself.576013-610, p. 29-16
COMMUNICATION ALARMdispenser interfaceThe monitor lost contact with a dispenser interface device.Call a tech.576013-610, p. 29-16
DELIVERY REPORT WARNThe monitor called out a delivery report.Nothing. It clears by itself.576013-610, p. 29-9
DISABLED DIM ALARMThe monitor’s dispenser interface board stopped answering.Call a tech.576013-610, p. 29-16
EXTERN INPUT ALARMA device wired to the monitor changed state.Check the device wired to this input.576013-610, p. 29-16
FPROM WRITE FAILUREA memory board in the monitor has an error.Call a tech.576013-610, p. 29-3
NO DIAL TONE ALARMThe monitor’s phone line has no dial tone.Call a tech.576013-610, p. 29-9
NO MT COMMA Maintenance Tracker board was removed.Call a tech.576013-610, p. 29-3
NO NVMEMA memory board Maintenance Tracker needs is missing.Call a tech.576013-610, p. 29-3
PAPER OUTThe printer is out of paper.More on this alarmPut in a new paper roll.576013-610, p. 29-3
PC(H8) REVISION WARNA board’s software doesn’t match the monitor’s.Call a tech.576013-610, p. 29-3
PRINTER ERRORThe printer’s roller release is open.More on this alarmPush the printer’s release lever up.576013-610, p. 29-3
PROD THRESHOLD ALMFuel sold and fuel measured are off by more than the limit.Call a tech.576013-610, p. 29-16
PROTECTIVE COVER ALARMThe safety cover over the power area is off.Call a tech.576013-610, p. 29-3
RAM ERR ADDR = 01E80000New software is running on an older board.Call a tech.576013-610, p. 29-3
REMOTE DISPLAY ERRORThe remote display isn’t talking to the monitor.Call a tech.576013-610, p. 29-3
ROM REVISION WARNINGThe software versions don’t match.Call a tech.576013-610, p. 29-3
SERVICE NOTICEA service session is on. It ends within 8 hours.Nothing. It clears by itself.576013-610, p. 29-3
SERVICE REPORT WARNThe monitor called out a service report.Nothing. It clears by itself.576013-610, p. 29-9
SOFTWARE MODULE WARNThe software module is wrong or can’t be read.Call a tech.576013-610, p. 29-3
SYS MAINT NVMEM ERRThe maintenance history memory card was removed.Call a tech.576013-610, p. 29-3
SYS MT SER CARD ERRThe maintenance history serial card was removed.Call a tech.576013-610, p. 29-3
SYSTEM SELF-TEST ALMThe backup battery was switched on too early at startup.Call a tech.576013-610, p. 29-4
TOO MANY TANKSMore tank probes are connected than the monitor allows.Call a tech.576013-610, p. 29-4
TRANSACTION ALARMNo sales data is coming from the dispenser interface.Call a tech.576013-610, p. 29-16
WRONG SOFTWARE WARNINGTLS-350 software is installed in a TLS-300.Call a tech.576013-610, p. 29-4

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Sources: Veeder-Root 576013-610, Rev AC (2013), Veeder-Root 577014-243, Rev C (2026), Veeder-Root 576013-818, Rev AB (2021).

Rows checked against the manual October 18, 2026.

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