Alco-Sensor Troubleshooting

Troubleshooting Procedures
Alco-Sensor IV	Alco-Sensor IV with Memory	RBTIV
Alco-Sensor II/III	Alco-Sensor FST	Gas Tank / Regulator

Alco-Sensor, Alco-Sensor III
Symptom	Cause	Test Procedure	Solution
Display .888”	Low battery	Press and hold READ button, observe display	Replace with fresh Alkaline battery
Display has missing digit(s) and/or missing segment(s) in digit(s)	IC(s) on circuit board have become unseated	Press and hold READ button, observe display	Send to AlcoPro for evaluation
Calibration screw does not work	Using Previous Version calibration procedure for New Version instrument	Mouthpiece ejector button = New Version Instrument	Use correct calibration instruction. Click here
Calibration screw does not work	Calibration Screw is broken	In correct calibration mode, numbers do not change when turning screw.	Send to AlcoPro for evaluation
Alco-Sensor IV (Any dot color) Back to Top
Symptom	Cause	Test Procedure	Solution
Display “BAT”	Low battery	Insert mouthpiece, observe display	Replace with fresh Alkaline battery
Keeps recycling back to temperature or temperature stays on and will not go to “TEST”	Low battery	Insert mouthpiece, observe display	Replace with fresh Alkaline battery
Display “V004,” do not hear ‘click’ when taking sample	Unit not taking sample	Insert mouthpiece, press MANUAL button when “TEST” flashes, observe display	Send to AlcoPro for evaluation
Unit will not perform test – will only display “V014”	Voided sample analysis	Insert mouthpiece, blow into mouthpiece when “TEST” flashes, observe display	Recalibrate unit. If recalibration does not work, Send to AlcoPro for evaluation
Display flashing “MAN” instead of “TEST”, unit will operate only when using ‘Manual’ button – will not auto sample	Breath Thermistor is not operating	Insert mouthpiece, observe display	Send to AlcoPro for evaluation
Displays “+” and “NoGo” without a sample being blown May, intermittently, take sample normally	Breath Thermistor is not operating correctly	Insert mouthpiece, observe display	Send to AlcoPro for evaluation
Not holding calibration or peak time is over 1 minute	Fuel cell may be weak	Perform accuracy check, noting result and time it takes to display result	Send to AlcoPro for evaluation
Alco-Sensor IV w/Memory black dot Back to Top
Symptom	Cause	Test Procedure	Solution
Display “Mem Full”	Internal memory full	Insert mouthpiece, observe display	Upload memory (if necessary), then erase memory. Click here for instructions.
Printing incorrectly	Printer setting	Perform test and print result	Change printer setting from P1 to P2 or vice versa. Click here for instructions.
Date/Time incorrect on printouts	Memory error	Perform test, observe Time/Date on initial display AND printout	Set Year to an incorrect year, complete menu, go back into Time/Date set, then reenter correct year. Click here for instructions
RBT IV Back to Top
Symptom	Cause	Test Procedure	Solution
Incorrect Time/Date	Time /Date not updated	Turn on RBT printer, observe Time/Date	Set Timeand Date according to procedures outlined in manual. See Instructions
Will not print	Low charge on 12volt battery	Perform “Last Test” on printer	Plug AC charger into RBTIV case and electrical outlet overnight. Replace battery if necessary.
RBT printer displays “Memory Full”	RBT IV memory is full	Turn RBT printer on, press START button to begin a test sequence, observe display	Erase RBT memory. See Instructions
RBT printer displays “Dump and Erase”	RBT IV memory is almost full	Turn RBT printer on, press START button to begin a test sequence, observe display	Erase RBT memory. See Instructions
Alco-Sensor FST Back to Top
Symptom	Cause	Test Procedure	Solution
Display “bAt”	Low battery	Turn instrument on, observe display	Replace batteries with two fresh AA Alkaline batteries
Does not sample Dry Gas automatically when doing Accuracy Check	Using 1.5 LPM regulator	Note 1.5 LPM label on regulator	Press ON button for Manual Sample when performing Accuracy Check. Click here for instructions. (Only regulators marked as 6 LPM flow rate will produce automatic sample for Accuracy Checks.)
Instrument does not turn on when pressing ON button	ON button broken	Press and hold ON button with trigger finger, observe display	Send to AlcoPro for evaluation
Tank and Regulator Back to Top
Symptom	Cause	Test Procedure	Solution
Regulator gauge reads 900 psi or greater	Full gas tank	Observe regulator gauge	Gas tank is full and ready for use