Issue	Probable Cause	Solution
Display does not light up	AC power not present	Ensure unit is plugged in. Check power to the outlet.
Display locked up	Possible power surge	Recycle AC power to the indicator
Keypad does not respond	Possible power surge	Recycle AC power to the indicator.
Weights are not correct	Mechanical bind	Check for debris under platform. Check for objects leaning against the platform.
Weights are not correct	Wrong units	Check to be sure scale is in the desired units.
ZERO key does not respond	Unit is in "net" mode	Check to ensure the unit is in the "gross weighing mode."

Bench Scales

Issue	Probable Cause	Solution
Beeps and display flashes	Limit value enabled	Press the Total key. Press the PLUS key. Press the CLEAR key. Press ENTER to return to the weigh mode. Battery Models - Press the TOTAL key twice. Enter "0" from the numeric keypad and press ENTER. Press TOTAL to return to the weigh mode.
Does not return to ZERO. Does not repeat known weight.	Bind	Check for debris under platform. Check for objects leaning against the platform.
Does not return to ZERO. Does not repeat known weight.	Defective load cell	Call for service.
Incorrect count	Sample size too small.	Resample the product using a larger quantity of pieces.
Incorrect count	Pieces weighed are not uniform	Resample the product using a larger quantity of pieces.
"LoBAtt"	Batteries below 7 vdc	Replace batteries.
No display	No power	Check to ensure power cord is plugged into the outlet. Check circuit breaker.

Counting Scales

Issue	Probable Cause	Solution
Inaccurate weights	Uneven surface, uneven heights.	Place scale on clean flat surface. Make sure all corners are evenly supported and not tipping back and forth.
Inaccurate weights	Obstructions, debris	Clean out around and under scale. Make sure no foreign objects are wedged under scale.
Platform rigid and not oscillating	Broken suspension parts.	Call for service.
Platform rigid and not oscillating	Obstructions, debris	Clean out around and under scale. Make sure no foreign objects are wedged under scale.
Scale stays on zero with weight applied.	Broken or cut cable.	Make sure load cell cable is undamaged. If equipped with quick disconnect, make sure cable is fully plugged in.
Weight display not returning to Zero	Obstructions, debris	Clean out around and under scale. Make sure no foreign objects are wedged under scale.
Weight display not returning to Zero	Uneven surface, uneven heights	Place scale on clean flat surface. Make sure all corners are evenly supported and not tipping back and forth.
Weight display not returning to Zero	Defective load cell	Call for service.
Weight display unstable	Broken or cut cable.	Make sure load cell cable is undamaged. If equipped with quick disconnect, make sure cable is fully plugged in.
Weight display unstable	Defective load cell	Call for service.
Weight display unstable	Excessive vibration	Dampen source of vibration with shock absorbing material i.e. Rubber mounting assembly.

Floor Scales

Issue	Probable Cause	Solution
Display does respond	Lost calibration	Recalibrate the scale.
Does not return to zero	Bind	Check for platform bind. Check that the "S" hook is attached at weighbeam and at lever system. Check for correct assembly of platform and that deck floats freely on lever load points.
Erratic weights	Bind	Check for platform bind. Check that the "S" hook is attached at weighbeam and at lever system. Check for correct assembly of platform and that deck floats freely on lever load points.
"Err.OL", "OL1" or "OL2"	Over capacity	Clear platform, press ZERO Check for platform bind. Possible damaged load cell.
"Err.UL", "UL1" or "UL2"	Below ZERO	Replace, or recharge, batteries. Check for broken or cut load cell cable. Check for platform bind. Check that the "S" hook is attached at load cell and at lever system. Check for correct assembly of platform and that deck floats freely on lever load points. Check for platform bind. Check that the "S" hook is attached at weighbeam and at lever system. Check for correct assembly of platform and that deck floats freely on lever load points.
"LoBAtt"	Battery levels low	Replace or recharge batteries.

Industrial Scales

Issue	Probable Cause	Solution
Display powers up, will not display weight	Scale needs to be zeroed.	Make sure platform is empty. Press the zero button.
No Weight Display	No power	Make sure instrument plugged in power source. If equipped with ON/OFF switch, turn it on. Check to see if fuse or circuit breaker is blown.
Unstable weight display.	A/C power disturbances	Connect indicator to dedicated AC line. Make sure power source has proper ground. Provide surge protection to AC circuit.
Unstable weight display.	Motion on Scale	Load on scale is moving or unstable. Shelter platform from wind.
Unstable weight display.	Interference with scale.	Clear all foreign debris from under/around scale.
Unstable weight display.	Radio transmissions	Turn off radio, move the radio and antenna away from the Weight Display and Scale.
Weight display stays on Zero	Bad connection to platform	Check condition of cable from indicator to platform, is it cracked or cut, etc. If equipped with quick disconnect, ensure that it is plugged in securely.
Weight display stays on Zero	Weight display is locked up	Turn the weight Indicator off for a few minutes then power back on.

Instrumentation

Issue	Probable Cause	Solution
ASLEEP	Weight indicator has turned itself OFF	This is a programmable feature designed to save the battery when the scale is not being used. Turn the scale ON.
Constant / Intermittent unstable display	A/C power disturbances	Is the A/C power used for the scale a dedicated line (connected to a single breaker in the A/C power service panel)? Is the A/C power outlet properly wired with a ground?
Constant / Intermittent unstable display	Motion on scale	Secure movement on the scale. Allow time for moving liquid inside containers on the scale to stop.
Constant / Intermittent unstable display	Radio transmissions	Turn off radio, move the radio and antenna away from the weight display and scale.
Inaccurate weights weight display not returning to zero	Obstructions water, debris	Ensure the scale platform / load receiver is clean, clear, and free of any material that could cause it to jam and cause inaccurate weights. If it is a truck or rail scale or floor scale in a pit, ensure the space between the deck edge, pit coping, and rails is clear and free of any material which could jam the deck and cause inaccurate weights. If it is a floor scale, ensure the space between the scale and floor is clean and free of debris. Also ensure that each corner of the scale is sitting solidly on the floor, the scale must not "rock" on diagonal corners. If it has a pit, ensure the scale pit and understructure is clean and dry. Ensure the drains for the pit are clear and not blocked, and that any installed automatic sump pump and discharge piping are in good working condition. If it is a tank scale, ensure there is sufficient slack adjusted into any piping, lines, and hoses that connect to the scale. All connections should be in the horizontal plane to the tank. Is there a cooling / heating jacket within the tank that is receiving weight to the scale?
No weight display	No power	Is there power? If battery powered, it the battery recharged and connected properly? Is the Weight Indicator turned on? If A/C powered, is there power? Are there any auxiliary power supply accessories used with the weight indicator, and if so, are they plugged in?
Weight display stays on zero; no response to the keypad / keys	Weight display is locked up	Turn the weight indicator off for a few minutes.

Intrinsically Safe

Issue	Probable Cause	Solution
Alarm light illuminated	Printer fault	Call for service.
Alarm light illuminated	Out of paper	Load paper.
Alarm light illuminated	Paper jammed	Clear paper jam.
Alarm light illuminated	Low on paper	Paper sensor is not being depressed. Load paper.
No indicator lights. No print.	No power	Check to ensure power cord is plugged into the outlet. Check circuit breaker.
No print	SEL or ONLINE off	Press the SEL or ONLINE button to enable.
No print	Interface cable	Check cable for damage. Check to ensure cable is connected at the indicator and printer.
No print	Printer fault	Perform printer self test. Call for service.
Prints garbled characters	Printer fault	Call for service.
Prints garbled characters	Baud rate	Check baud rate setting on switches or internal program printout. Check baud settings on the indicator.
Prints garbled characters	Emulation wrong	Check emulation setting on switches or internal program printout.
Prints partial characters	Printer head damaged	Call for service.
Prints partial characters	Ribbon	Ribbon is defective or threaded incorrectly.

Printers

Issue	Probable Cause	Solution
Constant / intermittent unstable display	Motion on scale	Secure moving car(s) on the scale. Allow time for moving liquid inside containers on the scale to stop.
Constant / intermittent unstable display	Radio transmissions	Turn off radio, move the radio and antenna away from the weight display and scale.
Constant / intermittent unstable display	A/C power disturbances	Is the A/C power used for the scale a dedicated line (connected to a single breaker in the A/C power service panel)? Is the A/C power outlet properly wired with a ground?
Inaccurate weights; Weight display not returning to zero	Obstructions water, debris	Ensure the space between the deck edge, pit coping, and rails is clear and free of any material which could jam the deck and cause inaccurate weights. Ensure the scale pit and understructure is clean and dry. Ensure the drains for the pit are clear and not blocked, and that any installed automatic sump pump and discharge piping are in good working condition.
No weight display	No power	Is there power? If battery powered, is the battery recharged and connected properly?
Weight display stays on zero; no response to the keypad / keys	Weight display is locked up	Turn the weight indicator off for a few minutes.

Railroad Scales

Issue	Probable Cause	Solution
Display does not light up	AC power not present	Ensure unit is plugged in. Check power to the outlet
Display locked up	Possible power surge	Recycle AC power to the indicator
Display returns to zero slowly when truck exits the scale	Debris binding platform	Clean around edges and underneath to ensure the platform has free movement
Weights are off	Debris binding platform	Clean around edges and underneath to ensure the platform has free movement
Weights are off	Display in wrong units	Clean around edges and underneath to ensure the platform has free movement
ZERO key does not respond	Unit is in "net" mode	Check to ensure the unit is in the "gross weighing mode."

Truck Scales

Issue	Probable Cause	Solution
Does not return to ZERO does not repeat known weight	Bind	Check for platform bind. Check load cell installation for plumb, square, and level. Check all mounting brackets and hardware for proper torque.
Does not return to ZERO does not repeat known weight	Load cell cable damaged	Check for broken or cut load cell cable. Check for physical damage to load cell. Check housing of load cell for loose or missing weigh element covers.
Erratic weights	Load cell cable damaged	Check for broken or cut load cell cable. Check for physical damage to load cell. Check housing of load cell for loose or missing weigh element covers.
Erratic weights	Bind	Check for platform bind. Check load cell installation for plumb, square, and level. Check load cell suspension points for free movement.
High output signal load cell	Improper loading	Check for equal load on all load cells
High output signal load cell	Load cell cable damaged	Check for broken or cut load cell fro cable. Check for physical damage to load cell. Check housing of load cell for loose or missing weigh element covers.
Low output signal load cell	Load cell cable damaged	Check for broken or cut load cell fro cable. Check for physical damage to load cell. Check housing of load cell for loose or missing weigh element covers.
Low output signal load cell	Improper loading	Check for equal load on all load cells
No output signal from load cell	Load cell cable damaged	Check for broken or cut load cell cable. Check for physical damage to load cell. Check housing of load cell for loose or missing weigh element covers.
No output signal from load cell	Instrument not working Properly	Check power supply. Check if instrument is turned on. Review Instrumentation FAQ
No output signal from load cell	Bad cable connections	Check connections at balance box and or at instrument.
Tank / Vessel rocks from side to side	Improper loading	Check for equal load on all load cell assemblies.
Tank / Vessel rocks from side to side	Broken or damaged mounting hardware	Checking all mounting hardware for proper torque. Check all mounting hardware for physical damage.

Weighing Assemblies