How do I clear an err 1 on my HI 2151/30WC or HI 2110 WI?

My HI 2151/30WC or HI 2110 WI is reading 8193 in the "grad" setting. I cannot enter a new value because every button pressed gives an "err 1" message. The diagnostic test shows no problem, how do I fix this?

The correct action to clear the error 1 message is to change the Graduations (GRAD) setting to a value that is within the proper range.  GRAD is used to increment the weight readings in steps that are appropriate for your scale system capacity.  You can change the GRAD setting by using the up and down arrow while in the calibration GRAD menu. 

Your GRAD size of 8193 is out of range number, and will not change.  This is probably the result of internal processor memory corruption. The proper course to follow would be to clear the internal memory back to factory default. This will set the GRAD size to 1 and allow you to make the change.  Typically cycling power will read the Secure Memory Module (SMM) and reinstalls the correct memory.  If cycling the power fails to work, the corruption is in the SMM and a total reset to factory defaults is required.

Valid  GRAD size increments are 1, 2, 5, 10, 20, 50, 100, 200, and 500.  These are selections and not entries.  So you must use the up and down arrow to make your selection, followed by pressing the Enter key.

Causes for the GRAD size to be corrupted is power fluctuations, static discharge through the load cells, connecting and disconnection the load cell cable with power applied, and selecting too many decimal points for the scale capacity.

Scale capacity divided by 10,000 should give the maximum allowable decimal points. This is the point of a scale that the weight readings are stable and the maximum resolution of most scales.

Power surges, power spikes, load cell line noise and/or static discharges can corrupt the instrument's memory causing drifting weight readings, loss of SET POINTS and calibration data, or erratic performance. In some cases, rebooting the instrument will resolve the problem, but in other cases the Random Access Memory (RAM) must be cleared and default parameters loaded back into memory. When this is performed, the instrument must be re-calibrated and all SET POINTS and option data must be re-entered as if the unit was just being installed for the first time.

WARNING! When the following procedures is performed the instrument must be re-calibrated and all SET POINTS and OPTION data must be re-entered as if the unit was just being installed for the first time. Collect the data in self-test before clearing the memory. Press self-clear and the entries will scroll by. Press down arrow to pause and up arrow to continue.

SETTING MEMORY TO FACTORY DEFAULT SETTINGS: (This procedure is true for the HI 2110 WI and HI 2151/30WC weight controllers.)

On HI 2151/30WC and HI 2110 WI units a dip switch is used to erase the memory. The dip switch is located on the edge of the Power/Relay board. The Power/Relay board is the lower of the two full size boards in the weight controller.

This process returns the instrument to factory default parameters

HARDWARE PROCEDURES: 
1. Remove power from the weight controller.
2. Open the weight controller.
3. Locate the internal dip switches labeled S2.
4. Place only the internal dip switch #8 in the ON position.
5. If you have any other dip switch ON, record the positions then turn them all OFF.
6. Assemble the weight controller.
7. Apply power to the weight controller.
8. Wait for the system self test to be completed (The display will read TAGCLR).
9. Remove power from the weight controller.
10. Open the weight controller.
11. Place internal dip switch #8 in the off position. Return any switches that were ON (see step # 5) back to the ON position.
12. Assemble the weight controller.
13. Apply power to the weight controller.

WARNING! This process returns the instrument t