Metex 2200R ORP Analyzer/Controller - Manual (Page 21)

Model 2200R Page 19
5.15 Status
3.5.1 The 2200R continuously checks the integrity of all stored data and monitors the
condition of the measuring system. If a fault is detected, the STATUS LED above
the display will change from green to red. When this occurs, enter the menu and
scroll through the menu until the STATUS LED illuminates. The display will show a
numerical code to assist you, in correcting the problem.
The following table shows the display codes, causes and remedies:
CODE POSSIBLE CAUSE SUGGESTED REMEDY
0 Normal Condition No action required
1 ORP probe efficiency <60% or
>110% Nernst coefficient (Probe
slope out of tolerance Clean probe and recalibrate. Salt
bridge / probe may need
replacement
2 Temperature Sensor off Scale Check for open or short
connections of temperature sensor
input (Terminals BK & YL on TB2)
3 ORP reading off Scale Verify process. Check for open or
short connections
4* Memory Loss Call your AquaMetrix Rep. Or
AquaMetrix directly
5* EPROM write failure Call your AquaMetrix Rep. Or
AquaMetrix directly
6 Calibration out of limit Check scale setting (See range
change in Utility Menu)
7 Factory settings in force as a result
of the “Factory Reset Procedure”
8 ORP calibration not correct, or not
performed Re-calibrate (See Sec. 5.2 & 5.3)
9 Temperature calibration not correct
or not performed Calibrate temperature (See Sec.
7.4)
NOTE: Code 4 and 5 could be serious failures so the alarm relay will activate, in addition to the
status LED changing to red, if programmed by the position of DIP switch No. 5 of Bank S1.
Refer to Section 4.7.