Hach PAT700 - Accept or Remove an Alarm; Error Codes

After an alarm is acknowledged:
•
The animation area shows steady red.
• The alarm sound is not heard.
• Once a full cycle has occurred without any errors, the error is removed and the normal animation
shows. The digital output will no longer show an error state and the analog outputs represent the
new valid result.
• If on the next cycle the same or a new error occurs, the animation area again flashes red and must
be acknowledged.
• As long as alarms are present in the alarm log, the alarm log is available.
Accept or remove an alarm
When a warning or an error that is not critical occurs, the animation area of the measurement screen
flashes red.
1. Push << to show the sliding menu.
2. Select ALARMS. The Alarm Acknowledge screen opens.
• Push ACCEPT ALARMS (bell with green checkmark) to acknowledge the alarm.
• Push DELETE ALARMS (bell with a red X) to delete all alarms in the list.
3. Push ENTER to return to the measurement screen. If the error condition still exists but has been
accepted, the animation area shows steady red.
Error codes
Table 16 shows the error codes that occur any time one of the non-critical subsystems fail or a failure
occurs from which the analyzer tries to recover.
When an error occurs, the animation area flashes red to identify when an error condition is present.
In addition, the digital output that represents the error condition and the three analog outputs (2 or
22 mA) change their state to identify when an error condition is present. Refer to Alarm indication
on page 42.
When the error condition is removed, the analyzer attempts to recover and continue to operate. Once
a valid TOC measurement is completed, the analog outputs once again represent the measured
values.
Table 16 Error codes
Code Message Description
SC027 FalseConductivity The measured conductivity is less than 0.
SC029 BadTocConvert The temperature/conductivity is out of bounds for TOC conversion.
SC035 LowOxidationRate The TOC is too low (out of range).
SC036 NegativeTOC Negative TOC (out of range). Organic acids may be present.
SC037 LowTemperature The temperature is out of range low.
SC038 HighTemperature The temperature is out of range high.
SC039 LowResistance The resistivity is out of range low.
SC040 HighResistance The resistivity is out of range high.
SC112 UnableTo-StartPrinterModule The analyzer can not start the printer module.
SC113 UnableTo-StartRs232Module The analyzer can not start the RS-232 module.
SC116 UnableTo-ReadDataLog The analyzer can not read the data log.
SC117 UnableTo-WriteToDataLog The analyzer can not write to the data log.
SC128 UvLampMonitorFailed The UV lamp monitor has failed.
English 43