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Hach 6120118 Error Codes, Warnings, Troubleshooting the pH or ORP Sensor, Warning Codes

Models: 6120118

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Section 7 Troubleshooting

Section 7 Troubleshooting

7.1 Error Codes

When a sensor is experiencing an error condition, the sensor reading on

the measurement screen will flash and all relays and analog outputs associated with this sensor will be held. The following conditions will cause the sensor reading to flash:

•Sensor calibration

•Relay timer washing cycle

•Loss of communication

Highlight the Sensor Diag menu and press ENTER. Highlight Errors and press ENTER to determine the cause of the error. Errors are defined in Table 6.

Table 6 Error Codes

Displayed Error	Definition	Resolution

ADC FAILURE	System measurement fails	Contact Technical Consulting Services.

7.2 Warnings

A sensor warning will leave all menus, relays, and outputs functioning normally, but will cause a warning icon to flash on the right side of the display. Highlight the Sensor Diag menu and press ENTER to determine the cause of the warning.

A warning may be used to trigger a relay and users can set warning levels to define the severity of the warning. Warnings are defined in Table 7.

Table 7 Warning Codes

	Displayed Warning	Definition	Resolution

	PROBE OUT RANGE	Measured pH/ORP exceeds the expected value range.	Contact Technical Consulting Services.

	TEMP OUT RANGE	Measured temperature exceeds the expected value	Contact Technical Consulting Services.
	TEMP OUT RANGE	range.	Contact Technical Consulting Services.
		range.

	FLASH FAILURE	System flash memory write has failed.	Contact Technical Consulting Services.

	REF ELECTRODE	Standard Electrode is not performing within the required	Contact Technical Consulting Services.
	REF ELECTRODE	specifications.	Contact Technical Consulting Services.
		specifications.

7.3 Troubleshooting the pH or ORP Sensor

Clean the sensor using the procedure described in section 6.2 on page 34 and then calibrate the sensor as shown in section 4.7 on page 25 or section 4.8 on page 29. If the measuring system cannot be calibrated after cleaning, contact Technical and Customer Service (U.S.A. only) on page 39.

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Hach 6120118 user manual Error Codes, Warnings, Troubleshooting the pH or ORP Sensor, Warning Codes

Contents

Catalog Number Digital PC sc and RC sc ¾-inch Combination pH/ORP SensorUSER MANUAL October 2005, Edition Page Table of Contents 8.1 Replacement Items, Accessories, and Reagent and Standards Table of Contents7.3 Troubleshooting the pH or ORP Sensor Section 8 Replacement Parts and AccessoriesSee Figure 1 on page 8 through Figure 4 on page Section 1 SpecificationsTable 1 Combination pH and ORP Sensor Specifications Table 2 Digital Gateway SpecificationsPage 2.1.1 Use of Hazard Information 2.1 Safety Information2.1.2 Precautionary Labels Section 2 General InformationFigure 1 Convertible Style Sensor with Flat Electrode 2.2 General Sensor InformationGeneral Information 2.2.1 Sensor Body StylesFigure 3 Insertion Style Sensor with Domed Electrode 2.4 Operating Precaution2.3 The Digital Gateway General InformationPage DANGER Installation3.1 Wiring the sc Sensor to the Digital Gateway SectionFigure 6 Wiring and Assembling the Digital Gateway InstallationFigure 5 Proper Wire Preparation and Insertion DANGER 3.2 Connecting/Wiring the Digital Gateway to the sc100 ControllerInstallation Table 3 Wiring the Digital Gateway Cat. NoInstallation 3.2.1.2 Hard-wiring the Digital Gateway to the sc100Disconnect Power InstallationTable 4 Wiring the Sensor at Terminal Block J5 Figure 8 Hard-wiring the Digital GatewayFigure 9 Installing the Connector Safety Lock 3.3 Connecting the Sensor to the sc10003.3.1 Connecting the Sensor using the Quick-connect Fittings InstallationFigure 11 Mounting the Digital Gateway 3.4 Mounting the Digital GatewayInstallation Figure 10 Digital Gateway DimensionsPage Figure 12 Front of the Controller 4.1 Using the sc100 ControllerSection 4 User Interface and Navigation Table 5 Controller Key Functions/Features7.00 pH User Interface and Navigation 4.1.1 Controller Display Features4.1.2 Important Key Presses 2 7.00 pH4.2.1.2 Using the Menu Windows 4.2 Using the sc1000 Controller4.2.1 Display Features 4.2.1.1 Using the Pop-up ToolbarUser Interface and Navigation 4.2.1.3 Navigating the Menu WindowsKeypad User Interface and NavigationFigure 16 Changing a Menu Item Figure 19 Message window COMMUNICATION ERRORUser Interface and Navigation List BoxSection 5 Operation 5.1 Sensor Setup5.3 Sensor Diagnostics Menu for pH and ORP 5.4 pH Sensor Setup MenuOperation 5.4 pH Sensor Setup Menu continuedSELECT SENSOR if more than one sensor is attached 5.5 ORP Sensor Setup MenuOperation Operation 5.6 pH Calibration5.6.1 One Point Automatic Calibration 5.6.2 Two Point Automatic Calibration5.6.4 Two Point Manual Calibration Operation 5.6.3 One Point Manual CalibrationOperation 5.7 ORP Calibration5.8 Concurrent Calibration of Two Sensors for pH and ORP 5.7.1 One-point Manual CalibrationOperation 5.9 Adjusting the TemperaturePage DANGER Section 6 Maintenance6.1 Maintenance Schedule DANGERMaintenance 6.2 Cleaning the Sensor7.2 Warnings Section 7 Troubleshooting7.1 Error Codes 7.3 Troubleshooting the pH or ORP SensorPage 8.1 Replacement Items, Accessories, and Reagent and Standards Section 8 Replacement Parts and AccessoriesPage Information Required Section 9 How to OrderTechnical and Customer Service U.S.A. only U.S.A. CustomersIn Latin America, the Caribbean, the Far East Section 10 Repair ServiceIn the United States In CanadaLimitation of Remedies Section 11 Limited WarrantyLimitations Page Emissions Product SafetySection 12 Compliance Information ImmunityCompliance Information Canadian Interference-causing Equipment Regulation, IECS-003, Class AFCC PART 15, Class “A” Limits Table 8 Sensor Modbus Registers Appendix A Modbus Register InformationTable 8 Sensor Modbus Registers Modbus Register Informationwhere Appendix B General pH InformationB.1 pH Measurement Theory Mode B.2 PID Controller BasicsGeneral pH Information PhaseDerivative General pH InformationIntegral Page Index