User Manual

TUV (1/03)
REV. 0.2
6.3 ANALYZER ERROR CODES
The following are the error codes that may be indicated on the analyzer. The Analyzer switching to the
Error Code page and placing an X beside the fault will indicate the particular problem. During this time
the analyzer is not taking readings although the Sensor/Sampler may be operating properly. After
correcting a fault, press the “alarm” key on the analyzer to restart the system. The system will ignore
faults for the first 2- 5 minutes in order to allow the system to regain proper operation. Listed below are
the error codes, a brief description of the faults and the action required in the order of most probability.
Error Code Description of Fault/Steps to correct Problem
COMM ERROR An error has occurred in the RS-485 serial communication between the
Sensor/Sampler and the Analyzer.
1. Reset system by pressing “alarm” on analyzer.
2. Check connections and continuity of serial interconnection cable.
3. Replace RS485 port in Analyzer.
4. Replace CPU module in Sensor/Sampler.
5. Replace Analyzer.
6. Check sensor power switch.
NO FLOW The Sensor/Sampler has detected a lack of flow of sample effluent.
1. Check that Pump Switch is ON.
2. Check T-strainer and source line strainer for blockage.
3. Check Flow Switch for blockage.
4. Check if air is present in tubing. Reset power at power supply module.
WARM-UP TIME OUT The Sensor Module failed to warm-up.
1. If ambient temperature is cold and Sensor/Sampler was just powered
up, allow 20 minutes with Sensor/Sampler enclosure closed. Press
“alarm” on analyzer to restart system.
2. Check cabinet heater for proper setting (50°F) and operation.
Replace if defective.
3. If CPU module indicates that heater is on continuously, replace
Sensor Module.
100% WATER OUT The Sensor/Sampler has detected a lack of flow during the last 100% T
calibration.
1. Check 100%T solution. Replace if required.
2. Check that Pump Switch is ON.
3. Check for proper operation of pump.
4. Check for proper operation of valve.
5. Check that flow sensor is operating correctly by pulling it out and tipping
it upside-down while observing the FLOW LED in the CPU module.
It should go off when upside-down.
LAMP TEMPERATURE The Sensor Module failed to maintain adequate temperature.
LOW 1. If Sensor/Sampler was subjected to extreme cold temperatures, below
-60°C, this problem may occur. Wait until temperature is above -50°C
and then restart system.
2. Refer to the suggestions above under “WARM-UP TIME OUT”.
4-20mA LINE IS The 4-20mA line is not complete.
DEFECTIVE 1. Check connections at both ends of 4-20mA line.
2. Check for a break in 4-20mA line.
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