TR50 - User Guide 77
7.3 Error Code
7.3.1 Error Code With Display
In case of any sensor failure alarm for TR50-5D and TR50-3D, the display will
show the sensor name and Err, until the user change it manually. For example, in
case of PM2.5 sensor failure, the display will show the error code as Err
PM2.5
. If
more than one sensor fails, the display will switch among those failure sensors.
The below figure indicates the Error Code for Color mode and Neutral Mode.
• Color Mode: Indicates Red LED ring with Error Code.
Temperature and humidity deviation is too
large, the value is too high or low.
Check whether the environmental factors
surrounding the IAQ Sensor have any influence,
such as direct sunlight, close to the heating or air
conditioning air outlets, etc.
Temperature and humidity deviation is too
large; value does not change for a long
time.
The sensor can be powered off and back on to see
if the reading returns to normal. Contact the dealer
or manufacturer if the sensor value cannot be
recovered.
Communication interruption RS-485
(MODBUS RTU)
Check if the power supply is normal and the RS-
485 terminal is loose. Check whether the RS-485
communication line is accidentally cut. Check for
an inductive load with electromagnetic
interference near the equipment or RS-485
communication line, such as a water pump.
RS-485/Sylk
TM
Bus communication
abnormal
Check the slide switch is in correct position, check
the DIP switch protocol is also correct.
LCD doesn't display any information
Check the power supply is normal, check the device
SKU is LCD display modes.
LCD display 9999 Check the sensor value is more than 9999.
LCD display Err. Check the sensor is working correct.
LED ring dark Check the power supply is normal
LED ring blink Check the sensor is working correct.
Touch button no any feedback
Check the touch area is clean and dry. Check the
finger is dry and no any ESD risk.
Noise or smell or fire from device Check the power supply is normal.
Device reboot automatic
Check the software revision is updated, check the
Sylk
TM
Bus load is normal.
No TVOC and PM sensor data
Check the device SKU only have Temperature
Humidity and CO
2
.
Fault Condition Troubleshooting
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