Manual
16
6.2 Troubleshooting
Error code
Possible cause
Indication
Possible solution
Sensor unit
Remote display
unit
Er3
Ambient temperature
exceeds measuring range
(0 … +50 °C // 32 … 122
°F)
-
“Er3” flashing
-
LED “FLT”
flashing
- buzzer makes
noise
-
“Er3” flashing
-
LED “FLT”
flashing
- buzzer makes
noise
Indications
disappear once
the ambient
temperature is
within the
measuring range
Er4
Measuring error or sensor
reached the end of its
lifetime
-
“Er4” flashing
-
LED “FLT”
flashing
- buzzer makes
noise
-
“Er3” flashing
-
LED “FLT”
flashing
- buzzer makes
noise
Unplug the power
plug from the wall
socket and plug it
in again. If this
does not help
please contact our
customer support.
Er5
Er6
EEPROM problem
-
“Er5” and “Er6”
flashing
-
LED “FLT”
flashing
- buzzer makes
noise
-
“Er5” and “Er6”
flashing
-
LED “FLT”
flashing
- buzzer makes
noise
Unplug the power
plug from the wall
socket and plug it
in again. If this
does not help
please contact our
customer support.
Er7
Internal data transfer error -
“Er7” flashing
-
LED “FLT”
flashing
- buzzer makes
noise
-
“Er7” flashing
-
LED “FLT”
flashing
- buzzer makes
noise
Unplug the power
plug from the wall
socket and plug it
in again.
If indication only
appears on remote
display unit: check
the RJ45 plug on
the communication
cable and the
RJ45 input (W).
Er8
Accuracy of the CO
2
sensor might deviate from
current CO
2
concentration
-
“Er8” flashing
-
LED “FLT”
flashing
- buzzer makes
noise
-
“Er8” flashing
-
LED “FLT”
flashing
- buzzer makes
noise
Unplug the power
plug from the wall
socket and plug it
in again. If this
does not help
please contact our
customer support.
°C / °F
Internal data transfer error -
- °C / °F flashing
Check the RJ45
plug on the
communication
cable and the
RJ45 input (W).
LED “FLT”
Mains adaptor not
connected properly
-
LED “FLT”
flashing
Unplug the power
plug from the wall
socket and plug it
in again.
7 Warranty
You can read our warranty terms in our General Business Terms which you can find here:
https://www.pce-instruments.com/english/agb
.
