Troubleshooting - Extech Instruments CO220 User Manual

Co2 monitor and datalogger
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Troubleshooting

Meter won't power
ON
Slow response
Error Codes:
E-1
E-2
E-3
E-4
E-5
E-6
Check to see that the adaptor is properly
plugged in.
Check that the air flow channels on the
rear of the meter have clearance.
CO
sensor is
2
damaged
Humidity sensor is
damaged
Temperature sensor
is damaged
Operating
temperature is too
high
Operating
temperature is too
low
Hardware failed
Return for repair
Return for repair
Return for repair
Put the meter in typical room
temperature for 30 minutes,
if problem persists, return
for repair
Put the meter in typical room
temperature for 30 minutes,
if problem persists, return
for repair
Return for repair
13
CO220-en-US_V1.5 8/20

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