27
Sprint eVo
1
/eVo
2
/eVo
3
Troubleshooting guide
Symptom Cause Recommended User Action:
Auto-zero failed Sensors exposed to
gas or faulty.
Switch off and on, ensuring
you zero in clean air and sen-
sors are purged. If unit contin-
ues to fail auto-zero, return for
service.
Alarm activates in CO
Room safety test
CO is reading greater
than 30ppm or 90ppm
(cooker).
Dependant on safety proce-
dures.
Cannot remember the
supervisor password.
Forgotten Supervisor password prevents
alteration of report header
which identifies owner of the
instrument. This provides secu-
rity against theft. So there is no
method to remotely unlock the
instrument. Return to supplier-
for reset
During auto zero the
gas reading does not
stabilise.
Recovering from high
gas exposure or gas
sensor faulty.
Ensure unit is purged and allow
sensor to recover or return for
service ASAP.
Sometimes negative
gas readings are dis-
played.
Previously zeroed with
gas present.
Turn off and on and repeat
auto zero in clean outside air,
allowing time for the CO sen-
sor to recover and stabilise.
Sometimes “!>” or
“!<”isdisplayedin
place of a number.
Sensor is out of range. Contact support for advice.
Return for service if problem
persists or other failures are
observed.
Cal due date has
changed.
Time/date has been
amended.
Check current date and time
is correct. If the cal due date is
set to more than a year’s time
then return for service ASAP.
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