CO Level Exceeds Max Allowable Level and Peaks for Unknown
Duration
If the CO level exceeds the maximum allowed too close to the end of the test
then the test is failed. This can occur if there is a build up of CO levels towards
the end of the test or the appliance fires up late on in the test or the test is
stopped too early. The test should be repeated if this occurs.
The result code is: FAILED (2)
CO Level Does Not Start Close to Zero
It is important that the Sprint Pro is undertakes the zeroing process in clean
air at switch-on. Failure to do so will invalidate the test result. BS 7967-2 also
requires that the room is well ventilated prior to starting the test. However it
is possible that there may be a residual background CO level (eg: due to traffic
fumes). The Sprint Pro will display a pop-up box prior to starting the test if the
CO level is more than 3ppm.