If after two minutes the check hasn't done, Testifire XTR2 will time-out as well as test will probably be recorded as failed. The status LED will flash triple pink to signify the exam has long been unsuccessful and it is best to take away Testifire XTR2 by gently reducing it. https://testifire-fire-alarm-test89900.liberty-blog.com/34155729/the-2-minute-rule-for-testifire-fire-alarm-testing-gear