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Is the GreenTone gas detector indicating that the power voltage is below 17V? ? ? ?

2019-11-10View Original

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Hello, teachers. I have a question. Our equipment is equipped with 2 GreenTech gas detectors, one for CH4 and one for CO. A relay is used to control the alarm lights (220V LED, 8W) as well as 2 fans (220V, 180W). There is also a manual fan switch connected to the relay’s trigger point. Test the CH4 detector with a lighter; it should give a normal alarm, activating the alarm light and the fan. When the manual fan switch is turned on, the fan starts to operate. When the fan switch is turned off, after about 2 seconds, one of the CH4 detectors displays an F6 error message. According to the manual, this occurs when the power voltage is below 17V, and in such cases the detector restarts automatically. This happens every time the fan switch is turned on manually. The other CO detector is fine. I don’t know what’s going on here? ? ? ? ?

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