Intermittent Failed Bulb Indication on APEV-8E UV Disinfection Unit

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Old 06-22-16, 01:48 PM
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Intermittent Failed Bulb Indication on APEV-8E UV Disinfection Unit

This unit is about 3 years old. I replaced the quartz sleeve and bulb about 6mos. ago. Last week I had a solid red light and alarm, indicating the bulb is not lit. I replaced the bulb and reset the warning but now I get the warning intermittently. I'll have a green light for a few minutes to several hours and then the red light and alarm will come on. This will last for a few seconds to a few minutes and then it will go back to green.

Any thoughts on what to check? Could it be a bad ballast? Is there a way to check the bulb? I know I can't look at it directly.

Thanks.
 
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Old 06-22-16, 05:34 PM
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Could be the ballast or the transformer in not delivery of the correct amps.
 
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Old 06-26-16, 02:43 PM
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If I lift the bulb out a little, I can see it glowing, even when the alarm is going off. So it doesn't seem power to the bulb is the problem. How does the unit detect if the bulb is working? Maybe that is the issue?
 
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