I am not too familiar w/ the Biolab 4400. Got a call that there was a high teperature alarm. Incoming water was 78'F. The operators manual is terrible at best, one page of troubleshooting and temperature isn't on it. I'm assuming the is a temp sensor...where is it? near the pre R.O. sediment filter? Any help is appreciated
You are correct - the temperature sensor is the feed water condo cell located by the sediment filter. We only get 3 - 4 years at best out of this sensor and keep one on hand as they tend to drift high (and then out of range) when they start to fail.
have you confirmed your water temperature. I recently had to shut off my hot water to the mixing valve because mixing valves don't work that well when you get different incoming temperatures and or PSI. I could keep adjusting the mixing valve but I would still be
wondering would it spike hi or alarm over the weekend. I shouldn't need to turn the hot water back on until oct or November. Good Luck SK8
We have 5 of the 4400's with the oldest being 9 years old. It had a sensor fail about 6 months ago. In the front panel set up menu, you can adjust the alarm set point in order to keep running while you wait for the new sensor.
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Thanks for the info. I gave myself aa quick how-to at 4a.m., verified the temp was 78'F, then adjusted the limit so it would run. I did look on marcor's site, found a newer manual for the 4400, it has a better troubleshooting section. Guess its time to spend the company's money on some sensors
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