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Old 08-17-2016, 04:26 PM   #11
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i would guess that yours also has the black rubber " water saver " in the top too - a very easy fix to take out and try - will allow more water to flow
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Old 08-17-2016, 08:32 PM   #12
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Aargh. Our first time out and no hot water at all
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Old 08-17-2016, 09:16 PM   #13
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probably a little different from mine but still should work the same/ propane on , heater switch on , ect . and from another post and this happened to mine alsoNumber one problem is black vent tube gets plugged remove it carefully and make sure nothing is in it. Also take tooth pick or pipe cleaner and clean out tube connection at pressure switch.
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Old 08-19-2016, 08:15 PM   #14
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Isata 5 tankless water heater

Thanks, all, for your helpful comments. So here's what we think happened and what we did. The pressure sensor that senses whether the exhaust fan is on was not working. Tried to clean out the atmospheric sense port but that didn't work. Was able to get how heater to turn on by bypassing the sensor. Will remove sensor and see if I can clean it and check to see if that does it. If not, will have to replace the part. When showering, hot water cut out after a few minutes. ?high temp cut off relay? Will try to track down after fixing the pressure sensor.
Also, was surprised to find out that the water level sensor is not analog....only has a few set points giving levels. When it hits 1/3, that was the last warning before going empty. The sensor for "full" level fell off the tank. What should I use to glue it back onto the tank?
Any help is welcome!
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Old 08-20-2016, 09:28 AM   #15
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Like most of us do it yourselfers - the more you think about - read about - research how something is supposed to work , we usually get it figured out . For these tankless water heaters the biggest problem I think is just getting more flow through the the hot side ( for mine it was turning down the modulater valve , taking all out of the shower head and water valve that is meant to increase water pressure ) We only use the hot water side now and it works great and just stays warm ( the high temp cut off relay is not a problem now )
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Old 09-09-2016, 06:25 PM   #16
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Removed the water restrictor on our last outing and seems to be working good now. Thank you for the suggestion.
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