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Old 12-04-2023, 08:31 AM   #1
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Tankless water heater

Have 2017 precept mh and noticed last night that the tankless water heater came on for a few seconds and then off. Plugged in to shore power heaters off unit is winterized lp is on. Any ideas
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Old 12-04-2023, 08:55 AM   #2
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I thought I read someplace that some tankless heaters have a freeze protection circuit built in and will come on if lp is on.
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Old 12-04-2023, 08:58 AM   #3
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I thought I read someplace that some tankless heaters have a freeze protection circuit built in and will come on if lp is on.
Interesting,Thanks I will check that out
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Old 12-04-2023, 01:43 PM   #4
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Girhard water heater with winter use freeze protection. On at 35F off at 48F
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Old 12-04-2023, 03:32 PM   #5
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Thanks
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Old 12-04-2023, 04:15 PM   #6
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According to the manual on my Girard Mod 2, it should only operate the freeze protection cycle if the unit is turned on, so you may want to double check you have the WH turned off.
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Old 12-04-2023, 06:32 PM   #7
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If you winterized it, part of doing that should be to turn off the switch outside.
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Old 12-04-2023, 10:23 PM   #8
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If you winterized it, part of doing that should be to turn off the switch outside.
On our 2015 Seneca, the switch is on the INSIDE of unit... pull the cover and you will find the switch. Make darn sure that you have all of the water out of the heat exchanger, or you will be buying a new one in spring.

We have travelled in our Seneca in winter nights down to +5F with our Girard running, the freeze protection system is very good.
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Old 12-04-2023, 11:14 PM   #9
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On our 2015 Seneca, the switch is on the INSIDE of unit... pull the cover and you will find the switch. Make darn sure that you have all of the water out of the heat exchanger, or you will be buying a new one in spring.

We have travelled in our Seneca in winter nights down to +5F with our Girard running, the freeze protection system is very good.
I was meaning outside of RV, not outside of the heater.
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Old 12-06-2023, 07:38 AM   #10
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Thanks to all will be heading south soon so I should not have to worry about it
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Old 12-25-2023, 07:13 AM   #11
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I want one. But not sure about it because I am not sure if I can make sure its properly winterized and all water gone. Otherwise its on my bucket list.
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Old 12-25-2023, 08:11 AM   #12
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Tankless

After reading more about the tankless water heater and cold weather it is doing what all have said. Now in warmer weather enjoying it.
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Old 12-25-2023, 08:49 AM   #13
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I want one. But not sure about it because I am not sure if I can make sure its properly winterized and all water gone. Otherwise its on my bucket list.
If you do the rv antifreeze method, then no worries about getting all the water out as the antifreeze replaces any water in the system. Unlike a tanked water heater that is drained and bypassed when winterizing, the tankless doesn't hold that much liquid so it is not bypassed when using the antifreeze solution.
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