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Old 04-01-2021, 05:42 PM   #1
2 Rivet Member
 
2021 25' Globetrotter
McMinnville , Oregon
Join Date: Dec 2015
Posts: 24
Tankless heater alarm

Several times recently I have heard an alarm from the tankless water heater control panel while I am showering. It is a series of 3 short beeps, repeating approx 7 times. It always stops before I finish my shower so I cannot see any warning light when I check the panel. Any ideas on what this alarm is indicating? 2021 GT 25 FBT
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Old 04-01-2021, 06:00 PM   #2
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2021 25' International
Winder , Georgia
Join Date: Sep 2020
Posts: 325
Do you turn the water off at the shower head and/ or turn the water almost off?
Either way you would have a minimal flow of water. The tankless heater has to detect a certain amount of flow in order to fire. If not enough flow is detected it will throw a ‘low flow’ alarm. I had this happen while showering and I had the water almost off. My wife was in the bathroom and saw the error code on the panel and I looked it up later. Sure enough that’s what it was.
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Old 04-02-2021, 07:57 AM   #3
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2021 25' Globetrotter
McMinnville , Oregon
Join Date: Dec 2015
Posts: 24
Each time the alarm has sounded the shower has been at full flow. I typically take a "navy shower" in the trailer and the alarm has been in the rinse phase but yesterday it also sounded briefly in the initial soaping phase.
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