Truma Aqua Go randomly comes on with CP off

[Steve Morris]

Anyone else have this happen? Several times over the past few weeks I’ve heard the water heater fire up while turned off at the Truma control panel. It seems random, sometimes days between (unless we’re not there to hear it) and once several minutes apart. 

I haven’t pulled the panel off yet, but I’m wondering if the cable might be loose at one end or the other. 

Anyone else?

[mossemi]

I haven't seen or heard of this before.  The ECO mode does fire up periodically as needed to keep the water warm.  When you mention 'control panel', are you referring to the inside panel?  My inside control panel is above the curbside bed and the wiring is accessible from the porthole in the cabinet above the cooktop.

Mossey

[Steve Morris]

1 hour ago, mossemi said:

I haven't seen or heard of this before.  The ECO mode does fire up periodically as needed to keep the water warm.  When you mention 'control panel', are you referring to the inside panel?  My inside control panel is above the curbside bed and the wiring is accessible from the porthole in the cabinet above the cooktop.

Mossey

Yea, sorry, more details would have helped. 

We only turn on the Truma Aqua Go when we want hot water, usually morning and evening. We use the Comfort setting, and dial it down to about 109 degrees. All the rest of the day and night it is in the OFF position on the panel (but obviously still ON on the outside switch. 

We have the full Truma package, so our control panel is the digital Truma CP Plus that controls everything. It is mounted above the SeeLevel panel to the right of the pantry, above the rear dinette. 

What occasionally happens is the water heater fires up randomly even though it is turned off at the panel.
 

BTW, thanks again for the details on the shower and recirculating system, Mike. It is working beautifully!

Edited Thursday at 05:55 PM by Steve Morris

[Ollie-Haus]

I’ve noticed ours does the same thing. Haven’t figured it out yet other than the only way to assure it stays of is to turn off the switch under the outside cover. 

[GraniteStaters]

Was it colder than 40 degrees overnight, because a Truma will come on automatically to prevent freezing in the closed loop portion of the water heater.  

[Steve Morris]

2 minutes ago, GraniteStaters said:

Was it colder than 40 degrees overnight, because a Truma will come on automatically to prevent freezing in the closed loop portion of the water heater.  

Hmm, low 50s and high 40s was as low as I’ve seen this week. When it was in the teens, I had the antifreeze mode turned on. It’s done this during the afternoon in the 70s too.