Finnex HMH Heater - Error Code EE2 wont go away!

[jquigley524]

Brand new titanium heater got delivered yesterday. Put it in the tank, turned it on and seemed to be working fine. I walked away and a few minutes later hear this annoying high pitched beeping coming from the controller. Error code EE2 showing which would mean the heater is not submerged...but it is.... have tried resetting it 37 times and still no go. left it unplugged and out of the tank all day today, put back and BOOM error code EE2 right off the bat. Bad unit or am i doing something wrong?

 

[Idoc]

I don't think you are doing anything wrong. Heaters are pretty basic for setup....just like you did turn on an put in the water, lol. I would definitely get ahold of the manufacturer for a replacement.

 

[jquigley524]

I don't think you are doing anything wrong. Heaters are pretty basic for setup....just like you did turn on an put in the water, lol. I would definitely get ahold of the manufacturer for a replacement.

Was talking to a rep at Finnex and had me go through a few steps and still wouldn’t work. Put an old heater in the tank just to get the temp climbing while I ordered a new one and miraculously the finnex started to work an hour or so later. Still might send it back.

 

[Idoc]

Was talking to a rep at Finnex and had me go through a few steps and still wouldn’t work. Put an old heater in the tank just to get the temp climbing while I ordered a new one and miraculously the finnex started to work an hour or so later. Still might send it back.

Yep, I'd send it back, for sure! That's not something you want failing.

 

[MoReefSafe]

I’m having the same issue. Bought 2 new Finnex heaters with controllers. Just put them in my tank for the first time and they both display EE2 and deliver an annoying constant high-pitched alarm as soon as I plug them in. Both the heater and the temp sensor are completely submerged, yet the EE2 error and the alarm will not go away! And they are BOTH brand new right out of the box. Uggh.

 

[MoReefSafe]

Well, I had an idea. I thought maybe the underwater sensor used an electrical signal to detect if it was underwater. Since I had just filled my tank with RODI water and wanted to raise the temp before adding salt, there were no ions in the water to conduct the electrical signal. So I added a half cup of salt near the heaters in the sump. And voilá! They worked as soon as I plugged them in.

 

[jimo]

Well, I had an idea. I thought maybe the underwater sensor used an electrical signal to detect if it was underwater. Since I had just filled my tank with RODI water and wanted to raise the temp before adding salt, there were no ions in the water to conduct the electrical signal. So I added a half cup of salt near the heaters in the sump. And voilá! They worked as soon as I plugged them in.

Mo... I had the same problem, testing them with just water. So I added salt (table salt) to the water in my sink, and got them to work. It's crazy that the Finnex instructions don't explain this. Thank you!!!

 

[jimo]

Mo... I had the same problem, testing them with just water. So I added salt (table salt) to the water in my sink, and got them to work. It's crazy that the Finnex instructions don't explain this. Thank you!!!

...and now they seem to work in fresh water. Strange... like they had to be broken in!

 

[gia]

Well, I had an idea. I thought maybe the underwater sensor used an electrical signal to detect if it was underwater. Since I had just filled my tank with RODI water and wanted to raise the temp before adding salt, there were no ions in the water to conduct the electrical signal. So I added a half cup of salt near the heaters in the sump. And voilá! They worked as soon as I plugged them in.

I just tried that and it worked! Thanks!

 

[bryanr]

Had the same issue, added a little salt to the rodi I was warming up as you suggested and poof works fine now. Thank you!

 

[bryanr]

Well I thought I had this solved by mixing up the salt with the RODI. I had went ahead and mixed the salt in and ensured the sensors had no way of coming over the water level. I went back to the basement about 30 minutes later to check the temperature it was alarming again, It's actually the titanium tube that alarms all sensors are underwater. Glad I had an old 800w Finnex titanium tube (I swap them out every year or two and keep them as a spare) so my tank build could go on and proved the controller works fine.