DSI fault

[brianseay1]

I keep getting a DSI fault light coming on when using my waterheater. It will heat up the water just fine on electric, gas or both. I have put the switch on electric only and get the fault, I can put in on gas and get the fault. I can put it on both together and get the fault. Does not matter how I run in I still get the fault light to come on. The water still heats up, but after awhile it does start to cool down. It sometimes takes the light a while to come on. Anyone got any suggestions on what to look for ?????

[Sooner_Schooner]

I just ordered the ECO/T-Stat kit through Amazon for $16 with free freight. It looks very simple to replace and if it works, we have saved money by doing it ourselves. Ours was part #91547.

[Dutch_12078]

brianseay1 wrote:
After finally getting to sit down this evening and read over the manual, I think I have figured out my problem. My flame is not adjusted right. I am going to adjust the air shutter on it tomorrow and see what that does. Hopefully it is going to be this simple. Thanks for the link to the manual, it was a big help.

A misadjusted air shutter does not account for the fault light coming on when using electric heat. A faulty thermostat causing the ECO to kick out covers both modes.

[brianseay1]

After finally getting to sit down this evening and read over the manual, I think I have figured out my problem. My flame is not adjusted right. I am going to adjust the air shutter on it tomorrow and see what that does. Hopefully it is going to be this simple. Thanks for the link to the manual, it was a big help.

[brianseay1]

Dutch_12078 wrote:

brianseay wrote:

2ndhom wrote:
Wonder if the OP ever resolved his WH problem??

:h :@

No, I have not resolved the issue yet. Still looking for answers.

Have you replaced the thermostat?

No, I haven't replaced the thermostat. have not been able to locate it yet.

[drcarr57]

ECO is a normally closed safety temperature switch that
sends voltage to solenoid valve. The switch opens if
the water temperature exceeds 180°F
Here is a link to a manual for an Atwood wh. Atwood Manual

The ECo and thermostat cost about $16.00. Mine as doing the same thing, replaced eco and thermostat solved problem. (both come together on same board)

[Sooner_Schooner]

I am currently having the same issue so I am monitoring your post. My fault light also comes on in the electric mode. What is a ECO?

[Dutch_12078]

brianseay wrote:

2ndhom wrote:
Wonder if the OP ever resolved his WH problem??

:h :@

No, I have not resolved the issue yet. Still looking for answers.

Have you replaced the thermostat?

[brianseay]

2ndhom wrote:
Wonder if the OP ever resolved his WH problem??

:h :@

No, I have not resolved the issue yet. Still looking for answers.

[2ndhom]

Wonder if the OP ever resolved his WH problem??

:h :@

[enblethen]

The thermostat and the ECO are next to one another. There is also a thermal fuse hiden behind some tubing adjacent to the ECO and thermostat. This is on Atwoods.

[brianseay1]

2ndhom wrote:
Water heaters get too hot when the thermostat does not shut off at it's factory set number. If you know where the stat is .... remove it, look at it's condition and/or replace. Something is not allowing the stat to open and close correctly. Keep us in tune.

Trying to figure out where the stat is located. I can barely get to the water heater itself. And from the outside I can see the control board, gas fixtures and such. I can see the plug for the Eco Stat. but nothing else. I have two pictures to post,but can't get them to upload.

[2ndhom]

Water heaters get too hot when the thermostat does not shut off at it's factory set number. If you know where the stat is .... remove it, look at it's condition and/or replace. Something is not allowing the stat to open and close correctly. Keep us in tune.

[brianseay1]

Can't seem to post any pics of the water heater.

[brianseay1]

After doing some monitoring of the system, here is what I think I have found. When the water heater kicks on it will cycle properly using propane for a few cycles. I noticed water starting to come out of the pressure relief valve. Just a small amount of water more like a small drip. Then the dsi light comes on. It will even come on when just using the electric side and not the propane side. I replaced the motherboard and thought I had fixed it. No such luck. It seems like the water is getting scolding hot, cannot find anywhere to turn the temp. down. As one other suggestion earlier was that it could be getting to hot, i think it could be. But how do you fix that? I am going to post a couple of pics to show what I have. Hope this will help you all give me some ideas.