Bill Schleusner
New Member
I have a Rheem TWH that's less than 6 months old. I had it installed professionally. I also have a recirc pump hooked up with a timer and aquastadt.
The WH is now throwing error code 12s all day long. This just started a week ago. I can't get the WH to stop throwing error codes. If the recirc pump runs too long, it throws an error code, if it sits all night turned off and kicks on in the morning, error code.
https://s3.amazonaws.com/WebPartners/ProductDocuments/C5D97959-73D7-4482-9242-83DCE78310C8.pdf
Spoke with reps from Rheem and they weren't all that useful other than to request static and dynamic gas pressure readings. I have a plumber coming so he can do readings, but I don't think that's the issue. Why would the gas pressure change in the last week?
I'm asking this learned group because Rheem doesn't have a "contracting plumber" in Grand Junction and most of the plumbers here are not familiar with tankless units.
I've done all the diagnostic checks suggested by Rheem and they all check out; voltage to the white and blue molex, flame rod status, etc. The only checks left are gas supply (see above), venting (it's OK) and ground.
If anyone has any ideas and/or suggestions I'm all ears. I'm at my wits end with this heater.
Thanks
Bill
The WH is now throwing error code 12s all day long. This just started a week ago. I can't get the WH to stop throwing error codes. If the recirc pump runs too long, it throws an error code, if it sits all night turned off and kicks on in the morning, error code.
https://s3.amazonaws.com/WebPartners/ProductDocuments/C5D97959-73D7-4482-9242-83DCE78310C8.pdf
Spoke with reps from Rheem and they weren't all that useful other than to request static and dynamic gas pressure readings. I have a plumber coming so he can do readings, but I don't think that's the issue. Why would the gas pressure change in the last week?
I'm asking this learned group because Rheem doesn't have a "contracting plumber" in Grand Junction and most of the plumbers here are not familiar with tankless units.
I've done all the diagnostic checks suggested by Rheem and they all check out; voltage to the white and blue molex, flame rod status, etc. The only checks left are gas supply (see above), venting (it's OK) and ground.
If anyone has any ideas and/or suggestions I'm all ears. I'm at my wits end with this heater.
Thanks
Bill