A Rheem RTG-70DVLN-1 tankless water heater in a Forney home stopped producing hot water and was flashing Error Code 11 — Rheem’s ignition failure indicator. The unit was approximately five years old and out of warranty.
The technician inspected the unit and cleaned the igniter as a first step, then called Rheem tech support directly with the unit on hand. The diagnosis came back confirming the igniter coil itself had failed — beyond what cleaning could resolve. The heat exchanger and other components were intact.
The homeowner is sourcing the replacement coil and will contact us to return for the install once the part arrives.
For Rheem tankless repairs and diagnostics in Forney, our local team works with manufacturer tech support to get the right diagnosis before recommending parts. See our water heater repair services.
