Question about Rheem EcoSense by 7.4 GPM Tankless Water Heater Natural Gas High Altitude
Before calling service technician, open following link for Rheem tankless resources, including error codes and general help for homeowner.
C7 76 is communication fault with remote control.
Remote is connected to tankless with a wire.
Usually you remove wires from terminals on tankless, and see if tankless functionality returns.
If tankless works fine, then it will heat to default 120 degrees.
Clean terminals and put them back.
If problem returns, then problem is then narrowed to bad wire, bad remote control, or problem inside tankless.
Since new remote control costs about $99, it might be cheaper to have service technician review the problem and catch up with maintenance.
Error codes are considered starting points for troubleshoot since error can have different soultion than same error on another unit.
Read manual for advisories, error codes, and required maintenance.
For example tankless might require monthly water filter cleaning, and yearly de-liming, and yearly burner cleaning.
Your service technician can advise what is typical for your region, since altitude, incoming water temperature, quality of water, water pressure, venting, are factors for maintaining water heater.
Upvote the help.
And take advantage of fixya expert assistance live.
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Fixya is always less expensive than a service call.
Posted on May 26, 2011
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Posted on Jan 02, 2017
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