Rheem IKONIC RTGH-S11i Training And Service Manual page 64

IKONIC Tankless Water Heater Service Manual
ERROR CODE DIAGNOSTICS
2.2 ERROR CODE LIST
T111 ERROR CODE
Service reminder alert
If this water heater is set the service alert and the life
cycle of water heater is reached the set time, the water
heater displays the " T111 " error code on the Liquid
Crystal Display (LCD) on the user interface.
This is a warning code and the unit will eventually shut
down to protect unit.
To set this service alert, refer to section 1.7.5
"Setting service alert".
Diagnostic check items
• User interface.
Hot Water
Service Valve
Drain Hose
(hot water)
Utility Pump
5 - Gallon Bucket
64
Check method
If the LCD displays "T111" error code, the unit must be
drained and flushed.
NOTE: Flushing instructions utilize a sub-
mersible utility pump. (Provided with the
Rheem/Ruud Tankless Flush kit RTG20124).
After flush procedure has been done. Clear
current alarm. Section 1.7.
Drain Hose
(cold water)
Cold Water
Service Valve