IKONIC Tankless Water Heater Service Manual
66
NOTIFICATION T115 AND ERROR T116
ERROR CODE DIAGNOSTICS
T115 EXPLANATION
Pump schedule disable - No time received.
If the user interface does not receive the scheduled time
to operate the pump when a schedule has been set (if in-
stalled with a recirculation line) the water heater displays
the “T115” error code) on the user interface.
Diagnostic check
• Set to "SCHEDULE" in “Recirc Pump Mode”.
NOTICE: If this error code is displayed on the LCD,
recheck the scheduled time setting in the EcoNet app.
To set the schedule mode for recirculation on this unit,
please refer to section “Schedule mode”.
T116 EXPLANATION
Manifold unit fault.
If the water heaters are installed in a manifold and some
units in the manifold cannot communicate to the man-
ager unit, the water heater displays the “T116” error code
on the user interface of manager unit.
Diagnostic check
• Connecting cable between water heaters.
Check method
Remove and reinsert the connecting cable between wa-
ter heaters.
If the "T116" appears again, switch the communication
cables with another water heater.
> If the "T116" appears on a different unit after switching
the communication cables, replace the communication
cable.
> If the "T116" appears on the same unit after switch-
ing the communication cables, replace the user interface
and/or control board.
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