24
Troubleshooting
Problem
Possible Cause
Action
Remote Controller
The power ON/OFF indicator
does not light up
There has been a power failure.
Wait for power to be restored.
The power plug is disconnected.
Check the power plug.
The clock display shows
"- : - -"
If the time is not displayed on the clock, either a power
failure has occured or power was disconnected resulting
in the display showing "- : - -".
Set the clock again.
P8
The flow meter alarm does not
sound or it sounds before the
bathtub has been filled to the
set amount.
The flow meter alarm is set to sound when hot water is
continuously discharged for the set volume of water.
If hot water is used for other fixtures while filling the bath
tub, the alarm will sound before the tub is full.
An error has not occured.
If mixing valves are used, or if cold water is mixed with
hot water at the fixture, the tub will fill more than the
setting of the flow meter alarm.
An error has not occured.
The setting cannot be changed
when a button is pressed.
The remote controller is locked.
While the remote controller is locked these buttons
cannot be used.
Unlock the remote controller.
P14
[For recirculation systems]
Flame symbol < > lights up or
goes out
During recirculation operation, the water heater will turn
on and off to keep the hot water pipes up to temperature.
An error has not occured.
This section only covers issues with the remote controller.
To diagnose issues with the water heater, consult the Owner’s Guide supplied with the water heater.