NCC300 Owner's Guide

40
Remote Controller
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 "- : - -". (
p.17)
The fan can be heard after
operation is stopped.
A motor can be heard when turning
the unit ON or OFF, when opening
orclosingaxture,oraftertheunit
has been running for a while.
• These noises indicate the proper operation of devices
which are designed to let the unit reignite more quickly,
and ensure the water temperature is stable.
Sounds
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.
• 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.
The fan can be heard when it is
very cold outside.
• The fan may run to prevent freezing.
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. ( p.22)
[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.
The water temperature changes
after a power failure or when the
power is disconnected.
The power ON/OFF indicator
does not light up.
• Has there been a power failure?
• Is the power connected properly?
• Thetemperaturesettingandtheowmeteralarmsetting
may both need to be reset after a power outage.
Troubleshooting-2