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Sounds
Problems What to do
Display Window
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.
The fan can be heard when
it is very cold outside.
The fan may run to prevent freezing.
There is a buzzing, beeping
or humming noise emitting
from the unit.
This noise is a normal function of the unit.
The valves that control the water ow through the unit
move during operation and also when the unit is not
heating water.
Loud rumbling noise on
start up or during operation
emitting from the unit or vent
system.
The unit may need adjustments done for installations
higher than 2000ft above sea level or for longer
vent runs. Please contact your installer or Noritz to
verify the unit dip switches are set correctly for your
installation.
Optional Remote Controller
Problems What to do
Display Window
The light on the power
button does not come on.
Has there been a power failure?
Is the power connected properly?
The water temperature changes
after a power failure or when
the power is disconnected.
The temperature setting and the ow meter alarm
setting may both need to be reset after a power
outage.
The plastic on the surface
or buttons of the remote
controller has torn,
peeled, or air bubbles
inside.
The surface of the remote controller is afxed with a
protective sheet (to prevent surface scratching, etc.) at
time of shipment. This sheet can be removed or left as it
is. When leaving the protective sheet on, areas frequently
touched may tear or peel. However, the remote controller
will not malfunction from water entering such torn or
peeled areas. To restore the appearance of the remote
controller surface, simply remove the protective sheet.
Troubleshooting-3
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