Noritz N-069M-DV-CA Guide De L'utilisateur Et Manuel D'installation page 98

Troubleshooting-2
The water is not hot enough.
The water is cold when only a
single fixture is open.
Fluctuations in hot water
temperatures.
The amount of hot water at a
certain fixture is not constant.
The amount of hot water in the tub
is less/more than the set amount.
The flow meter alarm does not
sound even when filled to the set
amount.
Amount of hot water available
has decreased over time.
22
Temperature
• Are the gas and water supply valves fully open?
• Is the water temperature setting appropriate?
• If the amount of hot water required is very high, it is
possible for the temperature to be lower than the temp-
erature set on the remote controller.
Decrease the amount of water passing through the unit
and the temperature should stabilize.
• The unit will not heat the water if the flow rate is less than
2.7L (0.7 gallons) per minute.
Open the fixture more or open other fixtures so that a greater
flow passes through the unit, and the unit should begin
heating again.
• Set water temperature at 48°F(118°F) to 50°F(122°F). This
will allow you to use a higher flow of hot water thus meeting
the minimum flow requirement of 2.7L/mon. (0.7 gpm.)
• Clean the water filter of any debris (
Amount of Hot Water
• When hot water is demanded at other fixtures, the amount
available may be reduced. The maximum flow available from
this unit is 26L/min. (6.9 GPM) at a 7°C (45°F) temp. rise.
• Pressure fluctuations and other plumbing conditions can
cause the temperature and pressure at a fixture to be
unstable, but it should stabilize after a short time.
• There are some types of hot water taps that discharge large
volumes of hot water initially, but stabilize after time.
• To keep the temperature stable, the heater limits the
amount of water that can flow through it to a small
amount initially, but the amount increases over time.
• When hot water is used for other fixtures while filling the
bath tub, the tub will not fill as much.
• If there is water in the tub already, or when filling is stopped
and resumed, the tub will fill more.
• The flow meter alarm is set to sound when hot water
is continuously discharged for the set volume of water. 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.
• Is the water drain valve filter clogged? (
( p.12 and p.13)
p.20)
p.20)