Noritz NH199-DV Manuel D'information De L'utilisateur page 19

Troubleshooting-1
Unit attempts to ignite but fails.
Hot water is not available
when a fixture is opened.
Setting temperature cannot rise.
The light on the power button
does not come on.
The panel cannot be used.
Combustion indicator is lit even
when the Power button is set to Off.
Combustion indicator is lit even
when the heating is not being used.
The plastic on the surface or buttons
of the remote controller has torn,
peeled, or air bubbles inside.
Initial Operation
• Perform operation again after setting the Power On/Off button to
Off and then back to On. There may be air in the gas line.
• Have a professional check the gas supply pressure.
Temperature
• Is the gas valve, return valve and supply valve fully open?
• Is the gas being cut off by the gas meter?
(Can other gas devices such as stoves be used?)
• (For LP) Is there enough gas in the tank?
(Can other gas devices such as stoves be used?)
• Is the water drain valve filter clogged with debris? (
• Is the pressure gauge reading normal? (
• Is the power button turned on?
• The hot water of the indirect tank may have been fully used.
Wait for several minutes until the water in the tank becomes hot.
• See the operation manual of the indirect tank or heating system.
• Can the sound of the pump be heard? If not, there may be
a malfunction. Contact your installer or a qualified service
technician.
• Is the maximum temperature setting of PRIORITY 1
appropriate. (
Operation Panel
• Has there been a power failure?
• Is the power connected properly?
• There is a possibility that the unit has malfunctioned.
Contact your installer or a qualified service technician.
• The pump automatically operates for combustion to
prevent freezing.
• The surface of the remote controller is affixed 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.
p.14)
p.18)
p.17)
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