Hot Water Is Not Delivered; Maintenance Monitor List For Scale Build-Up Trouble - Noritz NR501-OD Service Manual

< Case 2. Hot water is not delivered (The user can not get hot water) >
Check the power outlet v oltage.
(Check whether the plug is connecting.)
Ye s
Chec
Ye s
Check the error code in the Display Window.
Check whether the error code "C #"
Ye s
No
Flush the Heat Exchanger.
The Procedure of Flushing the Heat Exchanger is shown page 00.
< For Users >
(C)
Basically, recommend an authorized Nortiz plumber.
or access http://support.noritz.com/ to download the procedure*.
(B)
< For professionals >
When they
to "Flushing mode" by disconnecting the "blue connector" on
the Circuit Board.
pocke t of the Front Cover or in the Installation Manual.
< Case 3. Flush the Heat Exchanger regularly (Not displayed the error code) >
Contact a service professional or download the procedure
from http://support.noritz.com/.
(C)
(B)

Maintenance Monitor List for Scale Build-up trouble

Data
Item
No.
11 First detection time of Scale Build-up
12 First detection time of Scale Build-up
Accuumulated combustion time*
21
for scale error
82
Number of canceling
83
the error code "CF#"
* If the unit detects the abno rmal of the Heat Exchanger caused
the error cede "C #"
No
ay Window?
Solve the error code.
Reconnect electrical power and then check whether C
*To check whether the unit detects an abnormality in the Heat Exchanger caused by Scale Build-up .
If the users would like
*This procedure is only for use by
Any unauthorized use of this procedure may result in voiding the warranty.
r, they have to set the unit
Parts List inside
Data Minimum
(Displ ay Reading X Multiplier)
Va lue for
Multiplier
Unit
Indication
X 1 time 1 hour
X 1000 time 1000 hour
X 1 time
1 hour
X 1 times 1 times
times 1 times
X 1
by Scale Build-up and the Maintenance Monitor # 21 is 600 hours or less,
ay Wind ow. In case of that, the error code "H# # "
1 2
56
See page 32.
No
See page 33 to 36.
ves, send the procedure*,
rvice professional or authorized Noritz Service Representative.
Rema rks
Disp. Range [000] - [999]
Disp. Range [000] - [65]
Disp. Range [000] - [999]
Disp. Range [000] - [255]
Disp. Range [000] - [255]
for 10 seconds after reconnecting electrical power.
# is still