Version 1.4
54 NCB-E Service Manual
Item
Description
Display
(*) Password
Change mode
This menu may be used to set a new password to access the parameter
setting menu.
To set a new password:
1. Move to [*.PSC] and press the “Mode” button. The current password is
displayed, with the first digit flashing.
2. Press the + or – buttons to change numbers.
3. Press the [Diagnostic] button to change places.
4. When you are done setting the password, press the [Mode] button to save
it. The new password is displayed on the front panel for 3 seconds, before
the boiler returns to the parameter setting mode.
NOTE
If you do not press the [Mode] button for 10 seconds after setting a
new password, the new password is automatically saved and [T.PSC] is
displayed on the front panel.
When entering <Password
Change mode>, the password set
will be displayed.
The 1st Segment of password set
flashes at 500ms intervals.
(2) Error Checking mode
1. While in <Special Parameter mode>, press the [+] / [-] button and then press the [Mode] button once “2.TST” is displayed on the front
panel.
2. After accessing <Error Checking Mode>, make sure that the boiler is not operating (stop flow)
3. Increase / decrease and change the component check menu item with the [+] / [-] button.
4. For an item not supported by the current model, do not display the item but skip it. (Depending on the DIP SW setting)
5. Press the [Mode] button once to display “WAIT”, execute the component check operation for the relevant item, and return to the <Trouble
Check mode> after operation ends. (excluding the 3-way valve and Dual Venturi Test).
6. During the component check operation, a test is automatically performed without pressing additional buttons (except the 3-Way Valve
and Dual Venturi Test).
7. The 3-Way Valve and Dual Venturi test function is to perform an On / Off manual operation test with the [+], [-] buttons, and if the [Reset]
button is pressed or there is no key input for 5 minutes, then it returns to the “D.VEN” display item.
8. Press the [Reset] button once to return to <Special Parameter mode>. (To the display of the previously entered item “2. TST” display)
9. If there is no button input for 5 minutes, it automatically returns to the <Special Parameter mode>.
Item
Description
Display
FAN Motor
Fan motor component check menu display
Pump
Pump component check menu display
3-Way Valve
3-Way Valve component check menu display
Dual Venturi
Dual Venturi component check menu display
