4 diagnostic tests and input/output indicators – LAARS NeoTherm NTV1000 - Install and Operating Manual User Manual
Page 121
NeoTherm Boilers and Water Heaters
Page 117
12.4 Diagnostic tests and Input/
output Indicators
Two kinds of screens are grouped together in this
section:
•
Detailed indications of the input and output
signals
•
Diagnostic tests of the pumps and burner
modulation
Note that these functions apply to just one selected
controller.
How to get there –
Home Page
1. The first screen in the sequence lists digital
inputs and outputs. These are signals that are
either “on” or “off.” See Fig. 132.
fig. 132 - Digital I/o Screen
A green dot indicates a function that is “on.”
There is too much information to appear on
one screen. Use the left- and right-arrows to
see the rest of the list.
2. Press the Analog I/O button to look at
functions where the values move continuously
between two limits. See Fig. 133.
fig. 133 – analog I/o Screen
3. Press the button for Diagnostic Tests. The
Modulation test allows you to change the
rate at which the burner fires, and watch the
results. See Fig. 134.
fig. 134 – modulation test
4. On the screen for the Modulation Test, press
the Pump Test button. The Pump test shows
detailed information on the activity of the
three pumps that may be used by the system.