Installation Instructions

MTU Instruction
for Neptune and Schlumberger Water Meters
Once the user selects Yes on the above
screen and successfully completes
programming the NTG MTU for use with
an E-Coder Plus register, the NTG MTU
can no longer be used with an ARB-V or
ProRead register. From this point
forward, only E-Coder meter types will be
available for selection when programming
this NTG MTU.
Error Codes
When an E-Coder meter type is selected
while programming an NTG MTU with the
MTU Programmer, the MTU attempts to
communicate with the register using a
special protocol that reads the status of
the E-Coders leak, tamper and reverse
flow detection indicators. If the MTU
cannot successfully communicate with
the register, an error code will be
displayed on the MTU Programmer, as
shown below.
Pressing Enter in response to this
display will display the current settings for
the MTU, including the error code, as
shown below.
This error indicates one of the following
problems:
• Attempting to use an E-Coder
meter type with a register that is
not an E-Coder.
• A defective E-Coder register.
• Improper wiring between the NTG
MTU and the E-Coder. (Refer to
Publication 471-2110 for E-Coder
wiring information.)
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