Add Credit; Invalid / Already Used Utrn Entry - Landis+Gyr E470 Series User Manual

Prepayment mode

15.12.2 Add credit

15.12.3 Invalid / already used UTRN entry

D000058620 en a – E470 Series 3 SMETS2 100 mm – ZCX310 – User Manual and Functional Description
Issue 1.2
The add credit option allows the user to enter the details of a 20-digit
payment code. This is to provide a back-up mechanism where the WAN or
HAN network is not available, or a network fault has stopped a payment
getting to the meter.
Selecting the A button from the prepayment mode status display will direct
the user to the add credit screen, selecting the B button will direct the user
to the UTRN entry display, providing the display has not been locked out
due to invalid code entry.
On access to the UTRN screen the user can enter the 20-digit UTRN code
from the customer receipt or other mechanism.
The pin is entered using the A and B buttons
The A button is used to increment the numbers through 0-9
The B button moves to the next digit
Holding the B button for >1s offers the entered UTRN details to the meter
The meter will then validate the UTRN firstly to ensure that the UTRN has
been entered correctly, and then secondly will validate that the UTRN has
not been entered previously. If the validation checks are passed the value
of credit within the UTRN is applied to the meter, and the meter display
returns to the prepayment mode status display.
If the user has entered an invalid UTRN then the meter will display 'Invalid
re-enter code' the user is directed back to the add credit display where they
can repeat the process.
The meter allows 5 invalid attempts to be made within a 10-minute period, if
the meter records the 5 entries within the time window then the UTRN entry
is locked out for 1 hour, the display will show 'code entry locked' and return
to the prepayment mode status display.
If the meter sees a repeat attempt of an already processed UTRN then the
display will show 'credit already used' and return the user back to the add
credit display.
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