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Controls
and Indicators
3-13
3.11
The H and the L in the digital
display flash faster (2X) than the
normal
high and low alarm indications
to show that the high-high
or
low-low limits have been exceeded.
Error Indications
If the controller
detects
a fault during continuous
automatic
self-testing,
Err n, or a flashing
E appears
in the left character
position
of the digital
display. When this happens
the user can press
the PROG
button to display the error code. Refer to Fault Codes,
Appendix
A.
If more than one error code occurs,
each code may be called up in
turn by pressing
the setpoint/configuration
increase/decrease
but-
tons while in the Programming
mode.
There are two ways of exiting the error indication
mode:
1. Pressing
the PROG
button once more puts the controller
in the
configuration
mode. The error codes remain
stored
in the controller
and may be examined
again, if necessary.
Pressing
the PROG
button a third time takes the controller
out of the configuration
mode
and returns
the displays
to their normal
states.
2. Pressing
the TUNE
button also switches the controller
to the con-
figuration
mode,
but erases the error codes.
Pressing
the PROG
button again returns the controller
to the normal
display.
Error codes
lower than 101 indicate
fatal errors which seriously
ef-
fect the controller
function
May 1991
UM6.
i:DPR900:9102
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