Honeywell 5701 Operating Instructions Manual page 159

MAN0443.P65 Issue 13 Aug 04
05701-M-5001 A02279
CHAPTER 5 - COMMISSIONING AND
MAINTENANCE INSTRUCTIONS
Fault
An error message is
displayed.
The FAULT LED
illuminated.
The INHIBIT LED is
illuminated.
The unlocked ( ) LED is
illuminated.
The unlocked ( ) LED is
flashing.
The ALARM LED
illuminated but no gas
reading indicated.
Check the error code tables in Section
5 for explanation.
Check the message display for an
is
error code. See Section 5 for
explanation of error codes.
Check sensor connection and
operation.
Wait for at least 255 seconds to see if
the LED extinguishes.
Insert the Engineers Key into the
Engineering Card and then operate
the INHIBIT push-button. This should
toggle the inhibit LED on and off,
otherwise check the remote inhibit
level.
Remove the Engineering Key from the
Engineering Card.
Check that all the control cards are
fitted to the rack and are working.
If a card has been removed
deliberately, fit the Engineering Key
into the Engineering Card socket and
then remove the key again.
Select each control card in turn and,
using one of the Engineering Card
functions, check that com-munications
exist between the selected control card
and Engineering Card.
Check that the dc power supply is more
than 16V.
Press the RESET/SELECT push-
is
button momentarily to remove the
latched alarm condition.
5 - 20
5701 Control System
Action