Troubleshooting - Honeywell Searchpoint Optima Plus Operating Instructions Manual

MAN0905_Issue 7_07/17
The Troubleshooting section explains how to deal with problems that may be encountered when using
Searchpoint Optima Plus.
The Warnings and Faults section explains the meaning of diagnostic messages and the best course of
action to deal with the problem.
Some types of faults and warnings will latch the 4-20 mA output and need to be cleared by a Reset.
Note: If any configuration changes have been made, wait 15 seconds before doing a soft reset or cycling
the power.
Note: When connecting or disconnecting a multimeter, power off the Searchpoint Optima Plus, otherwise
the unit will indicate a latched warning that the 4-20 mA loop was broken. If this occurs, it can be cleared
using the SHC1 Handheld Interrogator or the HART
Note: Searchpoint Optima Plus continues to function as a gas detector while indicating Warning, although
aspects of its performance may be reduced.
If a problem persists please contact Honeywell Analytics for advice, using the contact details given on the
back page.

14.1 Troubleshooting

Fault / Problem
No analogue output
Output is < 1 mA or 1 mA
Output is 2 ± 0.2 mA (or other
configured Inhibit level)
Output is 3 ± 0.2 mA (or other
configured Warning level)
14. Problem Solving
Possible Cause
Electrical installation problem
Unit is in Fault condition
Unit is in Inhibit
Unit is indicating a Warning
Note: Unit will still function
as a gas detector
Searchpoint Optima Plus with optional HART
communications. See Clear Faults or Warnings.
®
Remedial Action
1. Check that the +24 V supply is
reaching the unit. Voltage at the unit should be
between +18 V and +32 V.
2. Check cables and connections to the unit, especially
the 4-20 mA loop connections
1. Connect the SHC1 Handheld Interrogator to the unit
or use the HART
communications to ascertain the reason for the Fault
report (see Maintenance).
2. Diagnose the problem using the table of Warning
and Fault messages below.
1. The Inhibit mode has no time out. A procedure may
have been aborted while the unit was in Inhibit.
2. Connect to the HART
Device Setup, Test, Inhibit then End Inhibit
or
Connect the SHC1 Handheld Interrogator and select
Calibrate then Normal 4-20.
1. Connect the SHC1 Handheld Interrogator to the unit
or use the HART
reason for the Warning report (see Maintenance).
2. Diagnose the problem using the table of Warning
and Fault messages below.
68
Operating Instructions
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communications and select
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communications to ascertain the
®
output
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2108M0550