EST EST3X - Page 230

Chapter 7: Service and troubleshooting
220 EST3X Technical Reference Manual
Device
Trouble tab message Possible cause Possible solution
CO checksum failure
The SIGA2 detector CO
module is not calibrated.
Replace the CO module.
Static value for vector
measurement too big
Devices on the loop are
drawing too much current
during the mapping process.
Place a temporary short across
the data loop (approximately
5 seconds).
Static value for vector
measurement too small
Devices on the loop are not
drawing enough current
during mapping.
• Replace the detector base.
• Check for defective wiring.
Short circuit on relay base
There is a short between the
detector and detector base.
(Note: The detector will
report that it has a standard
base, regardless of the real
base type.)
Remove the short.
Device has switched to a short
circuit
while closing the
isolator relay
There is a short on the loop.
(Note: This only applies to
detectors with an isolator
base.)
Remove the short on the loop.
External or isolator relay does
not switch
The base cannot change its
state.
Isolator base:
• Remove the detector from
the base for 60 seconds
, and
then put it back on the base.
I
f the trouble returns or there
is no power to the next base
,
replace the faulty base.
Relay base:
• Remove the detector from
the base for 60 seconds
, and
then put it back on the base.
If the trouble returns
, replace
the faulty base.
• Smoke the detector while it
is on the base. If after the
alarm the trouble returns,
replace the base.
Error with EEPROM ID,
EEPROM not initialized
• The flash memory is
corrupted.
• The EEPROM is empty
(the devices are not
identified).
Replace the detector.
In EEPROM data, non
-existent
device type
The detector is not a
Signature detector.
Replace the detector.
Double failure by EEPROM
Write Verify
The detector cannot write to
the flash memory.
Replace the detector.