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Instruction 3015-4286 19
Viewing the Fault Log
From the Data Display screen, use the Keypad buttons to place the arrow (>) on the display next to the
FAULTS function. Then press ENTER to display the fault log.
The fault log shows the monitor’s current fault status. If the fault is still
present when the FAULTS function is selected, then the current cause of
the fault is displayed along with the date and time it occurred. If the cause
of the fault has been cleared, then the fault log will show <0000> along with
the date and time the fault was cleared. Use the keypad buttons to scroll
through the fault log. In the examples shown to the left, record #03 shows
that a Zone Flow Fault (fault code <0800>) occurred on 11/12/03 at 08:17,
while record #04 shows that the fault was cleared on 11/12/03 at 8:30.
The cause of the fault is identified by a numeric fault code. To convert the
fault code into a text description of the fault, first press the ENTER button
and then use the Keypad buttons to scroll through the display until the text
description of the fault appears. If the fault code is a combination of two or
more faults, then continue to use the Keypad buttons until all fault text
descriptions have been displayed. For example, the fault code <1800>
represents the combination of both a Zone Flow <0800> and a Purge Flow
<1000> fault as shown to the left.
Note that the Fault Log can be cleared as described in Section
Clearing the Stored PPM Log, Alarm &
Fault Data (Page
20).
Fault Codes
FAULT CODES ARE ADDITIVE. For example:
A fault code of <1800> indicates that both a Purge
Flow Fault <1000> and a Zone Flow Fault <0800>
have occurred.
<0001> Box Temperature Fault: Enclosure
temperature is outside normal range (or IR
detector has failed). Check that the monitor is not
being subjected to extreme temperatures. Verify
that the ventilation holes are not obstructed. Use
the DIAGNOS function (Page
21) to check the Box
Temperature.
<0002> Bench Temperature Fault: Optical
bench is outside normal operating range (or IR
detector has failed). Check that the monitor is not
being subjected to extreme temperatures.
<0004> - Manifold Pressure Fault: The manifold
pressure is outside normal operating range (or IR
detector has failed). Enter the DIAGNOS function
(Page
21) and record ALL data. Call the factory
with this information for further instructions.
<0010> Loop Fault: The 4–20 mA current loop is
open, or there is a high resistance in the circuit. Check
the wiring to the load/monitoring circuit. If this
feature is not being used, a 100 ohm resistor must be
connected to the 4–20 mA connector (Page
11).
<0100> Zero Filter Fault: There is refrigerant
gas present in the purge air. Locate the monitor in
an area containing fresh air, or install a purge air
line. Refer to
Locating the Monitor (Page 5).
<0200> Gain Set Fault: The digipot autotune
sequence has failed. This fault will only occur on
first boot up or after a firmware upgrade. Call the
factory for further instructions.
<0400> A/D Fault: A fault has occurred in the
analog-to-digital circuitry. Contact the factory with
this information for further instructions.
<0800> Zone Flow Fault: Check for: A kink in
the gas-sample line or exhaust line; a blocked
external termination filter; a blocked internal
hydrophobic filter (Page
8); a failed pump.
<1000> Purge Flow Fault: Check for: A kink in
the purge line; a blocked external termination
filter; a blocked internal hydrophobic filter
(Page
8); a failed pump. Once the blockage has
been cleared, the monitor will return to normal
operation after the monitor completes a purge
cycle.
<4000> Zero Fault: The IR detector’s output
voltage is out of tolerance. Enter the DIAGNOS
function (Page
21) and record ALL data. Call the
factory with this information for further
instructions.
<8000> Clipping Fault: The detector voltage may
be out of tolerance. Use the DIAGNOS function
(Page
21) to check the IR detector voltage. Call the
factory with this information for further
instructions.
#03 <0800> @
11/12/03 08:17
F
AULT CODE<1800>
12 ZON
E
FLOW
F
AULT CODE<1800>
13 PURGE FLOW
#04 <0000> @
11/12/03 08:30