Fault Codes - Bacharach HGM-SZ Installation & Operation Manual

Single Zone Gas Monitor

3.5.4. 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.
Code Name
<0001> Box Temperature
Fault
<0002> Bench
Temperature Fault
<0004> Manifold Pressure
Fault
<0010> Loop Fault
<0100> Zero Filter Fault
<0200> Gain Set Fault
<0400> A/D Fault
<0800> Zone Flow Fault
<1000> Purge Flow Fault
<4000> Zero Fault
<8000> Clipping Fault
24
Description
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 26) to check
Temperature.
Optical bench is outside normal operating range (or IR detector has
failed). Check that the monitor is not being subjected to extreme
temperatures.
The manifold pressure is outside normal operating range (or IR
detector has failed). Enter the DIAGNOS function (page 26) and
record ALL data. Call the factory with this information for further
instructions.
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 16).
There is gas present in the purge air. Locate the monitor in an area
containing fresh air, or install a purge air line. Refer to page 7.
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.
A fault has occurred in the analog-to-digital circuitry. Contact the
factory with this information for further instructions.
Check for:
A kink in the gas-sample line or exhaust line; a blocked external
termination filter; a blocked internal hydrophobic filter (page 11); a
failed pump.
Check for:
A kink in the purge line; a blocked external termination filter; a
blocked internal hydrophobic filter (page 11); a failed pump. Once
the blockage has been cleared, the monitor will return to normal
operation after the monitor completes a purge cycle.
The IR detector's output voltage is out of tolerance. Enter the
DIAGNOS function (page 26) and record ALL data. Call the factory
with this information for further instructions.
The detector voltage may be out of tolerance. Use the DIAGNOS
function (page 26) to check the IR detector voltage. Call the factory
with this information for further instructions.
the Box
P/N: 3015-4256 Rev 13