Bacharach HGM-SZ Specifications download pdf (Page 23)

Instruction 3015-4256 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 11/12/08 at 08:17, while record #04 shows that the

fault was cleared on 11/12/08 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 22) 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 22) 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

Location of 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 22) 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 22) to check the IR detector voltage. Call the

factory with this information for further instructions.

#03 <0800> @

11/12/08 08:17

AULT CODE<1800>

12 ZONE FLOW

AULT CODE<1800>

13 PURGE FLOW

#04 <0000> @

11/12/08 08:30

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 37 38

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Bacharach HGM-SZ Specifications Page 23

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