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Benchmark 1.5ln low nox boiler, Gf-120 – AERCO BMK 1.5 LN July 2011 User Manual

Page 108

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APPENDIX B: STARTUP, STATUS AND FAULT MESSAGES

Page

108 of 152 PR2: 05/09/12

Benchmark 1.5LN Low NOx Boiler

Operation and Maintenance Manual

OMM-0041_0D

GF-120

AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288

Table B-2: Fault Messages

FAULT MESSAGE

FAULT DESCRIPTION

AIRFLOW FAULT

DURING PURGE

The Blower Proof Switch opened during purge,

or air inlet is blocked.

AIRFLOW FAULT

DURING IGN

The Blower Proof Switch opened during ignition.

AIRFLOW FAULT

DURING RUN

The Blower Proof Switch opened during run.

DELAYED

INTERLOCK OPEN

The Delayed Interlock is open.

DIRECT DRIVE

SIGNAL FAULT

The direct drive signal is not present or is out of range.

FFWD TEMP

SENSOR FAULT

The temperature measured by the Feed Forward (FFWD)

Sensor is out of range.

FLAME LOSS

DURING IGN

The Flame signal was not seen during ignition or lost within 5

seconds after ignition.

FLAME LOSS

DURING RUN

The Flame signal was lost during run.

HEAT DEMAND

FAILURE

The Heat Demand Relays on the Ignition board failed to

activate when commanded.

HIGH EXHAUST

TEMPERATURE

The High Exhaust Temperature Limit Switch is closed.

HIGH GAS

PRESSURE

The High Gas Pressure Limit Switch is open.

HIGH WATER

TEMPERATURE

The temperature measured by the Outlet Sensor exceeded

the Temp Hi Limit setting.

HIGH WATER TEMP

SWITCH OPEN

The High Water Temperature Limit Switch is open.

IGN BOARD

COMM FAULT

A communication fault has occurred between the PMC board

and Ignition board.

IGN SWTCH CLOSED

DURING PURGE

The Ignition Position Limit switch on the Air/Fuel Valve closed

during purge.

IGN SWTCH OPEN

DURING IGNITION

The Ignition Position Limit switch on the Air/Fuel Valve

opened during ignition.

INTERLOCK

OPEN

The Remote Interlock is open.

LINE VOLTAGE

OUT OF PHASE

The Line (Hot) and Neutral wires are reversed.

LOW GAS

PRESSURE

The Low Gas Pressure Limit Switch is open.

LOW WATER

LEVEL

The Low Water Cutoff board is indicating low water level.

NETWORK COMM

FAULT

The RS-485 network information is not present or is

corrupted.