AERCO BMK 1.5 LN July 2011 - Manual (Page 83)

PR2: 05/01/11 Page 83 of 152
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
CHAPTER 8: TROUBLESHOOTING GUIDE
8.1 INTRODUCTION
This troubleshooting guide is intended to aid service/maintenance personnel in isolating the
cause of a fault in a Benchmark 1.5 Boiler. The troubleshooting procedures contained herein
are presented in tabular form on the following pages. These tables are comprised of three
columns labeled: Fault Indication, Probable Cause and Corrective Action. The numbered items
in the Probable Cause and Corrective Action columns correspond to each other. For example,
Probable Cause No. 1 corresponds to Corrective Action No. 1, etc.
NOTE
The front panel of the C-More Control Box contains an RS232 port
which can be interfaced to a laptop computer or other suitable
device. This RS232 communication feature permits service
personnel to view menu items and data logs which can be useful
in isolating faults. Refer to Chapter 9 of this manual for detailed
RS232 communication set-up and procedures.
When a fault occurs in the Benchmark Boiler, proceed as follows to isolate and correct the fault:
1. Observe the fault messages displayed in the Control Box display.
2. Refer to the Fault Indication column in Troubleshooting Table 8-1 which follows and locate
the Fault that best describes the existing conditions.
3. Proceed to the Probable Cause column and start with the first item (1) listed for the Fault
Indication.
4. Perform the checks and procedures listed in the Corrective Action column for the first
Probable Cause candidate.
5. Continue checking each additional Probable Cause for the existing fault until the fault is
corrected.
6. Paragraph 8.2 and Table 8-2 contain additional troubleshooting information which may apply
when no fault message is displayed.
7. If the fault cannot be corrected using the information provided in the Troubleshooting
Tables, contact your local AERCO Representative.