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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 1500 MBH and 2000 MBH boilers. 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.
The front panel of the C-More Control Box contains an RS-232
port which can be interfaced to a laptop computer or other suitable
device. This RS-232 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
RS-232 communication set-up and procedures.
When a fault occurs in the unit, 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. Section 8.2 and Table 8-2 contain additional troubleshooting information which may apply
when a no fault message is displayed.
If the fault cannot be corrected using the information provided in the Troubleshooting Tables,
contact your local AERCO Representative.
OMM-0097_0C
GF-142
Benchmark 1500 - 2000 Boilers
CHAPTER 8 – TROUBLESHOOTING GUIDE
NOTE
Fault Correction
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Ph.: 800-526-0288
Page 95 of 184
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