Benchmark 750/1000 Boiler Installation, Operation & Maintenance Manual
CHAPTER 8 – TROUBLESHOOTING GUIDE
OMM-0082_0J
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
Page
101
of
192
GF-130
Ph.: 800-526-0288
05/21/2014
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 750 MBH or 1000 MBH 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 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:
Troubleshooting Instructions
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 no fault message is displayed.
If the fault cannot be corrected using the information provided in the Troubleshooting Tables,
contact your local AERCO Representative.
