Benchmark 5000-6000 Operation & Maintenance Manual
SECTION 5
– TROUBLESHOOTING GUIDE
OMM-0118_B
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GF-203
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5/9/2019
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SECTION 5:
TROUBLESHOOTING GUIDE
5.1 INTRODUCTION
This troubleshooting guide is intended to aid service/maintenance personnel in isolating the
cause of a fault in Benchmark 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.
When a fault occurs in the unit, proceed as follows to isolate and correct the fault:
Fault Correction Instructions
1. Observe the fault messages displayed in the C-More Controller display.
2. Refer to the Fault Indication column in Troubleshooting Table 5-1 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 5.2 and Table 5-2 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.
NOTE:
The front panel of the C-More Controller contains an RS232 port. This port is used only by
factory-trained personnel to monitor onAER communications via a portable computer.
