Watts AERCO Benchmark 2.0 LN Operating & Maintenance Instructions page 52

8.1 INTRODUCTION
This troubleshooting guide is intended to aid
service/maintenance personnel in isolating the
cause of a fault in a Benchmark Series Boiler.
The troubleshooting
herein are presented in tabular form on the
following pages. These tables are comprised of
three columns labeled:
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 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.
Chapter 8- TROUBLESHOOTING GUIDE
procedures contained
Fault Indication,
TROUBLESHOOTING
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
Representative.
your local AERCO
8-1