AERCO KC1000 Water Heater July 2011 - Manual (Page 65)

TROUBLESHOOTING
7-1
SECTION 7- TROUBLESHOOTING GUIDE
7.1 INTRODUCTION
This troubleshooting guide is intended to aid
service/maintenance personnel in isolating the
cause of a fault in a KC 1000 Water Heater.
The troubleshooting procedures contained
herein are presented in tabular form on the
following pages. These tables are comprised of
three columns labeled: Fault Indication, Prob-
able 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 Section 8 of this manual for detailed RS232
communication set-up and procedures.
When a fault occurs in the KC1000 Water
Heater, 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 the
following troubleshooting tables 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. If the fault cannot be corrected using the
information provided in the Troubleshooting
Tables, please contact your local AERCO
Representative.