AERCO KC Series Equipped with C-More version 3.04 - Manual (Page 68)

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, 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 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, contact your local AERCO
Representative.