Groen CC20-E Operator's Manual page 197

SERVICE CODES
How To Troubleshoot A Service Code
The solid state, self-diagnostic program utilizes nine service codes to assist you in
troubleshooting:
Code Indication - Old Electronics (Prior to Serial # C7439MS
and GC7243MS)
1 Low water level probe circuit problem
2 High water level probe circuit problem
3 Boiler fill time exceeded
4 Air temperature probe circuit problem
5 Drain temperature probe circuit problem
6 Water temperature probe circuit problem
7 Solid state controls out of calibration
8 Boiler drain time exceeded
1 and 2 Both water level probes or the boiler temperature probe
circuit problem.
Code Indication - New Electronics (After Serial # C7439MS
and GC7243MS)
1 Low water level probe circuit problem
2 High water level probe circuit problem
3 Boiler fill time exceeded
4 Air temperature probe circuit problem
5 N/A
6 Water temperature probe circuit problem
7 Boiler "Time-Between-Fills" etc.
8 Boiler drain time exceeded
9 Boiler temperature probe exceeded 240°
1 and 2 Both water level probes.
Each service code section contains a Service Information Block and a
Troubleshooting Table.
Before making a service call, go through
the information block with the customer.
Use the Service Information Block to help prepare you for a service call. If a serv-
ice call is required, start with the first Probable Cause listed for the serv-
ice code, and proceed through each Corrective Action in the sequence
presented.
A "non-warranty" symbol is used throughout the troubleshooting tables to tell
you when corrective actions may not be covered by the equipment warranty.
Other Messages
Messages other than service codes may appear in the Time display window.
These messages are associated with oven operation and adjustment, and are
defined below.
AL -
The Time display window will show the letters AL, and a number that
represents the altitude in thousands of feet, when programming the
altitude of operation as described on page 8-11.
CL:50 - Either of these two messages will appear in the Time display or
or widow to tell you what E-PROM is installed in the control panel.
CL:45 One or the other will be displayed when attempting to determine
which PC is installed in the control panel, and during oven cleaning
operation. Both of these procedures are described in the Operating
Manual.
t-CAL -
This service message will appear in the Time display window during
the control panel calibration check. See page 8-1. (Not used in units
after GC7243MS and C7439MS)
6-2
IMPORTANT
(Revised 1/02)