
109
Sequence of Operation
ELECTRONIC TEMPERATURE CONTROL (ETC)
The Electronic Temperature Control (ETC) has been
factory preset and tested. The ETC will turn the
refrigeration compressor on and off to maintain the
glycol bath temperature between 27°F (-2.7°C) and
29°F (-1.6°C). This is considered the best temperature
range for most beer cooling applications. The front
panel of the ETC has a liquid crystal display (LCD) and
an output relay indicator light-emitting diode (LED).
The LCD is visible through a “window” in the cover
panel. The LED is visible only when the cover panel is
removed.
During normal operation, the LCD displays the glycol
bath temperature and an icon (*) indicating the cooling
mode. The LCD will also display various codes for
programming and for indicating faults. Programming is
factory set and locked into the ETC. The following fault
codes are defined with associated remedial action:
Fault Code
Definition
Solution
SF flashing
alternately with
OP sensor
Open
temperature
sensor or sensor
wiring.
Check sensor
wiring. Turn wiring
power OFF and ON
to reset control.
Replace sensor.
SF flashing
alternately with
SH
Shorted
temperature
sensor or sensor
wiring
Check sensor
wiring. Turn wiring
power OFF and ON
to reset control.
Replace sensor.
EE
Program failure
Reset control by
pressing the Menu
button. If problems
persist, replace the
control.
STH13_Tech.book Page 109 Wednesday, September 15, 2010 3:20 PM