Owner’s Manual
Quantum Energy Technologies
Section 10: OPERATION & ADJUSTMENT OF THE DIGITAL CONTROLLER
Caution:
Alteration of the Digital Controllers programming & settings without authorisation from
Quantum Energy Technologies will void your warranty. This section is provided
ONLY
for qualified
refrigeration technicians to assist in servicing, repairs or trouble shooting.
10a: The Buttons
Use In Conjunction With The Layout Diagram Fig: 5 And Wiring Diagrams Fig: 6&7.
10a.1: SET BUTTON
a)
To enter the settings node, press the
SET
button
3 times
; the display will show H55, this is the
water temperature cut out set point. Pressing the
UP
or
DOWN
button will adjust the set point
from 10
℃
to a maximum setting of 62
℃
(factory setting 55
℃
).
b)
Press & hold for
6 seconds
to enter the de-icing mode. If display shows
“OFF”
press & hold for
another
6 seconds
to exit this mode. (Note this may cause system malfunction so avoid using).
c)
Pressing the
SET
button (hold for 6 seconds) will perform a manual reset of the system if
required i.e. after a 105
℃
Thermal Trip. Turning power off to the system, them back on will
also reset it.
10a.2: UP BUTTON
a)
This key becomes operational after entering the settings mode above.
b)
Press
3 times
to display
Axx
(the compressor temperature). Push again to display
bxx
(evaporator temperature) or again for
Cxx
(ambient temperature).
c)
During the time delay start period, press & hold for
3 seconds
to force a compressor start. When
the compressor is running, press & hold for
3 seconds
to force a compressor shutdown.
10a.3: DOWN BUTTON
a)
This key becomes operational after entering the settings mode above.
b)
Press & hold for
3 seconds
to simultaneously open the de-ice valve and liquid injection valve;
the valves will close 10 seconds later.
c)
When compressor is running, press
3 times
to display the Amperage being drawn
Cxx
.
10b: Programming Menu
To restore the digital controllers factory settings, press the
SET
button and hold while turning the
power onto the system.
To exit any level press the
SET
button to cycle through all menu items until the controller returns to
the water temperature display once again.
Document number: QDC0030PD-11 Page 25 of 40
Summary of Contents for 270-11AC3-134
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