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Installation
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Overload Protections
The compressor overload and start protection cuts off power to the compressor if the
compressor speed drops below approximately 1,900 rpm, or if this motor speed is not
reached during the start sequence. Possible reasons for overload protection activating
could be too high refrigeration system pressures during operation or lack of pressure
equalizing at start.
The fan overload protection stops the compressor if the fan current exceeds 0.5 A
(avg)
or 1 A
(peak)
.
An overheating of the electronic unit heat sink will cause the compressor to stop. Restart will
occur automatically when a normal temperature has been reached. If a fan is installed, it will
continue to run when the compressor stops, due to overload or electronic unit overheating.
Voltage Protection
If a voltage outside any operational range is applied to the electronic unit, the compressor
does not start, or it stops if the voltage limit is exceeded during operation. The compressor
will restart automatically, approximately 1 minute after the supply voltage has reached the
reset voltage within the range in question.
Battery Protection
The Danfoss electronic unit provides protection as follows:
12V cut-out 12V cut-in 24V cut-out 24V cut-in
10.4 11.7 22.8 24.2
Standard Battery Protection Settings