User Manual
65
7 LEDs for diagnostics
The electronic control unit has a troubleshooting function when a LED is connected
as shown below.
The number of flashes indicates the type of error.
Number of LED
Flashes
Type of Error
Solution
6
Defective sensor (the sensor is defec-
tive or disconnected).
Re-connect the sensor and verify that
the compressor starts working again.
Replace sensor if the compressor does
not work.
5
Thermal protection of the electronic
control unit
.
(the electronic control unit overheats
if the refrigeration system has become
overloaded or the environmental tem-
perature is too high)
Remove excess gas or increase ventila-
tion.
4
Minimum motor speed error.
(if the refrigeration system has been
overloaded, the motor cannot maintain
minimum speed of approximately
1.850 RPM).
Remove excess gas.
3
Motor starting error
[the rotor is blocked or pressure inside
the refrigerant circuit is too high (> 5
bar)].
Defective electronic control unit.
The first operation to attempt is to
replace the electronic control unit. Re-
place compressor if problem persists.
2
Fan short-circuited
(the fan absorbs more than 1A from
the electronic control unit).
Replace the fan.
1
Battery protection
(voltage is outside the maximum and
minimum voltages).
Check power cable conditions. Replace
with new cables if necessary. Check
battery conditions.
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Страница 281: ...281 Isotherm Drawer Standar Drawer 49 65 85 105 130 DC 12 24 Volt ...
Страница 282: ...282 Isotherm Drawer Standar Drawer 49 65 85 105 130 AC DC 12 24 115 230 Volt ...
Страница 283: ...283 Isotherm Drawer Drawer 160 Fridge Fridge DC 12 24 Volt ...
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