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16. DEFROSTING
A decrease in evaporation temperature to below +4 ºC will result in the shutting down of
the compressor by the evaporation security controlling unit, and the start of the defrost.
Defrost will continue (fan working) when the evaporation temperature reaches 8ºC and the
delay ends. Corresponding led will light during this cycle.
This reset will take place when the differential temperature is reached. During this time, the
fan will operate normally.
When the temperature decreases and defrosting begins, an alarm indicator will appear on
the display.
It is not advisable that the machine operate continuously under these conditions. We recommend
you disconnect the equipment if it will not be in use during prolonged periods of time or under
conditions of low temperatures.
17. TROUBLESHOOTING GUIDE
The reasons why your dehumidifier may not function properly are mentioned below:
The unit does not start:
Coil contactor does not activate: Verify that it is not burned, and replace it if it is. Verify
the terminals which activate the coil.
Internal thermal switch tripped: Verify the voltage of the line. Verify that the operating
conditions are correct. Excessive compressor consumption. Short circuit in the compressor.
Low pressure switch tripped: Verify the switch operates correctly, replacing it if necessary.
Verify that the fan is operating correctly. Verify the refrigerant charge of the equipment
(refrigerant leak, loss of refrigerant fluids) in order to solve this problem; please refer to the
refrigerant charge section.
Verify that there is sufficient ventilation around coils. Verify that there are no obstructions
in the cooling circuit and eliminate them if there are. Verify that the thermostatic valve works
properly and replace them if necessary.
High pressure switch tripped: Verify that the pressure switch operates correctly and
substitute if necessary. Check the refrigerant charge (excess refrigerant) in order to solve this
please refer to the refrigerant charge section. Check for any obstruction of the cooling circuit and
eliminate the obstruction if necessary. Check that the water flows through and that cleaning pump
works.
Verify that there is sufficient water around the condensers.
Defrost cycle: The ambient conditions are not correct (temperatures are too low). The
machine will not operate under these conditions so turn off the machine.
Low oil level:
Oil stains on the equipment: Check for leaks in the cooling circuit and repair them if
necessary, check the torque on the high and low mini pressure switches, and replace them if
necessary.
The equipment operates on cycles which are too short:
ENGLISH
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