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10 TROUBLESHOOTING GUIDE.
The reasons why your dehumidifier may not function properly are mentioned below:
The unit does not start:
⋅ Operating switch tripped: Check there is no short circuit in the control panel, repair the possible
short circuit.
⋅ Coil contactor does not activate: Verify that it is not burned, and replace it if it is. Verify the
terminals which activate the coil.
⋅ 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 that the pressure switch operates correctly and substitute 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. Check for any obstruction of the cooling
circuit and eliminate the obstruction if necessary. Verify that the thermostatic valve is operating
properly, checking the bulb has no gas leaks and that the pressure inlet is free of obstruction.
Replace if needed.
⋅ 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.
⋅ Defrost cycle: The ambient conditions are not correct (temperatures are too low). The unit does
not work under these conditions. It is recommended to disconnect the unit.
Low oil level:
⋅ Low initial oil charge: Refill up to needed 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 pressure valves, and replace them if necessary.
The equipment operates on cycles which are too short:
⋅ The low pressure switch opens then closes again: Verify the points mentioned in the "low
pressure switch tripped" section above.
⋅ Intermittent contact on machine control unit: Repair or replace the faulty electrical part. Check
the temperature indicator.
⋅ Make sure the equipment is not too large for the facilities.
© ASTRALPOOL 2008. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
ENGLISH
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