Troubleshooting Guide - Astralpool Heat Serie Manual De Instrucciones

ASTRALPOOLHEAT SERIES · AIR/WATER SYSTEM

10 TROUBLESHOOTING GUIDE.

The reasons why your heat pump 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.
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Coil contactor does not activate: Verify that it is not burned, and replace it if it is. Verify the terminals which activate
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the coil.
Thermal switch tripped: Verify the voltage of the line. Verify that the operating conditions are correct. Excessive
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compressor consumption. Short circuit in the compressor.
Low pressure switch tripped: Verify that the pressure switch operates correctly and substitute if necessary. Verify that
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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
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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
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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. Verify there is a good water flow
through the condenser, checking there are no obstructions in the hydraulic circuit, the shut-off valves are open and
the purification pump operates properly (replace if needed).
Flow alarm: Verify the purification pump is operating properly (pump flow may be less than needed). The filter of the
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purification pump is dirty. Clean it if needed. By-pass are closed or not sufficiently open. Revise it if needed. The
pump is not working. Revise clock condition and purification mode. The flow switch is faulty (call for service).
Defrost cycle: The ambient conditions are not correct (temperatures are too low). The unit does not work under these
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conditions. It is recommended to disconnect the unit.
Low oil level:
Low initial oil charge: Refill up to needed level.
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Oil stains on the equipment: Check for leaks in the cooling circuit and repair them if necessary, check the torque on
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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"
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section above.
Intermittent contact on machine control unit: Repair or replace the faulty electrical part. Check the temperature
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indicator.
⋅ Make sure the equipment is not too large for the facilities.
The equipment does not shut down:
⋅ Verify that the thermostat functions properly, repairing or replacing it if necessary.
Compressor contactor contacts are stuck together: Check that the coil is functioning properly and that the contacts
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are not burned.
The pressure of the intake duct is too low: Check the refrigerant charge of the equipment for leaks, to solve this
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problem please refer to the refrigerant charge section. Check that there are no obstructions in the cooling circuit,
filter-drier, expansion valve, etc. and replace if necessary. Verify that the equipment is powerful enough for the
existing thermal conditions.
Excessive noise: The fastening screws of the compressor or fan are loose: Tighten all the fastening elements.
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⋅ Check the compressor oil level.
The compressor produces internal bumping noises: Check that the noise does not come from any fluid leak from
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overheating (see section of refrigerant charge).
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