41
FAILURE
POSSIBLE CAUSES
POSSIBLE SOLUTIONS
UNIT DOES NOT START
Failure in the power supply, or
insufficient voltage.
UNIT STOPS DUE TO HIGH
PRESSURE DURING THE
COOLING CYCLE
The same causes and solutions as the Cold Cycle but with reference to the
batteries and Indoor Fan.
UNIT STARTS AND STOPS IN
SHORT CYCLES
Compressor overcharged.
Inspect suction and discharge pressure
values and correct.
UNIT STOPS DUE TO HIGH
PRESSURE DURING THE
HEATING CYCLE
UNIT STOPS DUE TO LOW
PRESSURE
LOAD AND ABNORMAL
NOISE IN THE
COMPRESSOR (SCROLL)
WATER LEAKS
Circuit breakers have opened.
Power cable or Control Panel cable
is defective.
Connect the power supply or check
the voltage.
Reset.
Inspect and Correct.
High Pressure switch is defective.
Outdoor fan is not working.
Outdoor Fan turns in the wrong
direction.
Outdoor Coil is dirty or clogged for
passing air
Check Cut-off Pressure or
change Pressure Switch if necessary.
Check for voltage, inspect the motor and
turbine or replace if necessary.
Switch the power phases.
Inspect and Clean.
Low pressure switch defective.
Check the Cut-off Pressure with a
pressure gauge and change the
Pressure switch if necessary.
Indoor Fan is not working.
Check for voltage and inspect the
motor, turbine and replace if necessary.
Indoor Fan turns in the wrong
direction.
Switch the power phases.
Lack of refrigerant. Leak.
Correct leak, create vacuum and charge.
Dirty Air Filter
Inspect and Clean.
Clogged Cooling Circuit.
Dirty filter drier.
Compressor cuts off due to Klixon.
Inspect input voltage and voltage drop.
Lack of Refrigerant.
Correct leak and replace.
Power supply phases inverted
(three-phase compressor).
Inspect and switch power phases.
Clogged drainage.
Inspect and Clean.
Loose drainage pipe connections.
Correct connection.
Inspect and Correct or Change the
Filter drier.
Excess charge of the Refrigerant.
Remove the charge and charge
according to the data on the Rating Plate.
In case of failure or malfunction of the unit, the Display on the Control Panel will show an Error or Alarm warning
explained in the Control Panel Manual. Nevertheless, whenever there is a unit failure, the unit should be shut down
and our Service Technicians consulted.
Dirty and overflowing trays.
Inspect and Clean.
4.- MAINTENANCE
4.3.- FAILURE DIAGNOSIS
