Lennox FLATAIR KFC Series, Инструкция по установке и эксплуатации

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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
UNIT STARTS AND STOPS IN
SHORT CYCLES
Compressor overcharged.
Inspect suction and discharge pressure
values and correct.
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.
Fan is not working.
Fan turns in the wrong direction.
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.
Lack of refrigerant. Leak. Correct leak, create vacuum and charge.
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.
Dirty and overflowing trays. Inspect and Clean.
Inspect and Correct or Change the
Filter drier.
4.- MAINTENANCE
Excess charge of the Refrigerant.
4.3.- FAILURE DIAGNOSIS
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.
Remove the charge and charge
according to the data on the Rating Plate.