SURREY Multi split Manual De Instalación, Operación Y Mantenimiento página 49

TROUBLE
8. Reduced discharge
pressure
9. Suction pressure
reduced
M A N U A L D E I N S TA L A C I Ó N , O P E R A C I Ó N Y M A N T E N I M I E N T O
POSSIBLE CAUSE
- Low temperature of the outside air.
- Lack of refrigerant.
refrigerant if necessary.
- Defective compressor.
- Compressor operates with reversed
rotation.
the position of the two cables of the
- Reversing cycle of the rotation in the
evaporator fan.
- Reduced discharge pressure
- Insufficient thermal load
- Lack of refrigerant.
- Low air flow in the evaporator.
replace.
- Insufficient refrigerant supply in the
evaporator.
- Disarmed high pressostat without
apparent cause.
PROCEDURE
- Install a damper for the capacity
control.
- Check and correct leaks. Add
- Check suction and discharge pressures.
Replace if necessary.
- Check suction and discharge pressures.
In case the reversion is found, change
power terminal of the unit.
- Check and correct.
- See trouble 8.
- Check the project conditions.
- Check and correct leaks. Add
refrigerant if necessary.
- Look for dirt in the air filters Clean or
- Look for dirt in the coil. Clean and
filter properly.
- Check the records of adjustment of the
ductwork.
- Check the motor operation. Replace if
necessary.
-8-pole motor instead of 6 (wrong fan
modules)
- Check for obstructions in the dryer
filter, in the distributor or in the lines.
Replace if necessary.
- Check for obstructions in the
expansion valve. Replace if necessary.
- Check the adjustment of the expansion
valve overheating (4 to 6
necessary.
- Check excessive load loss in the
refrigerant lines due to distance, unlevel
or diameter of the piping. Correct if
necessary.
- Check the position of the bulb and of
the equalizing tube of the expansio valve.
Correct according to the factory
specifications.
- Check the actuator. Replace if
necessary.
C). Adjust if
o
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