Eventual Abnormalities - SURREY Multi split Manual De Instalación, Operación Y Mantenimiento

TROUBLE
1. The unit does not start.
2. Fan does not operate. - Defective contactor or overload relay.
3. Compressor "groans" - Low voltage.
but does not start.
4. Compressors starts but - Defective compressor or contactors. - Test and replace.
does not operate
continuously
5. Noisy unit
6. Unit operates
continuously
but with low performance - Lack of refrigerant.
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
- Power failure.
- Improper voltage or out of the
admissible limits.
- Burnt control fuses.
- Open protective devices.
- Defective motor.
- Bad contact of the electric connections. - Check and tighten.
- Defective compressor motor.
- Phase failure.
- Compressor "locked".
- Rotation inversion of the condenser motor. - Check and correct.
- Insufficient thermal load
- Overload or overheating of the compressor - Check the operation of the protective
devices. Replace if necessary.
- Noisy compressor.
- Vibration in the refrigerant piping.
- Panels or metallic parts badly fixed.
- Excessive thermal load
(underdimensioned unit).
- Presence of non-condensates in
the system.
- Dirt in the condenser or evaporator.
- Defective compressor.

Eventual Abnormalities

PROCEDURE
- Check the power supply.
- Check fuses, disconnect and circuit
breakers.
- Check electric contacts.
- Check and correct the problem.
- Check short-circuits in the control,
wrong connection or defective
component. Correct and replace the
fuses.
- Check pressostat(s), flow switches,
relays and auxiliary contacts.
- Test and replace.
- Test and replace.
- Check and correct the problem.
- Replace the compressor.
- Check and correct the problem.
- Check and replace the compressor.
- Check project conditions.
- Check the voltage or lack of phase.
Correct the problem.
- Check the adjustment of the expansion
valve (evaporators 120,160 and 180).
- Check the temperature (or pressure)
in the suction and condensation.
- Check the adjustment of the
expansion valve.
- Check the internal noise. Replace if
necessary.
- Check the refrigerant charge. Adjust if
necessary.
- Check and correct.
- Check and fix.
- Check project conditions.
- Check and correct leaks. Add
refrigerant if necessary.
- Check and correct.
- Check and correct.
- Check compressor pressures and
currents. Replace if necessary.
7
47