MicroLinks Tech H-CAM Instruções de Operação descarregar pdf (Página 145)

TM 11574A-OI

3-51

Step Probable Cause Remedy

5 Expansion valve setting too high. Lower setting.

If fault is not corrected proceed to step 6.

6 Iced or dirty evaporators. Defrost or clean evaporators.

e. Unit operates long or continuously.

Step Probable Cause Remedy

1 Low refrigerant charge. Add refrigerant.

If fault is not corrected proceed to step 2.

2 Control contacts fused. Replace controls.

If fault is not corrected proceed to step 3.

3 Air in system. Recover.

If fault is not corrected proceed to step 4.

4 Partially plugged or plugged expansion valve

or strainer.

Clean or replace expansion valve or

strainer.

If fault is not corrected proceed to step 5.

5 Defective insulation. Replace or repair insulation.

If fault is not corrected proceed to step 6.

6 Service load. Keep doors and windows closed.

If fault is not corrected proceed to step 7.

7 Inefficient compressor. Check valves.

If fault is not corrected proceed to step 8.

8 Condenser scaled. Clean condenser.

If fault is not corrected proceed to step 9.

9 Restricted evaporator air. Defrost coil, clean filters and ductwork.

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MicroLinks Tech H-CAM Instruções de Operação Página 145