McQuay MLCV Guia de Resolução de Problemas descarregar pdf (Página 46)

General Troubleshooting Guide - 2

When any air onditioner malfunction is noted, immediately switch off the power supply to the unit and contact the

local dealer, if necessary. Some simple trouble shooting tips are given below :

TROUBLE PROBABLE CAUSE SUGGESTED ACTION

1. Fan does not work 1. No power supply 1. Check power supply

2. Fan capacitor faulty 2. Contact local dealer

3. Fan motor faulty 3. Contact local dealer

4. Switch Faulty 4. Change switch

2. Fan work, but compressor 1. Thermostat setting too high 1. Reset thermostat

does not work 2. Compressor capacitor faulty 2. Contact local dealer

3. Compressor faulty 3. Contact local dealer

4. Compressor contactor faulty 4. Contact local dealer

3. Both fan and compressor 1. Power failure 1. Operate when power suppl resume

does not work 2. Starter trip 2. Reset starter

3. Fuse blown in power switch or 3. Check and replace fuse

operating unit

4. Air-Conditioner work but 1. Thermostat setting too high 1. Reset thermostat

cooling not satisfactory 2. Door and/ or windows not closed 2. Close door and/ or windows

3. Condenser coil dirty 3. Clean condenser coil

4. Some objects blocking the inlet 4. Remove the objects

and / or outlet of the unit

5. Refrigerant charge too low 5. Contact local dealer

Mini Chiller: Trouble Shooting Guide

When any malfunction is occurred, immediately switch off the power supply to the unit, and ontact the local dealer,

if necessary. Some simple trouble shooting tips are given below.

SYMPTOMS POSSIBLE CAUSES REMEDIAL ACTION

1. Compressor does not start * No powersupply. * Check power supply

* Fuses blown or automatic circuit * Look for short circuit or grounded wires

breakdown open in motor windings.

Replace fuses and reset circuit breakers

when the fault has been corrected.

Check tightness and soundness of all

electrical connection.

* Defective contactor or coil * Repair or replace.

* Unit is stopped because a safety * Determine the type of safety shut down

has tripped. and correct the unit is restarted.

* Loose wires * Check wire connection and tighten

terminal screw

* Compressor faulty * Contact local dealer

2. Fan does not * No powersupply. * Check power supply

* Fan motor faulty * Contact local dealer

3. Air conditioning does work, * Thermostat setting too high * Reset thermostat

but insufficient cooling * Condenser coil dirty * Contact local dealer

* Obstacle blocking air inlet or * Remove the obstacle

outlet of the unit

* Insufficient refrigerant in * Contact local dealer

the system

* improper water flow rate * Contact local dealer

* Water in the system is * Contact local dealer

contaminated

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