Koldwave 5AK39BFA, Инструкция по установке, эксплуатации и обслуживанию, Страница: 26 / 32

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Trouble Shooting Guide Continued
GENERAL TROUBLESHOOTING
Electric shock from unit. 1 Grounded electric circuit. 1 An ungrounded wire or component is touching the unit
casing. Use an ohmmeter or hipot tester to find trouble.
Replace or rewire.
2 Ungrounded unit. 2 The units must be connected to a grounding system.
Cycle too long or unit operates
continuously. 1 Condenser dirty, clogged or restricted. 1 Clean condenser.
2 Compressor motor or mechanism defective. 2 Replace compressor
3 Air or non-condensable gases in system. 3 Recover refrigerant, install filter/drier, evacuate system
and weigh in proper charge of virgin refrigerant.
4 Drier restricted. 4 Replace restricted drier.
5 Compressor contactor stuck closed. 5 Replace contactor.
6 Low refrigerant charge. 6 Locate refrigerant leak, recover refrigerant, repair leak,
install filter/drier, evacuate system and weigh in proper
charge.
7 Improper unit installation. 7 Check for airflow restrictions and objects blocking front
of unit
8 Unit too small for its application. 8 Replace with larger unit.
9 High ambient temperature 9 Install condenser air intake kit to draw air from another
area
10 Leak in system 10 Locate refrigerant leak, recover refrigerant, repair leak,
install filter/drier, evacuate system and weigh in proper
charge.
11 Dirty air filter (air flow restricted) 11 Clean air filter .
COMPRESSOR TROUBLESHOOTING
Compressor starts and runs but
cycles on overload 1 Low voltage 1 Check power supply for proper voltage at unit plus or
minus 10% of rated nameplate voltage.
2 Capacitor incorrect or defective 2 Check capacitance and replace if necessary.
3 Condenser dirty, clogged or restricted 3 Clean condenser coil.
4 Compressor grounded 4 Check compressor windings to ground. Replace
compressor if shorted.
5 Air or non-condensable gases in system 5 Recover refrigerant, install filter/drier, evacuate system
and weigh in proper charge of virgin refrigerant.
6 Wiring incorrect or defective 5 Tug on wires to see if they will separate from
connections.
7 High head-pressure 7 Clean coils and filter, check system pressures
8 Drier restricted 8 Replace restricted drier.
9 Overload protector incorrect or defective 9 Replace as necessary.
10 Refrigerant overcharged 10 Recover entire refrigerant charge and weigh in proper
charge.
Compressor tries to start when
thermostat closes, but cuts out
on overload; finally starts after
several attempts 1 Low voltage 1 Check voltage at wall outlet. Must be
within 10% of nameplate rating
voltage.
2 Compressor capacitor incorrect or defective 2 Check capacitance and replace if necessary.
3 Compressor motor requires start assist 3 Unit is equipped with hard start capacitor. Check
capacitance and replace if necessary.
4 Air or non-condensable gases in system 4 Recover refrigerant, install filter/drier, evacuate system
and weigh in proper charge of virgin refrigerant.
5 Drier restricted 5 Replace restricted drier.
6 Refrigerant system not equalized. 6 The unit was programmed at the factory with a 5 minute
time delay between compressor starts. If the compressor
cycles more frequently, contact factory.
7 Discharge line restricted 7 Repair as necessary.