TROUBLESHOOTING

Cooling

SYMPTOM

CAUSE

REMEDY

 

 

 

Compressor and

Power failure

Call power company.

condenser fan will

 

 

Fuse blown or circuit breaker tripped

Replace fuse or reset circuit breaker.

not start.

Defective thermostat, contactor, transformer,

Replace component.

 

 

or control relay

 

 

 

 

 

Insufficient line voltage

Determine cause and correct.

 

Incorrect or faulty wiring

Check wiring diagram and rewire correctly.

 

Thermostat setting too high

Lower thermostat setting below room temperature.

Compressor will not

Faulty wiring or loose connections in

Check wiring and repair or replace.

start but condenser

compressor circuit

 

fan runs.

 

 

Compressor motor burned out, seized, or

Determine cause. Replace compressor.

 

internal overload open

 

 

Defective run/start capacitor, overload,

Determine cause and replace.

 

start relay

 

 

One leg of 3-phase power dead

Replace fuse or reset circuit breaker.

 

 

Determine cause.

Three-phase scroll

Scroll compressor is rotating in the

Correct the direction of rotation by reversing the

compressor (Units

wrong direction

3-phase power leads to the unit. Shut down unit to

588A048,060 and

 

allow pressures to equalize.

589A036-060 only)

 

 

makes excessive

 

 

noise, and there

 

 

may be a low pres-

 

 

sure differential.

 

 

Compressor cycles

Refrigerant overcharge or undercharge

Recover refrigerant, evacuate system, and

(other than normally

 

recharge to capacities shown on nameplate.

satisfying

 

 

Defective compressor

Replace and determine cause.

thermostat).

Insufficient line voltage

Determine cause and correct.

 

 

Blocked condenser

Determine cause and correct.

 

Defective run/start capacitor, overload

Determine cause and replace.

 

or start relay

 

 

Defective thermostat

Replace thermostat.

 

Faulty condenser-fan motor or capacitor

Replace.

 

Restriction in refrigerant system

Locate restriction and remove.

Compressor

Dirty air ®lter

Replace ®lter.

operates

 

 

Unit undersized for load

Decrease load or increase unit size.

continuously.

Thermostat set too low

Reset thermostat.

 

 

Low refrigerant charge

Locate leak, repair, and recharge.

 

Leaking valves in compressor

Replace compressor.

 

Air in system

Recover refrigerant, evacuate system, and recharge.

 

Condenser coil dirty or restricted

Clean coil or remove restriction.

Excessive head

Dirty air ®lter

Replace ®lter.

pressure.

 

 

Dirty condenser coil

Clean coil.

 

 

Refrigerant overcharged

Recover excess refrigerant.

 

Air in system

Recover refrigerant, evacuate system, and recharge.

 

Condenser air restricted or air short-cycling

Determine cause and correct.

Head pressure too

Low refrigerant charge

Check for leaks, repair and recharge.

low.

 

 

Compressor valves leaking

Replace compressor.

 

 

Restriction in liquid tube

Remove restriction.

Excessive suction

High heat load

Check for source and eliminate.

pressure.

 

 

Compressor valves leaking

Replace compressor.

 

 

Refrigerant overcharged

Recover excess refrigerant.

Suction pressure

Dirty air ®lter

Replace ®lter.

too low.

 

 

Low refrigerant charge

Check for leaks, repair and recharge.

 

 

Metering device or low side restricted

Remove source of restriction.

 

Insufficient evaporator air¯ow

Increase air quantity. Check ®lter Ð replace if

 

 

necessary.

 

Temperature too low in conditioned area

Reset thermostat.

 

Outdoor ambient below 40 F

Install low-ambient kit.

 

Field-installed ®lter-drier restricted

Replace.

Ð48Ð

Page 48
Image 48
Bryant 588A, 589A user manual Troubleshooting, Symptom Cause Remedy

589A, 588A specifications

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