50VL-- A

Table 10 – Troubleshooting Chart

SYMPTOM

CAUSE

REMEDY

 

 

 

 

Power failure

Call power company

 

Fuse blown or circuit breaker tripped

Replace fuse or reset circuit breaker

 

Defective contactor, transformer, control relay, or high--

Replace component

Compressor and outdoor fan will not start

pressure, loss--of--charge or low--pressure switch

 

 

Insufficient line voltage

Determine cause and correct

 

Incorrect or faulty wiring

Check wiring diagram and rewire correctly

 

Thermostat setting too low/too high

Reset thermostat setting

 

Faulty wiring or circuit

Check wiring and repair or replace

 

Loose connections in compressor

 

 

 

 

 

 

Compressor motor burned out, seized, or

Determine cause

Compressor will not start but condenser fan

internal overload open

Replace compressor

 

 

Defective run capacitor, overload, or PTC (positive

 

runs

Determine cause and replace

temperature coefficient) thermistor

 

 

 

 

 

 

One leg of 3--phase power dead

Replace fuse or reset circuit breaker

 

Determine cause

 

 

 

 

 

 

Low input voltage

Determine cause and correct

Three-phase scroll compressor (size 30-

Scroll compressor is rotating in the wrong direction

Correct the direction of rotation by reversing the

60 unit) has a low pressure differential

3--phase power leads to the unit

 

 

 

 

 

Refrigerant overcharge or undercharge

Recover refrigerant, evacuate system, and re-

 

charge to capacities shown on rating plate

 

 

 

 

 

 

Defective compressor

Replace and determine cause

Compressor cycles (other than normally

Insufficient line voltage

Determine cause and correct

satisfying) cooling/heating calls

Blocked outdoor coil

Determine cause and correct

 

Defective run/start capacitor, overload or start relay

Determine cause and replace

 

Faulty outdoor fan motor or capacitor

Replace

 

Restriction in refrigerant system

Locate restriction and remove

 

Dirty air filter

Replace filter

 

Unit undersized for load

Decrease load or increase unit size

 

Thermostat temperature set too low

Reset thermostat setting

Compressor operates continuously

Low refrigerant charge

Locate leak, repair, and recharge

 

Air in system

Recover refrigerant, evacuate system, and re-

 

charge

 

 

 

 

 

 

Outdoor coil dirty or restricted

Clean coil or remove restriction

 

Dirty air filter

Replace filter

 

Dirty indoor or outdoor coil

Clean coil

Excessive head pressure

Refrigerant overcharged

Recover excess refrigerant

Air in system

Recover refrigerant, evacuate system, and re-

 

 

charge

 

 

 

 

 

 

Indoor or outdoor air restricted or air short--cycling

Determine cause and correct

Head pressure too low

Low refrigerant charge

Check for leaks, repair and recharge

Restriction in liquid tube

Remove restriction

 

Excessive suction pressure

Refrigerant overcharged

Recover excess refrigerant

 

 

 

 

Dirty air filter

Replace filter

 

Low refrigerant charge

Check for leaks, repair and recharge

 

Metering device or low side restricted

Remove source of restriction

Suction pressure too low

Insufficient coil airflow

Check filter–replace if necessary

 

Temperature too low in conditioned area

Reset thermostat setting

 

Outdoor ambient below 55°F (13°C)

Install low--ambient kit

 

Filter drier restricted

Replace

 

 

 

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Carrier 50VL---A installation instructions Troubleshooting Chart, Symptom Cause Remedy
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50VL---A specifications

The Carrier 50VL---A is a powerhouse in the field of air conditioning and heating solutions, designed for residential and commercial applications. This unit exemplifies Carrier’s commitment to efficiency, reliability, and advanced technology. One of the standout features of the 50VL---A is its superior energy efficiency, which is reflected in its high Seasonal Energy Efficiency Ratio (SEER) and Heating Seasonal Performance Factor (HSPF) ratings. These ratings ensure reduced energy consumption and lower utility bills, making it an environmentally friendly choice.

The 50VL---A is designed with a robust scroll compressor that not only enhances performance but also minimizes noise levels during operation. This compressor is integral to the system’s ability to maintain a consistent temperature and humidity level within the space. The unit’s sound-dampening features contribute to a quieter environment, which is particularly important in residential settings.

One of the key technologies integrated into the Carrier 50VL---A is the advanced microprocessor control system. This technology allows for precise temperature adjustments and operational diagnostics, making maintenance easier and more efficient. This system ensures that the unit operates at optimal performance, adapting to changing environmental conditions with ease.

Moreover, the 50VL---A is equipped with a multi-speed blower motor that provides enhanced airflow and comfort. This feature allows users to select different cooling or heating levels according to their specific requirements, promoting customized comfort throughout the home or office.

In addition to its performance capabilities, the Carrier 50VL---A is also built with longevity and durability in mind. The cabinet is constructed from high-quality materials that offer resistance to corrosion and wear, ensuring the unit can withstand various weather conditions over time. Furthermore, the unit’s maintenance-friendly design allows for easy access to key components, simplifying servicing and prolonging the life of the system.

Overall, the Carrier 50VL---A stands out as a reliable and advanced solution for climate control. With its energy-efficient operation, quiet performance, and user-friendly features, it represents a significant investment in home comfort and efficiency. Whether for heating during the colder months or cooling in the summer, the 50VL---A delivers exceptional performance, making it a popular choice among users seeking quality HVAC solutions.
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