BEFORE YOU CALL FOR SERVICE,

CHECK FOR PROBLEMS

THAT CAN BE EASILY SOLVED

If insufficient heating or cooling is suspected:

( ) Check for sufficient airflow. Check the air filter for dirt. Check for blocked return- or supply-air grilles. Be sure they are open and unobstructed. If these checks do not reveal the cause, call your servicing dealer.

If your unit is not operating at all, check the following list for easy solutions:

( ) Check to be sure that your thermostat temperature selec- tor is set above the indoor temperature during the heating sea- son, or below the indoor temperature during the cooling season. Be sure the SYSTEM switch in the proper HEAT or COOL position and not in the OFF position.

( ) Is the electrical supply switch ON? Are any fuses blown, or has the circuit breaker tripped?

( ) During the heating season, check the external manual shutoff valve. Is this lever parallel with the pipe, indicating that the valve is open? Or is the lever at the right angle, indicating that the valve is closed? If closed, has the gas been shut off for safety reasons? Otherwise, you may open the valve and follow the start-up procedures listed in this manual.

NOTE: Before proceeding with the next check, turn OFF the electrical power supply to the unit. Remove the control access door.

( ) During the heating season, check the control switch on the gas valve. Is it in the ON position? If it is not, be sure it has not been turned off for the purpose of safety. If no safety haz- ards are present, follow the start-up procedures in this manual.

( ) If your unit still fails to operate, call your servicing dealer for troubleshooting and repairs. Specify the model and serial numbers of your unit. (Record them in this manual in the space provided.) If the dealer knows exactly which unit you have, he may be able to offer suggestions over the phone, or save valu- able time through knowledgeable preparation for the service call.

IN CASE OF TROUBLE

If, after performing the above checks, unit performance is unsatisfactory, shut off the unit and call your dealer.

Dealer’s Name _____________________________________

Telephone No. ______________________________________

Unit Model ________________________________________

Unit Serial Number _________________________________

Copyright 2000 Carrier Corporation

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book

1

4

PC 111

Catalog No. 534-80017

Printed in U.S.A.

Form 48HJ-2SO

Pg 8

11-00

Replaces: 48GJ,HJ-1SO

Tab

1a

6a

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Carrier 48HJ004-014 specifications Case of Trouble
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48HJ004-014 specifications

The Carrier 48HJ004-014 series is a sophisticated line of rooftop HVAC units that are engineered for energy efficiency and superior temperature control. As part of Carrier's extensive range of commercial heating, ventilation, and air conditioning systems, these units are designed to cater to various applications, making them ideal for office buildings, retail spaces, and other commercial establishments.

One of the standout features of the Carrier 48HJ004-014 is its impressive energy efficiency. These units are equipped with advanced scroll compressors that optimize energy consumption while delivering reliable cooling and heating performance. The series boasts high SEER (Seasonal Energy Efficiency Ratio) and EER (Energy Efficiency Ratio) ratings, ensuring that businesses can manage their operational costs effectively.

In addition to energy efficiency, the 48HJ004-014 series incorporates innovative technologies that enhance performance. The units are designed with a multi-speed blower system that allows for precise airflow control, ensuring that indoor spaces maintain consistent and comfortable temperatures. This capability not only improves occupant comfort but also contributes to better energy management.

The Carrier 48HJ004-014 units are built with durability in mind. The robust construction includes a galvanized steel cabinet with a powder-coated finish, providing excellent resistance to corrosion and environmental stressors. This ensures a long lifespan for the equipment and minimizes maintenance needs, allowing businesses to focus more on their core operations.

Moreover, the series is equipped with advanced controls that simplify operation and improve efficiency. The intelligent control systems enable remote monitoring and management capabilities, allowing facility managers to adjust settings based on real-time conditions. This functionality is crucial for optimizing energy use and maintaining indoor air quality.

The Carrier 48HJ004-014 also prioritizes environmental considerations with options for environmentally friendly refrigerants, aligning with sustainability goals. The commitment to reducing carbon footprint while delivering high-performance heating and cooling solutions demonstrates Carrier's dedication to promoting greener technologies.

In summary, the Carrier 48HJ004-014 series stands out for its energy efficiency, innovative technologies, robust construction, and advanced control systems. This makes it a preferred choice for businesses seeking reliable and efficient HVAC solutions that enhance indoor comfort while also contributing to sustainable practices.
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