DSIO

COMMUNICATIONS

LEDs

STATUS LED

ADDRESS

SELECTOR

PSIO

Fig. 83 Ð Module Address Selector Switch

and LED Locations

If only the PSIO slave or DSIO module indicate commu- nication failure, check the affected module for proper seat- ing. If the condition persists even though connections are correct, replace the module as described in the following section.

Module Replacement (PSIO, DSIO) Ð The PSIO master module controls the standard unit functions, the PSIO slave module controls many optional functions, and the DSIO module controls electric heat and/or DX cooling. If the mod- ule LEDs are not blinking and the unit or features associated with the module do not work, the module may need to be replaced. Before replacing an inoperative module, check to ensure that:

·The PIC control box power is on

·Power at the processor module is between 18 and 24 vac

·No fuses are blown

·All connections are ®rmly in place

If all of the preceding conditions exist, and the module LEDs are not blinking, the module needs to be replaced.

Before replacing a processor (PSIO) module, store the con- ®guration data from the old module on hard copy. The new processor module can be precon®gured or con®gured in the ®eld.

After obtaining a new module, ®eld-replace the inopera- tive module as follows:

1.Turn off all power to the fan motor starter and PIC con- trol box.

To avoid electrical shock and equipment damage, always disconnect all power to the control box be- fore replacing PIC modules.

2.Open the control box door.

3.Refer to Fig. 5-7 for control box component arrange- ments. Disengage all connectors from the module.

4.Use a screwdriver to remove the mounting screw securing the module to the control box. Remove the module.

5.Install the replacement module and replace the mount- ing screw.

6.Reinstall all connectors. Verify that each connector is in the correct location.

7.Turn on the power to the PIC control box and motor starter.

8.If you are replacing a PSIO master module that is not precon®gured, use the local interface device (HSIO) or Building Supervisor to reset the date and time and change the module's default settings. The original PSIO master module was factory con®gured to match the unit in which it was shipped. A replacement PSIO master mod-

ule must have the Factory Con®guration ( ) de- faults changed in the ®eld to match the con®guration of the unit in which it is being installed. Other settings may also need to be recon®gured to match the unit con- ®guration and/or the original module's settings.

9.Perform the Initial Check, run the Quick Test, and verify that the unit is operating correctly as described in the Start-Up section on page 103.

10.Close the PIC control box door.

112

Page 112
Image 112
Carrier 39L specifications Dsio

39L specifications

The Carrier 39L is a cutting-edge air conditioning unit designed for both residential and commercial applications, providing exceptional cooling and heating performance. Equipped with advanced technologies, this system ensures optimal climate control while maintaining energy efficiency.

One of the standout features of the Carrier 39L is its inverter technology. This innovation allows the system to adjust its compressor speed based on the ambient temperature, which results in a significant reduction in energy consumption. By operating at varying capacities rather than a fixed output, the 39L can maintain a consistent temperature, enhancing comfort while lowering electricity bills.

The Carrier 39L also includes a high-efficiency air filtration system, designed to capture dust, allergens, and other airborne particles. This not only improves indoor air quality but also promotes a healthier living environment. The filtration system is complemented by anti-bacterial treatment, ensuring that the air circulated within your space is both clean and refreshing.

In terms of design, the Carrier 39L boasts a sleek and compact form factor, making it easy to integrate into various settings, from homes to offices. Its quiet operation is another notable feature, as it minimizes noise levels, allowing occupants to enjoy a serene atmosphere without disruptive sound.

Further enhancing convenience, the Carrier 39L comes equipped with smart connectivity options. Users can control the unit remotely via a smartphone app, making it easy to adjust settings, program schedules, and monitor energy usage from anywhere. This feature not only improves user experience but also supports energy-saving practices.

Durability is also a key characteristic of the Carrier 39L. Constructed with high-quality materials and coated with corrosion-resistant treatments, the unit is built to withstand various environmental conditions. This ensures long-lasting performance and reduces the need for frequent maintenance.

Overall, the Carrier 39L is a versatile, efficient, and user-friendly air conditioning solution. Its blend of advanced technologies, energy-saving capabilities, and robust design makes it an ideal choice for those seeking reliable climate control in their spaces. Whether for residential comfort or commercial necessity, the Carrier 39L stands out as a leader in modern air conditioning.