48/50PD

 

 

APPENDIX B - VFD INFORMATION (CONT)

 

 

Table 41 — FAULT CODES (cont)

 

 

 

FAULT

FAULT NAME IN PANEL

DESCRIPTION AND RECOMMENDED CORRECTIVE ACTION

CODE

 

 

 

 

 

1000

 

Parameter values are inconsistent. Check for any of the following:

 

 

2001 MINIMUM SPEED > 2002 MAXIMUM SPEED

 

 

2007 MINIMUM FREQ > 2008 MAXIMUM FREQ

 

PAR HZRPM

2001 MINIMUM SPEED / 9908 MOTOR NOM SPEED is outside of the range: ---128/+128

 

 

2002 MAXIMUM SPEED / 9908 MOTOR NOM SPEED is outside of the range: ---128/+128

 

 

2007 MINIMUM FREQ / 9907 MOTOR NOM FREQ is outside of the range: --- 128/+128

 

 

2008 MAXIMUM FREQ / 9907 MOTOR NOM FREQ is outside of the range: --- 128/+128

 

 

 

1001

PAR PFA REFNG

Parameter values are inconsistent. Check that 2007 MINIMUM FREQ is negative, when 8123 PFA ENABLE is active.

 

 

 

1002

 

Parameter values are inconsistent. The number of programmed PFA relays does not match with Interlock

 

PAR PFA IOCNF

configuration, when 8123 PFA ENABLE is active. Check consistency of RELAY OUTPUT parameters 1401 through

 

1403, and 1410 through 1412. Check 8117 NR OF AUX MOTORS, 8118 AUTOCHANGE INTERV, and 8120

 

 

 

 

INTERLOCKS.

 

 

 

1003

PAR AI SCALE

Parameter values are inconsistent. Check that parameter 1301 AI 1 MIN > 1302 AI 1 MAX and that parameter 1304 AI

 

2 MIN > 1305 AI 2 MAX.

 

 

 

 

 

1004

PAR AO SCALE

Parameter values are inconsistent. Check that parameter 1504 AO 1 MIN > 1505 AO 1 MAX and that parameter 1510

 

AO 2 MIN > 1511 AO 2 MAX.

 

 

 

 

 

1005

 

Parameter values for power control are inconsistent: Improper motor nominal kVA or motor nominal power. Check the

 

 

following parameters:

 

PAR PCU 2

1.1 < (9906 MOTOR NOM CURR * 9905 MOTOR NOM VOLT * 1.73 / PN) < 2.6

 

 

Where: PN = 1000 * 9909 MOTOR NOM POWER (if units are kW) or PN = 746

 

 

* 9909 MOTOR NOM POWER (if units are HP, e.g., in US)

 

 

 

1006

PAR EXT RO

Parameter values are inconsistent. Check the extension relay module for connection and 1410 through 1412 RELAY

 

OUTPUTS 4 through 6 have non---zero values.

 

 

 

 

 

1007

PAR FBUS

Parameter values are inconsistent. Check that a parameter is set for field bus control (e.g., 1001 EXT1 COMMANDS =

 

10 (COMM)), but 9802 COMM PROT SEL = 0.

 

 

 

 

 

1008

PAR PFA MODE

Parameter values are inconsistent. The 9904 MOTOR CTRL MODE must = 3 (SCALAR SPEED) when 8123 PFA

 

ENABLE activated.

 

 

 

 

 

1009

 

Parameter values for power control are inconsistent or improper motor nominal frequency or speed. Check for both

 

PAR PCU 1

of the following:

 

1 < (60 * 9907 MOTOR NOM FREQ / 9908 MOTOR NOM SPEED < 16

 

 

 

 

0.8 < 9908 MOTOR NOM SPEED / (120 * 9907 MOTOR NOM FREQ / Motor poles) < 0.992

 

 

 

1010

OVERRIDE/PFA

Override mode is enabled and PFA is activated at the same time. This cannot be done because PFA interlocks cannot

 

CONFLICT

be observed in the override mode.

 

 

 

88

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Carrier 48/50PD05 manual 1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007, 1008, 1009, 1010
Page 87 Page 89

48/50PD05 specifications

The Carrier 48/50PD05 is a remarkable addition to Carrier's lineup of rooftop units, offering advanced cooling and heating solutions for commercial applications. Designed for medium-sized buildings, this unit is well-suited for both new installations and as a replacement for older systems, thanks to its versatile features and efficient performance.

One of the standout features of the 48/50PD05 is its energy efficiency. It incorporates state-of-the-art technology to achieve high Seasonal Energy Efficiency Ratios (SEER) and EER ratings, reducing operational costs while delivering superior comfort. The unit is also compliant with the latest energy regulations, making it an environmentally friendly choice for building owners concerned about sustainability.

The 48/50PD05 is equipped with a highly efficient scroll compressor, which not only enhances performance but also contributes to quiet operation. This is a significant advantage in commercial spaces where noise levels need to be kept in check for comfort and productivity. Additionally, the unit includes advanced airflow design, ensuring even distribution of conditioned air throughout the space.

Technologically, the Carrier 48/50PD05 features Carrier's Infinity Control system, which allows for precise control of indoor climate. This intelligent control mechanism can be integrated with smart building management systems, enabling users to monitor and manage energy use effectively. Wi-Fi connectivity is also available, providing remote access for real-time adjustments and diagnostics.

Durability is another characteristic of the 48/50PD05. Constructed with high-quality materials, the unit withstands various environmental conditions, ensuring longevity and reliability. Moreover, the modular design facilitates easy maintenance, making service procedures efficient and cost-effective.

In addition to cooling, the Carrier 48/50PD05 offers heating capabilities, often utilizing gas or electric heating options that can be tailored to the specific needs of a building. The unit can also be equipped with integrated economizers, allowing for free cooling during suitable outdoor conditions, further enhancing energy savings.

Overall, the Carrier 48/50PD05 stands out as a high-performance HVAC solution that combines efficiency, technology, and durability. It provides building owners with a versatile tool to ensure comfort while minimizing their environmental footprint. With a strong emphasis on energy savings and advanced control features, this rooftop unit is a smart investment for any commercial property.
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