Status Indicator LED

 

 

 

 

STATUS INDICATOR LED

 

 

ERRORS

E 1

-

Room temperature sensor shorted, open or not installed

 

 

 

 

E 2

-

Defrost temperature sensor shorted, open or not installed

 

 

 

 

E 3

-

Suction temperature sensor shorted, open or not installed

 

 

 

 

E 4

-

Suction pressure transducer shorted, open or not installed

 

 

 

 

E 5

-

Outdoor temperature sensor shorted

 

 

 

 

E 6

-

Low superheat during cooling

 

 

 

 

E 7

-

Compressor shutdown

 

 

 

 

E 9

-

(high or low refrigerant pressure or low oil pressure)

 

 

 

 

Multi-in/Multi-out wiring error

 

 

 

 

 

 

 

 

OTHERS

Coo -

Room Temperature sensor open or not connected

 

 

 

 

Loc -

(Instead of displaying box temperature)

 

 

 

 

Board is locked. Settings cannot be changed

 

 

 

 

UnL -

Unlock the board settings

 

 

 

 

 

 

 

 

Low Ambient Operation

All units are shipped standard with Head Master valves. (Scroll compressor units have a 100 PSI Head Master

valve and all other systems have a 180 PSI head master valve.) Condensing units with multiple condenser fans will have one or more fans cycle on Pressure Fan Cycling

switch.

An adjustable Time Delay relay, factory set at 1 minute, is wired across the Low Pressure switch (LPS). In cold ambient this allows time for the suction pressure to build up and prevent nuisance tripping of the LPS.

Pumpdown

When any of these three conditions occurs the compressor will turn off and not restart until there is a call for cooling or a periodic pumpdown.

Periodic Pumpdown

While in the OFF cycle, if there isn’t a call for cooling (Box setpoint temperature is met) but:

The evaporator suction pressure has risen to 10 psig

The low pressure switch has closed

At the end of each cooling cycle, when the box temperature is met, the Beacon system will pump down and shut off the compressor.

To pumpdown, the EEV closes and the compressor runs until one of the following occurs:

The low pressure switch opens

The suction pressure at the evaporator is 4 psig

A total of two minutes has elapsed

The system will initiate pumpdown. This periodic pumpdown will occur at 4 minute intervals when these two conditions are met.

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Heatcraft Refrigeration Products H-IM-79E manual Status Indicator LED, Low Ambient Operation, Periodic Pumpdown

H-IM-79E specifications

Heatcraft Refrigeration Products has long been a leader in eco-friendly and efficient cooling solutions, and the H-IM-79E is a prime example of their commitment to innovation and sustainability. Designed for commercial use, the H-IM-79E is a high-performance refrigeration unit ideal for supermarkets, convenience stores, and restaurants, where reliable temperature control is essential.

One of the standout features of the H-IM-79E is its energy efficiency. This unit employs advanced compressor technology that optimizes power consumption without sacrificing cooling performance. In addition, it is designed to minimize operational costs, making it an attractive option for businesses looking to reduce their energy bills while maintaining high standards of refrigeration.

The H-IM-79E integrates a robust refrigerant management system that uses environmentally friendly refrigerants, aligning with Heatcraft's commitment to reducing the carbon footprint of their products. This not only helps businesses comply with environmental regulations but also promotes a healthier planet for future generations.

Another key characteristic of the H-IM-79E is its superior temperature stability. The unit is equipped with precision temperature control technology that ensures consistent cooling performance, preventing temperature fluctuations that can compromise food quality and safety. This reliability is crucial in commercial settings where maintaining optimal storage conditions is essential.

The design of the H-IM-79E is also noteworthy. It features a compact footprint, allowing it to fit seamlessly into various commercial environments without taking up valuable floor space. Additionally, the unit is built with durable materials, ensuring longevity and minimizing maintenance needs.

User-friendly interfaces make the H-IM-79E easy to operate. It includes advanced monitoring and diagnostics capabilities, allowing business owners to track performance in real-time and address potential issues before they escalate. The incorporation of smart technologies means that operators can remotely monitor and control the system, providing flexibility and peace of mind.

In summary, the Heatcraft Refrigeration Products H-IM-79E stands out for its energy efficiency, eco-friendly refrigerant use, reliable temperature control, compact design, and user-friendly features. This combination of attributes makes it an ideal choice for businesses that prioritize both sustainability and performance in their refrigeration needs.