SystemAir SYSCROLL 20-30 Air EVO HP

Questions and Answers

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Scott PaulAug 18, 2025
How to troubleshoot excessive noise in my SystemAir Heat Pump?
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  Troy PorterAug 18, 2025
  If your SystemAir Heat Pump is making excessive noise, start by checking the clamping brackets of the lines for vibration. If the noise is a whistler emitted by the thermostatic expansion valve, consider refilling. Inspect the dehydrating filter. If the compressor is noisy, it may have seized bearings, requiring a compressor replacement. Also, ensure that the compressor’s locknuts are tightened.
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Deborah LozanoAug 21, 2025
What to do if my SystemAir Heat Pump activates the HP alarm and stops?
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  Tina JordanAug 21, 2025
  If your SystemAir Heat Pump activates the HP alarm and stops, it could be due to several reasons. Check the operation of the pressure switch, and replace it if it’s defective. Ensure that the delivery valve is fully open; if it’s faulty, replace it. If there are substances with condensable gases in the circuit, drain the circuit. Also, check the condenser fan's cables and motor; if they are defective, repair or replace them.
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Emily GomezAug 25, 2025
Why is my SystemAir Heat Pump running but not cooling?
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  Stephanie McintyreAug 25, 2025
  If your SystemAir Heat Pump continues to work but isn't cooling, it could be due to an insufficient charge of refrigerant, in which case you should refill it. Alternatively, the dehydrating filter might be clogged, requiring replacement.
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William ReynoldsAug 27, 2025
Why is the liquid line too hot on my SystemAir Heat Pump?
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  laurasullivanAug 28, 2025
  If the liquid line of your SystemAir Heat Pump feels too hot, it likely indicates an insufficient charge of refrigerant. Identify and remove the cause of the loss of charge, then refill the system.
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Ana BoyerAug 31, 2025
What causes the LP alarm and unit stop in my SystemAir Heat Pump?
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  Christine GutierrezAug 31, 2025
  If your SystemAir Heat Pump activates the LP alarm and stops, it may be due to a gas leak; identify and remove the leak. It could also be caused by an insufficient charge, requiring a refill.
J
Joshua HopkinsSep 3, 2025
Why is there ice on the suction line of my SystemAir Heat Pump?
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  Regina NewmanSep 3, 2025
  If you notice ice forming on the suction line of your SystemAir Heat Pump, it could be due to a wrong calibration of overheating; increase overheating to resolve this. Also you should check the charge.
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Michael LaneSep 7, 2025
What causes frosting on the liquid line of my SystemAir Heat Pump?
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  Linda DanielSep 7, 2025
  If you notice frosting on the liquid line of your SystemAir Heat Pump, it may be because the valve of the liquid line is partially closed; ensure that all valves are fully open. Alternatively, the liquid filter could be clogged, requiring replacement of the cartridge or the filter itself.
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Rebecca FisherSep 10, 2025
What causes low oil level in the compressor of my SystemAir Heat Pump?
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  Tiffany BradySep 10, 2025
  If you observe a low oil level in the compressor of your SystemAir Heat Pump, it could be due to one or more gas or oil leaks in the circuit; identify and remove these leaks. It may also indicate a mechanical failure of the compressor, requiring intervention from a Service Centre. Another potential cause is an anomaly of the oil heater of the compressor’s base; check the electric circuit and the resistor of the heater of the motor base, and replace any defective components.
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Kimberly MortonNov 13, 2025
What to do if one or both compressors are not working in my SystemAir Heat Pump?
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  Raymond MckenzieNov 13, 2025
  If one or both compressors in your SystemAir Heat Pump aren't working, several issues could be the cause. First, check the electric circuit for any ground dispersions and short circuits, and inspect the fuses. If the HP pressure switch has intervened, reset it along with the control panel, then restart the appliance, making sure to identify and remove the cause that enabled the pressure switch. Also, check for loosened terminals and tighten them. If there's a halt due to thermal overload, check the operation of check and safety devices and remove the cause. Confirm that the wiring of check and safety devices is correct. Ensure the line voltage is adequate; if it's too low, address the system issues or inform the Energy Distributor if the problem is with the distribution network. Furthermor...

Summary

1 - FOREWORD

1.1 Introduction

General introduction to the unit and its capabilities.

1.2 Warranty Conditions

Details warranty conditions and exclusions for the unit.

Emergency and Normal Stop Procedures

Explains the procedure for stopping the unit.

Manual Conventions and Safety Notes

Outlines conventions and safety warnings used in the manual.

2 - SAFETY

2.1 Foreword and Compliance

General safety considerations and regulatory compliance for unit installation.

Safety Conventions and Precautions

Explanation of safety signs, conventions, and general precautions.

Residual Risks and Maintenance Safety

Precautions against residual risks and safety for maintenance operations.

Safety Labels, Handling, and Refrigerant Regulations

Explanation of safety labels, handling, and R410A safety regulations.

Lubricant Oil Safety and Electrical Warnings

Safety data for lubricant oil and electrical connection warnings.

3 - TRANSPORT, HANDLING AND STORAGE

Unit Inspection and Handling

Procedures for inspecting and safely lifting/handling the unit.

Anchoring and Storage Precautions

Guidance on securing the unit and storing it safely.

4 - INSTALLATION

Installation Site Selection

Criteria for selecting an appropriate installation location for the unit.

External Water Circuit Requirements

Requirements for the unit's external water circuit and components.

Water Connections and Drainage

Procedures for water connections and defrost water drainage.

Water Buffer Tank Kit

Details and features of the water buffer tank kit.

Power Supply Connection

Requirements for the unit's power supply connection.

Electrical Connection Procedures

General rules and warnings for electrical connections.

Electrical Connection Diagrams

Wiring diagrams for remote controls and alarms.

5 - START-UP

Preliminary Checks and Start-up Sequence

Essential pre-start checks and the step-by-step start-up process.

Operation Verification and Customer Delivery

Procedures for checking operation and delivering the unit to the customer.

6 - CONTROL

Control System Overview

Introduction to the control system, its features, and keypad functions.

Alarms and Menu Navigation

How alarms are managed and how to navigate control menus.

User, In-out, Digital and Analog Data

Details on user settings, input/output readings, and digital/analog data.

Digital Outputs, Analog Outputs, and Compressor Data

Information on system outputs and compressor parameters.

Clock Settings and Alarm List

Procedures for setting clock and a comprehensive list of alarm codes.

7 - PRODUCT DESCRIPTION

General Information, Body, and Frame

Overview of unit capabilities, construction, and frame details.

Compressors and Evaporators

Description of unit compressors and stainless steel plate evaporators.

Condensing Coils, Fans, and Refrigerating Circuits

Details on condenser coils, fans, fan control, and refrigeration circuits.

Available Accessories

Lists and describes optional accessories for the unit.

Refrigerant Flow Diagram

Diagram illustrating the unit's refrigerant flow path and components.

8 - TECHNICAL DATA

Hydraulic Features and Pressure Drops

Graphs detailing pump and circuit pressure drops.

Physical Data Summary

Table of physical specifications including refrigerant, compressor, and dimensions.

Electrical Data Summary

Table of electrical specifications for the unit, compressor, fans, and pump.

Dimensional Drawings and Hydrokit Dimensions

Drawings showing unit and hydrokit dimensions and labels.

Space Requirements

Diagram showing minimum clearance space required around the unit.

9 - MAINTENANCE

General Requirements and Planned Maintenance

General requirements and the schedule for planned maintenance inspections.

Refrigerant Charge and Compressor Care

Procedures for refrigerant charging and compressor maintenance.

Condenser, Fans, and Filter Maintenance

Instructions for cleaning condensers, maintaining fans, and checking filters.

Sight Glass, Expansion Valve, and Evaporator Checks

Procedures for checking sight glass, expansion valve, and evaporator.

10 - TROUBLESHOOTING

Unit Anomalies, Causes, and Corrective Actions

Table listing common unit anomalies, their causes, and corrective operations.

11 - SPARE PARTS

Recommended Spare Parts List

List of recommended spare parts for the first two years of operation.

Compressor Oil and Wiring Diagrams

Information on compressor oil type and the location of wiring diagrams.

12 - DISMANTLING, DEMOLITION AND SCRAPPING

General Dismantling Procedures

General procedures for dismantling the unit safely.

RAEE Directive and Component Disposal

Procedures for unit disposal and recycling according to RAEE Directive.