1. Introduction
This manual provides essential information for the installation, operation, maintenance, and troubleshooting of your ACiQ 1.5 Tons 15.2 SEER2 Central Inverter Heat Pump System. Please read this manual thoroughly before installation and operation to ensure safe and efficient use of the product.
Key Features:
- Inverter Heat Pump: Converts AC power to DC, adjusting compressor speed and BTU output for changing weather conditions. Equipped with sensors to monitor and control temperature, system performance, duct pressure, and refrigerant temperature. Optimizes efficiency through learning during startup.
- Evaporator Coil: A cased multi-positional coil designed for versatility, maintaining the unit's efficiency with a factory-integrated TXV kit for enhanced energy optimization.
- Smart Thermostat: Includes a Cielo Smart Thermostat, offering advanced technology and user convenience for creating comfortable and energy-efficient environments.

Figure 1.1: Overview of the ACiQ Central Inverter Heat Pump System components.
2. Setup and Installation
Installation of this ACiQ Central Inverter Heat Pump System requires specialized knowledge and tools. It is mandatory that the unit be installed by a qualified HVAC technician to ensure proper function, safety, and warranty validity. Improper installation can lead to system malfunction, property damage, and void the product warranty.
Key Installation Considerations:
- Professional Installation: Always engage a certified HVAC technician for installation.
- Evaporator Coil Placement: The cased multi-positional coil is designed for flexible installation in various orientations (upflow, downflow, horizontal). Ensure adequate clearance for airflow and maintenance.
- Thermostat Integration: The included Cielo Smart Thermostat should be wired and configured according to its specific instructions and integrated with your home's Wi-Fi network for full smart features.
- System Sizing: Ensure the system's capacity (1.5 Tons) is appropriate for the conditioned space.

Figure 2.1: Product dimensions for installation planning.
3. Operating Instructions
Your ACiQ system is controlled by the included Cielo Smart Thermostat, designed for intuitive operation and energy efficiency. Once installed and configured by a professional, you can manage your home's climate with ease.
Using the Smart Thermostat:
- Temperature Control: Adjust the desired temperature directly on the thermostat's display or via the associated mobile application.
- Mode Selection: Switch between heating, cooling, fan-only, and auto modes as needed.
- Scheduling: Utilize the thermostat's scheduling features to program temperature changes throughout the day or week, optimizing comfort and energy savings.
- Remote Access: Control your system from anywhere using the mobile app, allowing you to adjust settings before you arrive home or while away.
- Smart Home Integration: The thermostat supports integration with popular smart home platforms like Alexa, Hey Google, Siri, SmartThings, and IFTTT for voice control and advanced automation.

Figure 3.1: The Cielo Smart Thermostat interface.

Figure 3.2: Detailed features of the Smart Thermostat.
4. Maintenance
Regular maintenance is crucial for the longevity, efficiency, and optimal performance of your ACiQ heat pump system. Adhering to a maintenance schedule can prevent costly repairs and ensure consistent comfort.
Recommended Maintenance Practices:
- Air Filter Replacement: Check and replace or clean the air filter in your indoor unit every 1-3 months, or more frequently if you have pets or allergies. A clean filter ensures proper airflow and system efficiency.
- Outdoor Unit Cleaning: Periodically clear away debris, leaves, and dirt from around the outdoor condenser unit. Ensure the coils are free from obstructions to allow for proper heat exchange.
- Professional Inspection: Schedule annual professional maintenance with a certified HVAC technician. They can inspect refrigerant levels, electrical connections, coil cleanliness, and overall system operation to identify and address potential issues before they become major problems.
- Drain Line Check: Ensure the condensate drain line is clear and free of clogs, especially during cooling season, to prevent water overflow.
5. Troubleshooting
Before contacting a service technician, review the following common issues and their potential solutions. For complex problems, always consult a qualified HVAC professional.
Common Issues and Solutions:
- No Power to Unit:
- Check the circuit breaker for the HVAC system in your electrical panel.
- Ensure the emergency shut-off switch (often near the indoor unit) is in the 'ON' position.
- System Not Heating/Cooling Effectively:
- Verify the thermostat is set to the correct mode (Heat/Cool) and desired temperature.
- Check and replace dirty air filters.
- Ensure outdoor unit is free of obstructions (leaves, debris).
- Confirm all vents and registers are open and not blocked.
- Unusual Noises:
- Minor noises are normal during operation. Loud or persistent noises (e.g., grinding, banging, squealing) may indicate a mechanical issue and require professional inspection.
- Water Leaks:
- Check the condensate drain line for clogs. Clear any blockages carefully.
- Ensure the indoor unit is level.
If these steps do not resolve the issue, contact a certified HVAC technician for diagnosis and repair.
6. Specifications
Detailed specifications for the ACiQ 1.5 Tons 15.2 SEER2 Central Inverter Heat Pump System.
General Specifications:
| Attribute | Value |
|---|---|
| Brand Name | ACiQ |
| Model Name | ACiQ-18-EHPB / ACIQ-24-ACL |
| Product Dimensions (Outdoor Unit) | 21"D x 55"W x 32"H |
| Material Type | Thermostat Only (referring to the included accessory) |
| Date First Available | September 13, 2024 |
| ASIN | B0DGYQ2H28 |
| Manufacturer | ACiQ |
Heat Pump Condenser Specifications:

Figure 6.1: Heat Pump Condenser detailed specifications.
Evaporator Coil Specifications:

Figure 6.2: Evaporator Coil detailed specifications.
AHRI Rating Conditions:

Figure 6.3: AHRI Rating Conditions and Energy Guide information.
7. Warranty and Support
ACiQ stands behind the quality of its products. Your heat pump system comes with a comprehensive warranty, provided certain conditions are met.
Warranty Conditions:
- Parts Warranty: 7-year warranty on parts.
- Compressor Warranty: 12-year warranty on the compressor.
- Activation Requirement: Warranty is valid when the unit is installed by a qualified technician and registered online with the manufacturer. There is no additional charge for registration.
For warranty claims or technical support, please refer to the contact information provided with your product packaging or visit the official ACiQ website.
Product Condition and Packaging:
ACiQ ensures that products are packaged with care to safeguard them during transit, employing industry best practices. Our warehouse operations prioritize precision and care in handling products.

Figure 7.1: ACiQ's commitment to product condition and packaging.
For more information and to explore other ACiQ products, visit the ACiQ Store on Amazon.





