The Immergas BASIC SOL V2 is a high-efficiency condensing boiler designed for residential heating and domestic hot water production. It features advanced modulation technology, integrated weather compensation, compatibility with solar thermal systems, low NOx emissions, a user-friendly control interface, and compact design. This manual covers safety warnings, installation, commissioning, operation, maintenance, and troubleshooting. Always follow local regulations and use qualified personnel for installation and service.
This appliance must be installed and serviced only by qualified personnel in accordance with local codes. Incorrect installation can cause injury, death, or property damage.
| Symbol | Meaning | Description |
|---|---|---|
| ⚠️ | General Warning | Indicates a potentially hazardous situation. |
| 🔥 | Fire Hazard | Risk of fire from flammable materials or gases. |
| ⚡ | Electric Shock Hazard | Danger from electrical components. |
| 💧 | Burn Hazard | Hot surfaces and water can cause burns. |
| 📖 | Refer to Manual | Essential instructions in this booklet. |
WARNING! Never block ventilation openings. Ensure combustion air supply is adequate. The boiler must be grounded. Isolate electrical supply before servicing.
Key components of the BASIC SOL V2 unit.
CAUTION! Do not remove casing panels. Internal components are under electrical and thermal stress.
Site selection, mounting, and system connection procedures.
WARNING! Flue must terminate in a safe location away from windows and air intakes. Condensate drain must be installed to a suitable waste.
Steps to be performed by the installer after installation.
CAUTION! Commissioning must be documented. Incorrect gas pressure can lead to unsafe operation and poor efficiency.
Description of the user interface and adjustable parameters.
Display Icons: Flame (heating active), Tap (DHW active), Radiator (central heating mode), Sun (solar contribution), Wrench (service required), Error Code (fault).
Buttons: On/Off, Mode (toggle between Heating Off/Summer/Winter), +/- (adjust temperature), Menu (access user settings).
User-Accessible Settings (via Menu):
Installer Menu (restricted): Accessed via code for advanced parameters.
How the boiler operates under different conditions.
Tip: For maximum efficiency, use lower heating flow temperatures where possible (e.g., with underfloor heating).
Regular maintenance is essential for safety, efficiency, and longevity. Must be performed annually by a qualified engineer.
| Task | Frequency | Procedure |
|---|---|---|
| Visual Inspection | Annually | Check for leaks, corrosion, flue integrity, ventilation. |
| Combustion Analysis | Annually | Measure and adjust CO2, CO, and efficiency. |
| Heat Exchanger Cleaning | Annually | Inspect and clean condensate trap and primary exchanger. |
| Burner Inspection | Annually | Check and clean burner head and electrode. |
| Pump Check | Annually | Ensure free movement, lubricate if necessary (non-sealed types). |
| System Water Quality | Every 5 years | Check inhibitor concentration; flush if contaminated. |
| Safety Device Test | Annually | Test pressure relief valve and other safety functions. |
CAUTION! Use only original Immergas spare parts. Unauthorized modifications void the warranty.
| Code | Description | Possible Cause | Action |
|---|---|---|---|
| E01 | Ignition Failure | No gas, faulty electrode, gas valve issue. | Check gas supply, ignition leads. Call engineer. |
| E03 | Flame Loss During Operation | Poor gas pressure, flame detection fault. | Check gas meter valve. Call engineer. |
| E10 | Flow NTC Sensor Fault | Sensor disconnected, shorted, or out of range. | Check sensor connection. Replace if faulty. |
| E12 | High Temperature Limit Trip | Low water flow, pump fault, scaled heat exchanger. | Check system pressure, pump operation. Descale if needed. |
| E20 | Water Pressure Sensor Fault | Sensor fault or system pressure too low/high. | Top up system to 1.2 bar. Check sensor. |
| E35 | Fan/Flue Fault | Blocked flue, fan not starting, air pressure switch fault. | Check for flue obstructions. Call engineer. |
| E90 | PCB Communication Error | Internal control fault. | Power cycle boiler. If persistent, replace PCB. |
User Actions Before Calling Engineer: 1. Check system pressure (1.0-1.5 bar). 2. Check power is on. 3. Reset boiler by switching off/on. 4. Check for error code description in this manual.
Service: Contact a qualified Immergas service technician. Do not attempt internal repairs.
Warranty: Immergas provides a standard warranty of 24 months on the boiler and up to 5 years on the heat exchanger (registration required). The warranty is valid only if installed and serviced by an authorized installer according to instructions. It does not cover damage from incorrect installation, misuse, lack of maintenance, or scale in hard water areas.
Disposal (End of Life): This appliance is marked according to European Directive 2012/19/EU on Waste Electrical and Electronic Equipment (WEEE). Do not dispose of with household waste. The symbol of the crossed-out wheeled bin indicates separate collection is required. Contact your local authority or an authorized disposal company for environmentally safe recycling and disposal of materials.
For technical support, warranty registration, or to find an installer: Visit www.immergas.com or contact your local Immergas branch.