Canadian Spa UK
Gecko YJ3 Control Pack ( direct replacement for Gecko YJ2 Control pack )
Gecko YJ3 Control Pack ( direct replacement for Gecko YJ2 Control pack )
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Gecko YJ3 Control Pack has replaced YJ2
Gecko IN.YJ3 V3 Control Box tech sheet
The Gecko in.yj-3-V3 control system, the successor to the V2 version, is designed for small spas, offering enhanced functionality and greater flexibility. While maintaining the core features of its predecessor, the V3 version introduces LED indicators for troubleshooting and integrates the in.mix system for advanced light management.
This system is paired with the heat.wav.yj heater and comes equipped with three 230V relays, indicated by the number "3" in its name, allowing it to manage up to three spa components (note that a two-speed pump requires 2 relays).
Features:
Compact Design: The in.yj-3-V3 is exceptionally compact, making it perfect for tight installation spaces. It can even be mounted in a "portrait" orientation, adding versatility to its placement.
Common Relay Configurations:
The system also includes:
Configuration is straightforward, done through the keyboard by selecting one of the pre-programmed options. If you have any questions about the setup or specific configurations, feel free to contact us for assistance.
Control Box (IN.YJ-3 V3)
| Specification | Value |
|---|---|
| Dimensions (W x H x D) | 308mm x 186mm x 96mm |
| Enclosure Material | High-impact plastic |
| IP Rating | IPX5 (watertight) |
| Heater Connection | 2" socket union sleeves |
| Mounting Options | Portrait or landscape orientation |
| Operating Temperature | 0°C to 58°C (32°F to 136°F) |
| Storage Temperature | -25°C to 85°C (-13°F to 185°F) |
| Humidity Range | Up to 85% RH, non-condensing |
Topside Panel (IN.K300)
Compatible Models:
| Panel Model | Compatible | Notes |
|---|---|---|
| IN.K8 | ✅ Yes | 8-key overlay panel |
| IN.K200 | ✅ Yes | LED display, 4 keys |
| IN.K300 | ✅ Yes | LCD display, 4 keys (included) |
| IN.K336 | ✅ Yes | Colour LCD, 5 keys |
| IN.K450 | ✅ Yes | LCD display, 7 keys |
| IN.K500 | ✅ Yes | Colour LCD, 7 keys |
| IN.K600 (simplified) | ✅ Yes | LCD display, simplified interface only |
| IN.K800 | ✅ Yes | Colour LCD, 10 keys |
| IN.K1000 / IN.K1001 | ✅ Yes | Colour LCD capacitive touchscreen |
Auxiliary Keypad
| Panel | Compatible | Notes |
|---|---|---|
| IN.K120 | ✅ Yes | Auxiliary keypad for secondary location |
in.touch 3 Compatibility
| Control System | Compatible |
|---|---|
| IN.YJ V2 | ✅ Yes |
| IN.YJ V3 | ✅ Yes |
| IN.YE V2/V3 | ✅ Yes |
| IN.YT V2 | ✅ Yes |
Control box IN.YJ IN.YJ-3

Electrical Requirements
| Requirement | Specification |
|---|---|
| Supply Voltage | 230V AC nominal |
| Frequency | 50 Hz |
| RCD | Maximum 30mA residual current |
| Single-Phase | Up to 40A max |
| Dual-Phase | Up to 20A max per phase |
| Bonding | Copper conductor to bonding lugs |
Mounting Options
The IN.YJ-3 can be mounted in two orientations:
- Landscape - Standard horizontal mounting
- Portrait - Vertical mounting for narrow spaces

Buying and support guide
We supply the Gecko YJ3 Control Pack ( direct replacement for Gecko YJ2 Control pack ) with clear specs and UK support. Before you order, check it suits your spa model, size, connector type, power supply and access. This helps you avoid delays and returns.
Replacing a part? Match it to your spa's model and year where you can. For pumps, control packs, heaters, jets, covers, filters, topsides and plumbing, check the part number and connection type. Compare delivery time, warranty and support as well as price.
Running costs matter as much as the price you pay. Energy use, insulation, cover condition, filters and water care all affect long-term value. Replacing worn parts early and keeping the water moving and filtered can save on repairs.
Looking for a whole new tub rather than a part? Compare hot tubs, swim spas and saunas by seating, hydrotherapy, who will use it and the space you have.
Helpful links
- Hot tub parts and replacements
- Filters and water care
- Spa chemicals
- Spa accessories
- Replacement hot tub covers
- Hot tubs for sale
- Swim spas
- Home saunas
- Hot tub servicing and repairs
Quick questions
How do I check this part fits my spa?
Check the model name, model year, part number and connector style. If you're not sure, contact our support team before you buy.
Can you help with fitting?
Yes. For many products we can guide you through replacement and servicing, and tell you when a qualified technician is the better option.
Will this improve performance?
The right replacement part can improve reliability, water flow, heating and everyday performance.