Proper installation is essential to ensure your chiller starts up smoothly and operates without errors. Failure to follow these instructions can lead to system malfunctions or even damage.
Before you begin:
- Approved water additive: The only product recommended for water maintenance is food-grade hydrogen peroxide. Please visit our quick water maintenance guide here.
- We’ve seen cases where certain off-the-shelf sanitizers, like Sirona Simply Sanitizer and Ouster Cold Plunge Weekly Treatment, have caused internal corrosion and damage to cold plunge units. While we can’t speak to every ingredient in these products, experience shows they are not safe to use with your Icebound Pro Chiller.
- Built-in ozone system: Your unit already includes an integrated ozone system for water sanitation. Do not add any external ozone generator. Excess ozone can corrode internal components and void the warranty.
- Cold-weather caution: Do not operate the chiller in freezing conditions. For off-season storage and protection, follow the Winterization Guide.
During installation, pay close attention to the water-circulation connections:
- Every joint must have the correct O-ring in place.
- Wrap PTFE (Teflon) tape around all male-threaded connections, including plugs, to prevent leaks and maintain proper water flow.
For additional technical specifications, control-panel icons, and screen details, click on the link below
Now let's get started!
(follow each section as indicated)
Main Filter Assembly
- Make sure the filter house O-ring is in place (see image).
- Put a filter inside the clear filter housing.
- Fill the housing halfway with water.
- Screw the housing onto the filter base by hand. Use the filter wrench only if you ever need to take it apart
Strainer Installation
Chiller Inlet & Outlet
- Wrap PTFE tape around the threads on each port.
- Check that an O-ring is around the inlet port.
Strainer Base
- Separate the clear strainer housing from the black base.
- Screw the black base onto the inlet port until it’s almost hand-tight.
Final Assembly
- Attach clear strainer container
- Hand-tighten the assembly
- Check that the clear lid is pointing to the ground (4 to 8 o'clock position is acceptable)
Prepare Water Hoses & Fittings
- Thread prep: Always wrap PTFE tape around the male threads of every fitting or valve to prevent leaks or damage.
- Install fittings/valves: Hand-tighten them into the tub’s water inlet and outlet ports. Do not overtighten.
- If your tub has a third unused port, use the plug included in the repair kit. Also, use PTFE tape for the plug.
- Check that O-rings are inside both ends of each hose or on the male threads of each fitting.
We recommend installing a ball valve on each tub port, as this will simplify future maintenance and servicing of the equipment.
Connect the Hoses
- First hose
- Connect from the chiller’s WATER INLET (at the strainer) to the tub’s lower port.
- Tip: Fill this hose with water first so the strainer is completely full. This avoids air pockets.
2. Second hose
- Connect from the chiller’s WATER OUTLET to the tub’s upper port.
3. Fill the tub
- Add water until it’s above both water ports.
Power the Chiller
- Plug into a 120 V/15 A outlet (standard U.S.).
- Use a dedicated circuit. No power strips.
Test the Safety (GFCI) Plug
- Press Test: the light goes off.
- Press Reset: the light comes back on.
Turn It On
- Hold the unlock button on the LED panel.
- Set your desired temperature.
- Hold the power button to start.
Purge Air from Filter Housing
When you turn the chiller on, the pump will begin its priming cycle and may make brief gurgling sounds. Hold the red button on the main filter housing until it fills with water. The fan will start exactly one minute after startup.
Switch Between °C and °F
- Unlock the screen.
- Hold the mode (three lines) and + keys for 6 seconds.
- Use + to reach P08.
- Press unlock to edit.
- Choose: 0 = Celsius, 1 = Fahrenheit.
- Press unlock to save.
- Exit by holding mode + + for 6 seconds or wait 30 seconds.
You can also easily change the temperature unit without entering the factory settings:
- Unlock the chiller (if it's locked).
- Press and hold the “+” button and the “Unlock” button at the same time.
- Hold for about 3 seconds until the display switches between °C and °F.
That’s it; your chiller will now show temperatures in the selected unit.
Temperature Set-Point Tolerance
Your chiller uses a temperature differential (menu code F01) to avoid constant fan operation and rapid cycling. The factory default is 2 °C (≈3.6 °F).
- Example: If your target is 37 °F with the 3.6 °F default, the chiller cools to 37 °F, then the fan and compressor stop while the pump keeps running. Cooling resumes only when the water warms to 40.6 °F (target + differential).
- Startup note: If the water is 39 °F and the target is 37 °F, cooling won’t start until it reaches 40.6 °F.
For tighter control, you can lower F01 to 0.2 °C (≈0.4 °F).
A 1 °F differential keeps water between 37 °F and 38 °F.
See sections 2.5 and 3 of the technical manual for adjustment instructions.
Connecting to Wifi
Start by downloading Hulian Smart (iOS & Android compatible).
Hulian Smart
Hulian Smart
Prepare Your Network
- Connect your phone to a 2.4 GHz or 5 GHz Wi-Fi network.
- Tip: 2.4 GHz usually offers better range and stability.
- Using Google Fiber? Follow their instructions to enable a 2.4 GHz network.
Reset Wi-Fi (if needed)
- Check that the Wi-Fi icon on the control panel is flashing.
- If it isn’t: Unlock the control panel.
- Press and hold the left and bottom buttons on the control dial until you hear a beep (~6 seconds).
- Release, then press and hold the same buttons again until the Wi-Fi icon flashes.
Add Chiller to Smart App
- Turn on phone's Bluetooth and enable location access
- Add the chiller to your Smart App by pressing the "+" button or clicking "Add Device"
Frequently Asked Questions
The cooling time depends on several factors: initial water temperature, ambient temperature and humidity, and the amount of water in your tub.
- With a 100-gallon fill and room temperature water (around 70°F), you can expect:
- Initial cooldown to plunge temperature (37°F) in approximately 2.5-3 hours
- Once cold, the system maintains your desired temperature efficiently
- Our commercial-grade 1HP chiller delivers consistent, powerful cooling performance that makes your plunge ready when you need it.
Yes! The chiller is designed and certified for outdoor use as long as ambient temperatures are above freezing.
The chiller carries IPX4 water resistance certification and ETL safety certification, ensuring reliable performance in various weather conditions. You can confidently setup your chiller indoors or outdoors, knowing it meets rigorous safety and durability standards.
Our chiller’s dual sanitation system keeps your plunge water
crystal clear and hygienic.
The system features:
- A strainer for larger debris plus a 5-micron filtration (finer than many competitors' 20-micron filters) to remove particles, skin cells, and debris
- Built-in ozone generator for chemical-free sanitization
- Continuous water circulation for consistent cleanliness
For optimal performance:
- Clean the filter monthly by rinsing with water (a garden hose with a jet stream nozzle works great)
- Swap out filter for new or clean, used filter
- Change water approximately every 3-4 weeks
- Keep the tub covered when not in use
- Clean the tub's inner surface during water changes
For more details, please check The Ultimate Guide for Water Maintenance.
These alarms are safety features to protect your pump - there's no need for concern. The E11 alarm indicates low water flow, typically caused by air in the line or insufficient water flow to the pump. While E12 is temperature-related, it's often triggered by low flow conditions as well.
Check these items if you encounter either alarm:
Strainer Position and Fill
- Must be 100% full of water
- Install at approximately 90° angle with clear housing at bottom
- Incorrect orientation can trigger low flow detection
Filter Housing
- Should be completely full of water (some bubbles during operation are normal)
- If not full, press and hold the red vent button on top until water flows from the vent
Hose Connections
- Connect the chiller water inlet hose to your tub's lower water port
- Verify all connections are secure
Water Level
- Maintain water level above the port that connects to the chiller water inlet
We've got your back, and your plunge! If you encounter any issues, our dedicated in-house team will spring into action faster than you can say 'brain freeze.' We'll do whatever it takes to get you back to your icy zen.