Understanding P1, P2, P3 on Your ChillerUpdated 21 days ago
Your Smart Chiller is designed to maintain your ideal water temperature automatically. It has three key settings—P1, P2, and P3—that control how and when the chiller turns on, protects the compressor from damage, and ensures the displayed temperature is accurate. Here’s a breakdown of what each setting does and how to adjust it.
🔧 P1 – Cooling Buffer Zone
What it does:
P1 controls how much the water temperature needs to rise above your set temperature before the chiller starts cooling again. Think of it as a buffer zone.
Default setting: 2°C
How it works (with example):
Let’s say you’ve set your desired water temperature to 8°C.
The chiller will cool the water down to 8°C, then automatically turn off.
It will stay off as the water naturally warms up.
Once the water reaches 10°C (8°C + 2°C buffer), the chiller will automatically turn back on to cool the water back down to 8°C.
This cycle will repeat 24/7 to maintain your set temperature—unless you manually turn the chiller off or set a schedule using the app.
Why it matters:
This buffer prevents the compressor from constantly turning on and off, which helps extend its lifespan. If you set P1 too low (e.g. 0.1°C), the chiller will try to maintain a very tight range and could end up switching on and off too frequently.
Recommended setting: 1–3°C is ideal for most use cases.
⏱️ P2 – Compressor Start Delay
What it does:
P2 sets a delay time before the compressor starts working once cooling is needed.
Default setting: 3 minutes
How it works:
When the chiller is on and is required to cool, it doesn’t start immediately. Instead, it waits for the delay time you’ve set (e.g. 3 minutes) before activating the compressor.
Why it matters:
This delay protects the compressor. Rapid on-off cycling without a break can damage internal parts over time. The delay gives the system time to stabilise between cycles, especially during short bursts of temperature change.
Recommended setting: Keep at 3 minutes to protect the system unless advised otherwise.
🌡️ P3 – Temperature Display Calibration
What it does:
P3 allows you to correct the chiller’s displayed temperature if it differs from an external thermometer or sensor.
Default setting: 0°C (no adjustment)
How it works (with example):
If the chiller’s screen shows 7°C, but your external thermometer reads 8°C, it means the chiller is reading 1°C lower than it should. You can set P3 to -1°C to bring the display in line with your external reading.
Why it matters:
This setting is useful if you want precise control and consistency across your thermometers, especially for performance or health-related uses where temperature accuracy is important.
Tip: Use a reliable external thermometer to check your calibration.
✅ Quick Summary Table
| Setting | What It Does | Default | Key Info |
|---|---|---|---|
| P1 | Sets the buffer zone before cooling restarts | 2°C | Controls how far water warms before cooling kicks in |
| P2 | Adds a delay before compressor starts | 3 mins | Helps prevent system wear and tear |
| P3 | Adjusts the temperature display | 0°C | Matches display with external thermometer |
Still have questions or need help adjusting your settings?
Contact our friendly support team – we’re always happy to help!