W3230 Panel Type Programmable Temperature Control Switch Relay

W3230 DC12V Digital Temperature Controller – Microcomputer Thermostat Switch with 1m Sensor Cable

Specifications:

• Model: W3230
• Power Supply: DC 12V
• Temperature Control Range: -50°C to 120°C
• Resolution: 0.1°C (-9.9 to 99.9°C), 1°C for other ranges
• Measurement Accuracy: ±0.1°C
• Control Accuracy: ±0.1°C
• Display: Dual LED display – Red for actual temperature, Blue for set temperature
• Sensor Type: NTC 10K waterproof probe, 1m cable length
• Relay Output Capacity: 20A @ 12V DC / 10A @ 220V AC
• Operating Temperature: -10°C to 60°C
• Operating Humidity: 20% to 85% RH
• Dimensions: 79 × 43 × 26 mm
• Panel Cutout Size: 73 × 39 mm
• Weight: Approx. 44g

Functions & Features:

• Selectable Heating or Cooling mode
• Adjustable temperature hysteresis (0.1°C to 15°C)
• Upper and lower temperature limits setting
• Temperature calibration function (-7°C to +7°C)
• Delay start function (0–10 minutes)
• Data storage to retain settings after power loss
• Factory reset option

Programming:

1. Function Overview

• P0 – Select Mode: Refrigeration (C) or Heating (H)
• P1 – Return Difference (Hysteresis) Setting
• P2 – Maximum Temperature Limit
• P3 – Minimum Temperature Limit
• P4 – Temperature Calibration (Correction)
• P5 – Delay Start Time (minutes)
• P7 – Memory Function (Save Settings after Power Loss)

2. Quick Start

1. Set Target Temperature
   • Press SET once → temperature display flashes.
   • Press + / – to adjust target temperature (hold for fast change).
   • Press SET to confirm.
   • The controller will automatically switch the relay ON/OFF according to the set temperature.
2. Power & Output
   • Relay Output: 10A – suitable for high-power loads.
   • Display shows the current ambient temperature during normal operation.

3. Display & Indicators

• Indicator Light
  • Flashing = Delay start is active.
  • Solid ON = Relay is energized (output ON).
• Display Messages
  • LL = Sensor not connected.
  • HH = Temperature out of range – relay forced OFF.
  • – – – = High temperature alarm.

4. Parameter Settings

To adjust parameters P0–P5:

• Long press SET for 5 seconds → P0 appears.
• Press + / – to scroll through parameters.
• Press SET to enter the parameter → adjust with + / –.
• Press SET to confirm.
• Long press SET or wait 10 seconds with no action to save and exit.

P0 – Refrigeration / Heating Mode

• C = Cooling Mode
  • Relay ON when temperature ≥ Set Point.
  • Relay OFF when temperature ≤ Set Point – P1.
• H = Heating Mode
  • Relay ON when temperature ≤ Set Point.
  • Relay OFF when temperature ≥ Set Point + P1.

P1 – Return Difference (Hysteresis)

• Range: 0.1 – 15.0°C
• Prevents frequent switching by setting a gap between ON/OFF temperatures.

Example – Cooling:

• Set Point: 25°C, P1: 2°C
• Relay ON at 25°C, OFF at 23°C → repeats cycle.

Example – Heating:

• Set Point: 25°C, P1: 2°C
• Relay ON at 25°C, OFF at 27°C → repeats cycle.

P2 – Maximum Temperature Limit

• Limits the highest allowed Set Point.
• Range: up to 110°C.

Example:

If P2 = 60°C, you cannot set the target temperature above 60°C.

P3 – Minimum Temperature Limit

• Limits the lowest allowed Set Point.
• Range: down to -50°C.

Example:

If P3 = 2°C, you cannot set the target temperature below 2°C.

P4 – Temperature Calibration

• Correct sensor deviations.
• Range: -7.0°C to +7.0°C.

Example:

Display shows 25.0°C:

• Set P4 = +1.5 → display shows 26.5°C.
• Set P4 = -1.5 → display shows 23.5°C.

P5 – Delay Start (Minutes)

• Range: 0–10 minutes.
• Protects compressor/heater life by delaying restart.

Example – Cooling:

If delay = 5 minutes, after stopping the cooling device, it won’t restart until at least 5 minutes have passed.

P7 – Memory Function

• Set P7 = ON → Retains last settings after power loss.

5. Restore Factory Settings

If settings are incorrect or unstable:

1. Power OFF.
2. Press + and – together.
3. Power ON while holding both buttons.
4. All settings reset to factory defaults.