OJOPOV AHC30A Series Digital Programmable Timer Switch User Manual (1NO 12V AC/DC 30A)

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your OJOPOV AHC30A Series Digital Programmable Timer Switch. Please read this manual thoroughly before using the device to ensure proper function and safety. This timer switch is designed for precise control of electrical circuits based on a programmable weekly schedule.

2. Safety Information

Always observe the following safety precautions to prevent injury or damage to the device:

Installation and wiring should only be performed by qualified personnel.
Ensure the power supply is disconnected before performing any installation, wiring, or maintenance.
Do not exceed the specified voltage and current ratings of the device.
Keep the device away from water, moisture, and extreme temperatures.
Do not attempt to open or repair the device yourself. Contact qualified service personnel.

3. Product Overview

The OJOPOV AHC30A is a digital programmable timer switch designed for weekly scheduling. It features a clear LCD display, easy-to-use programming buttons, and a robust design for reliable operation.

3.1 Key Features

Weekly programmable with up to 18 ON/OFF settings per day.
Digital display for clear time and program status.
Built-in battery for memory backup during power outages.
Manual override function.
DIN rail mounting for easy installation.

3.2 Components

The timer switch consists of a main body with an LCD display, control buttons, and terminal blocks for electrical connections.

Figure 1: Front and side view of the OJOPOV AHC30A Digital Programmable Timer Switch. This image shows the device's compact design, the transparent cover protecting the display and buttons, and the terminal connections on the side.

Multiple views of the OJOPOV AHC30A Timer Switch — Figure 2: Various angles of the OJOPOV AHC30A Timer Switch. This collage displays the top, side, and bottom views, highlighting the DIN rail mounting mechanism and the input/output terminals.

4. Specifications

Refer to the table below for detailed technical specifications of the timer switch:

Parameter	Value
Model Number	AHC30A (THC30A)
Voltage Rating	12V AC/DC (for this variant)
Voltage Limit	AC/DC 10.8V ~ 13.2V (approx. for 12V model)
Contact Load	30A
ON/OFF Operation	18 ON & 18 OFF settings
Minimum Interval	1 minute
Power Consumption	7.5VA (max)
Hysteresis	≤2 sec/day (at 25°C)
Countdown Function	1 sec - 99 min 59 sec
Pulse Function	1 sec - 59 min 59 sec
Dimensions (approx.)	82mm (H) x 36mm (W) x 65mm (D)
Mounting	DIN Rail
Certification	CE

Product dimensions and technical parameters — Figure 3: Detailed product dimensions and key technical parameters. This image provides visual measurements and lists specifications such as voltage rating, minimum interval, and power consumption.

5. Installation

The timer switch is designed for DIN rail mounting. Ensure the power supply is off before proceeding with installation.

5.1 DIN Rail Mounting

Align the timer switch with a standard DIN rail and press firmly until it clicks into place. Ensure it is securely fastened.

Timer switches mounted on a DIN rail — Figure 4: Two OJOPOV timer switches installed on a DIN rail. This demonstrates the standard mounting method for these devices in an electrical panel.

5.2 Wiring Diagrams

Connect the timer switch to the power supply and the load according to the appropriate wiring diagram. This specific model is a 1NO (Normally Open) type. For 1NO1NC (Normally Open/Normally Closed) models, refer to the alternative diagram.

Wiring diagram for 1NO 12V AC DC timer switch — Figure 5: Wiring diagram for the 1NO 12V AC/DC timer switch. This diagram illustrates how to connect the input (N and L) and the output (terminals 3 and 4) to a load, such as a light bulb.

Wiring diagram for 1NO1NC timer switch — Figure 6: Wiring diagram for a 1NO1NC timer switch. While your specific model is 1NO, this diagram is provided for reference if you have a 1NO1NC variant, showing connections for both normally open and normally closed contacts.

Comparison of 1NO1NC and 1NO timer switch models — Figure 7: Comparison illustrating the difference between 1NO1NC and 1NO models, and their respective input voltage markings. This helps in identifying the correct model and its input specifications.

6. Operating Instructions

6.1 Initial Setup

First Use: Upon first use, press the RESET key to clear any previous settings and initialize the device.
Time Format: The timer switch defaults to 24-hour mode. To switch to 12-hour mode, press the CLOCK key for 5 seconds. The LCD will display AM/PM. To return to 24-hour mode, press the CLOCK key for another 5 seconds.
Setting Current Time: Press the CLOCK key, then use D+ (Day), H+ (Hour), and M+ (Minute) keys to set the current day and time. Release the CLOCK key to save.

6.2 Programming ON/OFF Times

The timer allows for up to 18 ON/OFF programs. Follow these steps to set your desired schedule:

Key	Action
Press P	Setting 1 ON time (display shows '1 ON')
Press H+/M+	Set hours and minutes for the ON time
Press D+	Select days of the week (e.g., MO-FR, MO-SA, SA SU, MO-WE, TH-SA, MO WE FR, TU TH SA, different everyday). If the setting is for everyday, do not press this key.
Press P	Setting 1 OFF time (display shows '1 OFF')
Press H+/M+	Set hours and minutes for the OFF time
Press D+	If you want the same day setting as the ON time, you do not need to press this key.
Repeat steps 2-6	Set programs 2-18 for ON/OFF times
Press CLOCK	End programming and return to current time display.

Note: If you need to set all 18 programs, repeat the steps accordingly. To review or modify programs, press the P key repeatedly to cycle through the settings.

6.3 Manual Override

Press the MANUAL key to cycle through different operating modes: ON, AUTO, OFF. In AUTO mode, the timer operates according to the programmed schedule. In ON or OFF mode, the output remains continuously ON or OFF, overriding the schedule.

Operating instructions and programming guide — Figure 8: Detailed operating instructions, including key functions and a step-by-step guide for programming ON/OFF times. This image is essential for understanding how to set up the timer's schedule.

7. Maintenance

The OJOPOV AHC30A timer switch requires minimal maintenance.

Cleaning: Disconnect power before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use abrasive cleaners or solvents.
Storage: If storing the device for an extended period, ensure it is kept in a dry, cool environment, away from direct sunlight.
Battery: The internal battery maintains program settings during power outages. If the display is blank or settings are lost frequently, the internal battery may need replacement by a qualified technician.

8. Troubleshooting

If you encounter issues with your timer switch, refer to the following common problems and solutions:

Device not powering on:
- Check the power supply connections.
- Ensure the input voltage matches the device's rating (12V AC/DC for this model).
Load not turning ON/OFF as programmed:
- Verify that the current time and day are set correctly.
- Check the programmed ON/OFF times for accuracy.
- Ensure the timer is in 'AUTO' mode (not manual ON/OFF).
- Confirm the load wiring is correct and the load itself is functional.
Settings are lost after power outage:
- The internal battery may be depleted. Allow the device to be powered for several hours to recharge the battery. If the issue persists, the battery may need replacement.
Display is blank or erratic:
- Press the RESET button.
- Check power connections.

If the problem persists after attempting these solutions, please contact customer support.

9. Warranty and Support

For warranty information or technical support, please refer to the product packaging or contact your retailer. Keep your purchase receipt as proof of purchase.

OJOPOV AHC30A (1NO 12V AC/DC 30A)