1. Inleiding
This manual provides detailed instructions for the installation, programming, and operation of your johgee HCT-379 4-Output Digital Irrigation Computer. This device is designed to automate watering for various applications, including gardens, lawns, and greenhouses, offering flexible and independent control over four separate watering zones.

Image: The johgee HCT-379 irrigation computer highlighting its key features.
2. Veiligheidsinligting
- Ensure the device is installed securely to prevent accidental detachment.
- Do not submerge the device in water. While it is IPX5 waterproof, prolonged submersion can cause damage.
- Gebruik slegs 1.5V AA alkaliese batterye. Moenie ou en nuwe batterye of verskillende batterytipes meng nie.
- Keep the device out of reach of children and pets to prevent unintended operation.
- Disconnect the device from the faucet and store it indoors during freezing temperatures to prevent damage.
3. Pakketinhoud
Verifieer dat alle items in die pakket teenwoordig is:
- johgee HCT-379 4-Output Digital Irrigation Computer
- Gebruikershandleiding
- Standard faucet connector (typically 3/4 inch)
- Additional adapters/seals (if included)
4. Produk verbyview
The johgee HCT-379 features a large LCD display and intuitive controls for easy programming. It includes four independently controlled outlets for versatile watering.

Beeld: Voorkant view of the irrigation computer with display labels.
Sleutelkomponente:
- LCD-skerm: Toon huidige tyd, programinstellings en status.
- Beheerknoppies: For navigation, setting values, and mode selection (NOW, ABCD, ESC/OFF, OK, +, -, DELAY).
- Faucet Connector: Top inlet for connecting to a standard outdoor faucet.
- Four Independent Outlets (A, B, C, D): Bottom outlets for connecting hoses to different watering zones.
- Battery kompartement: Located at the back, secured with a sealed cover.
5. Opstelling
5.1. Battery Installasie
- Vind die batterykompartement aan die agterkant van die toestel.
- Open the sealed battery cover.
- Plaas twee (2) nuwe 1.5V AA alkaliese batterye in en maak seker dat die polariteit (+/-) korrek is.
- Securely close the battery cover to maintain the IPX5 waterproof rating.

Image: Steps for battery insertion and device installation.
5.2. Connecting to the Faucet
- Maak seker dat jou buitekraan toegedraai is.
- Thread the top connector of the irrigation computer onto your faucet. Hand-tighten until secure. Do not overtighten.
- Turn on your faucet fully to ensure adequate water pressure to the timer.
5.3. Connecting Hoses to Outlets
- Attach your garden hoses or irrigation lines to the four independent outlets (A, B, C, D) at the bottom of the device.
- Maak seker dat alle verbindings styf is om lekkasies te voorkom.
6. Bedryfsinstruksies
6.1. Verstaan die skerm
The LCD display provides all necessary information for programming and monitoring. Familiarize yourself with the indicators:
- NOU: Huidige tyd.
- ABCD: Indicates which output zone(s) are currently selected or being programmed.
- BEGIN TYD: The programmed time for watering to begin.
- HOE LANK: The duration of watering for a selected zone (1 second to 360 minutes).
- HOE GEREELD: The frequency of watering (1 hour to 23 hours, or 1 day to 15 days).
- NEXT START: Time remaining until the next scheduled watering cycle.
- Battery aanwyser: Toon oorblywende batterylewe.
- Kinderslot-ikoon: Indicates if the child lock is active.
- Rain Delay Icon: Indicates if rain delay is active.
6.2. Stel huidige tyd
- Druk die NOU button. The current time will flash.
- Gebruik die + en - knoppies om die uur aan te pas.
- Druk OK to confirm the hour and move to minutes.
- Gebruik die + en - knoppies om die minute aan te pas.
- Druk OK to save the current time.
6.3. Programming Watering Schedules (Zones A, B, C, D)
Each of the four outlets can be programmed independently.
- Druk die ABCD button to select the zone you wish to program (A, B, C, or D). The selected zone will flash.
- Druk OK to enter programming mode for that zone.
- Stel begintyd: The 'START TIME' will flash. Use + en - om die uur aan te pas, dan OK to confirm and move to minutes. Adjust minutes and press OK.
- Set Watering Duration ('HOW LONG'): The 'HOW LONG' value will flash. Use + en - to set the watering duration from 1 second to 360 minutes. Press OK.
- Set Watering Frequency ('HOW OFTEN'): The 'HOW OFTEN' value will flash. Use + en - to set the frequency from 1 hour to 23 hours, or 1 day to 15 days. Press OK to save the program for the selected zone.
- Repeat steps 1-5 for each zone (A, B, C, D) you wish to program.

Image: Programming options for watering duration and frequency across multiple zones.
6.4. Handmatige Besproeiingsmodus
This mode allows immediate watering without affecting your programmed schedules.
- Druk die water faucet icon button (usually labeled with a faucet symbol).
- Gebruik die ABCD button to select the desired output zone(s) for manual watering.
- Gebruik die + en - buttons to set the manual watering duration.
- Druk OK to start manual watering. The selected zone(s) will begin watering for the set duration.
- To stop manual watering prematurely, press the water faucet icon button weer of ESC/OFF.

Image: Activating manual watering mode.
6.5. Reënvertragingsmodus
The device does not have an automatic rain sensor. Rain delay must be activated manually to pause scheduled watering during rainfall.
- Druk en hou die VERTRAGING knoppie vir 3 sekondes.
- Gebruik die + en - buttons to select the desired delay duration (e.g., 24 hours, 48 hours, 72 hours).
- Druk OK to confirm. The rain delay icon will appear on the display, and all programmed watering cycles will be paused for the selected duration.
- To cancel rain delay, press and hold the VERTRAGING button again for 3 seconds, then set the delay to '0' or press ESC/OFF.

Image: Rain delay mode activated on the irrigation computer.
6.6. Kinderslotfunksie
To prevent accidental changes to your settings, activate the child lock.
- Druk en hou die lock icon button for 3 seconds. The lock icon will appear on the display.
- Om te ontsluit, druk en hou die lock icon button again for 3 seconds. The lock icon will disappear.
6.7. Manual Valve Operation (Video Demonstration)
This video demonstrates how to manually open and close the valves on the irrigation computer.
Video: Demonstration of manually opening and closing the valves on the johgee HCT-379 irrigation computer. This shows how to test water flow through each output.
7. Onderhoud
7.1. Skoonmaak
- Vee die buitekant van die toestel af met 'n sagte, damp lap. Moenie skuur skoonmaakmiddels of oplosmiddels gebruik nie.
- Periodically check the filter screen in the faucet connector for debris and clean if necessary to maintain optimal water flow.
7.2. Winterberging
- Before the first frost, disconnect the irrigation computer from the faucet and hoses.
- Remove the batteries to prevent corrosion.
- Store the device in a dry, frost-free location indoors.
8. Probleemoplossing
| Probleem | Moontlike oorsaak | Oplossing |
|---|---|---|
| Geen watervloei nie | Faucet is off; low water pressure; clogged filter; dead batteries. | Ensure faucet is fully open; check water supply; clean filter; replace batteries. |
| Toestel skakel nie aan nie | Dooie of verkeerd geïnstalleerde batterye. | Vervang batterye en maak seker dat die polariteit korrek is. |
| Lekkasies van verbindings | Loose connections; worn out washers/seals. | Tighten all connections; replace rubber washers if damaged. |
| Programs not running | Incorrect programming; rain delay active; child lock active. | Review programming steps; deactivate rain delay; deactivate child lock. |
| Vertoning is dof of leeg | Lae batterykrag. | Vervang batterye. |
9. Spesifikasies
- Model: HCT-379
- Handelsmerk: johgee
- Aantal Uitsette: 4 (independently controlled)
- Gietertyd: 1 sekonde tot 360 minute
- Gieterfrekwensie: 1 hour to 15 days
- Kragbron: 2 x 1.5V AA alkaliese batterye (nie ingesluit nie)
- Waterdigte gradering: IPX5
- Materiaal: Reinforced Nylon Fiber
- Produk afmetings: 14.2 x 16.4 x 7.4 cm
- Gewig: 890 gram
10. Waarborg en Ondersteuning
For warranty information or technical support, please refer to the contact details provided with your purchase or visit the official johgee webwebwerf. Bewaar u aankoopbewys as bewys van aankoop.