User Manual for AKO 16624 Temperature and Moisture Controller

Quick guide from the manual

The AKO 16624 is a temperature and moisture controller designed for cold rooms. Upon first power-up, the unit enters the ASSISTANT mode to guide you through the initial setup. The lower display will show the message In1 flashing with 0. Follow the on-screen steps to configure the cold regulation type, moisture regulation type, and set points for temperature and moisture.

Installation and wiring

Safety Warnings:

• Always disconnect the power supply before performing any wiring.
• Use only NTC probes supplied by AKO.
• Install in a location protected from vibrations, water, and corrosive gases.
• The IP65 protection degree is only valid with the protection cover closed and when cables enter through a tube with IP65 glands or higher.
• Do not spray the unit directly with high-pressure hoses.

Wiring Requirements:

• Probes and their cables must NEVER be installed in a conduit together with power, control, or power supply cables.
• The power supply circuit must be equipped with at least a 2 A, 230 V switch located near the device.
• Power supply cable: H05VV-F or NYM 1x16/3 (minimum 2.5 mm²).
• Relay output cables: Minimum 2.5 mm², must withstand temperatures of 70 ºC or higher.

Operation and keypad

The keypad allows for direct control and access to programming menus:

• Stand-By (ESC key): Press for 3 seconds to activate/deactivate.
• Defrost: Press the up arrow key for 3 seconds to start/stop.
• Light: Press the SET key once to toggle the cold room light.
• Set Points: Press the SP key once to view current set points, or hold for 3 seconds to adjust them.
• Alarms: Press the SP key once to mute an active acoustic alarm.

Initial configuration

The configuration wizard (In1/In2) is essential for setting up the controller based on your specific installation. If you need to re-run the wizard, activate Stand-By mode, wait for the regulation to stop completely (indicator light on), and press the following keys in order: Up, Down, SET.

Programming menus

The controller features two programming levels:

• Condensed menu: Press SET for 3 seconds to access frequently used parameters (SPt, C1, SPH, rH01, d0, d1, d4, F3, A1, A2, A21, A22).
• Extended menu: Press SET for 6 seconds to access all parameters.

Note: If a password is set (b10=1 or 2), you must enter the code programmed in PAS to access these menus.

Maintenance

Clean the surface of the unit with a soft cloth, water, and soap. Do not use abrasive detergents, petrol, alcohol, or solvents, as these may damage the unit.

Troubleshooting

The unit displays specific messages for errors or alarms:

• E1/E2/E3: Probe failure (open/crossed circuit or out of limits).
• Ad0: Open door alarm (door open longer than defined in A12).
• AH/AL: Maximum/Minimum temperature alarm.
• KCP: HACCP alarm (temperature reached h1 for longer than h2).
• HCP + PF: HACCP alarm due to power supply failure.

Technical specifications

• Power supply: 100 - 240 V~, 50/60 Hz.
• Probe range: -50.0 ºC to 99.9 ºC.
• Protection: IP65.
• Relay operations: 100,000 operations.