AQUA AQR-TZA42R(DS) Refrigerator: Cooling & Ice Fixes

The AQUA AQR-TZA42R(DS) is a Japan-market 420 L refrigerator in dark silver, with a 274 L refrigerator section and 146 L of freezer space. AQUA’s product listing and the AQR-TZA42R owner manual identify its temperature controls, automatic ice-maker, door-warning illumination and special food-storage modes. If cooling stops, first read the actual indicator lights and check power, the door seal and temperature setting rather than guessing a digital error number. Stop using the appliance if there is smoke, an overheating plug, damaged wiring or suspected refrigerant damage. The reviewed manual does not confirm an alphanumeric model-specific error-code table.

When the fridge will not cool or feels too warm

1. Check that the power plug is securely connected, the home is not experiencing a power outage and the refrigerator’s LED lights work. Do not open electrical covers.
2. If the panel lamps change by themselves and the cabinet stays warm, review demonstration mode. For this TZA42R model, AQUA says to press Fresh Freezing (旬鮮冷凍) and Advanced Functions (アドバンス機能) together for about six seconds on the internal panel. Recheck the settings afterward. This is a demo-mode procedure, not an error-code reset.
3. If cooling is merely weak, check for the weak temperature setting, hot food, overcrowding, repeated door opening, a blocked cold-air path and poor ventilation around the cabinet.

Ice-maker and warning-light checks

The matching manual recommends checking the water tank level and seating, removable ice-making unit, stopped ice-making setting and food obstructing airflow. The freezer-door underside LED can flash as a door-open warning; that flash alone is not a confirmed diagnostic error code. For this TZA42R version, the manufacturer describes a door-alarm toggle using Refrigerator/Freezer (冷蔵・冷凍) and Cooking Assist (クッキングアシスト) together for approximately six seconds. Keep the alarm enabled for normal use.

Specifications and identification

This model has a 700 mm cabinet width, 1,825 mm height and 635 mm depth; AQUA lists a 420 L rated volume, a 119 kg product weight and a dark-silver (DS) finish. It is a Japanese domestic 100 V, 50/60 Hz appliance. Verify the full AQR-TZA42R(DS) suffix on the unit label before ordering parts or requesting assistance.

Original AQUA documentation

Use the manufacturer’s AQR-TZA42R product details, Japanese owner manual (PDF) and model support page. The manual explains controls on page 21 and symptom checks on pages 22–24. If the same cooling or ice-making issue persists after those user checks, arrange AQUA service; do not try sealed-system or wiring repairs.