Brand: Haier
Category: Refrigerators
Document Type: Manual
Language: EN
Manual for DW-40L626
Uploaded: Nov. 21, 2025, 6:33 p.m.
- Preparation: Unpack the appliance, check accessories, and clean it. Allow it to stand for 24 hours before plugging in. Ensure the charge battery switch is on.
- Operation: For ambient temperatures above 28°C, cool down the temperature. Do not operate if the ambient temperature exceeds 32°C to avoid compressor damage.
- Loading: This appliance is for storage, not production. Do not load hot materials. Load materials in regulated volumes and lower temperature gradually.
- Settings: Adjust high and low temperature alarms using 'up' and 'down' keys. The control panel locks automatically after 10 seconds.
- Alarms: The appliance has alarms for condenser status, room temperature, sensor errors, voltage issues, and low battery. Audio alarms can be silenced.
Troubleshooting and error codes
| Symptom | Possible Cause | Solution |
|---|---|---|
| The appliance does not operate. | Incorrect voltage of power supply (Correct voltage is 220V) | Check power supply. |
| Power source not switched on. | Switch on power source. | |
| Thermostat is not correctly set up. | Adjust thermostat. | |
| The appliance is too close to heat source. | Move appliance away from heat source. | |
| The appliance is located too close to the wall. | Ensure proper ventilation. | |
| The condenser is dusty. | Clean the condenser with a brush. | |
| Frost buildup forms on interior walls or around the doorframe. | Large quantity testing samples are loaded in the most recent few hours. | Set thermostat to a higher temperature scale and lower it when the appliance is in normal operational status. |
| Materials in storage contact each other. | Space the materials or wrap them if moisture is contained. | |
| Appliance door is not properly closed. | Ensure door is properly closed. Do not open unless necessary. | |
| Large noise | The appliance is not placed on a flat surface. | Place appliance on a flat surface. |
| The noise is generated by compressor. | Normal for ultra low temperature equipment. | |
| The noise might be generated by the appliance parts due to sudden shrinkage. | Decrease temperature gradually. |