Troubleshooting and Repair | Economy Laboratory Freezers

Dixell Alarm Codes

This table lists the On-Screen Alarms for the Dixell XR70 Controller, their causes, and suggested actions:

• P1: Probe 1 Failure – Call Service.
• P2: Probe 2 Failure – Call Service.
• HA: High Alarm (Product Temperature) – The probe in the bottle is above the alarm point.
• HA2: Possible Probe Fault – Call Service.
• LA: Low Alarm (Product Temperature) – The probe in the bottle is below the alarm point.
• LA2: Low Temperature Entering the Cabinet – Possible air blockage in the cabinet.
• DA: Door Open Alarm – Ensure the door is closed securely.
• PoF: UP & DOWN Buttons Pressed Simultaneously – Press both buttons until “PoN” appears.

Problem: Temperature of the freezer is running hotter than expected. 

Causes:

• The condenser may be dirty or blocked.
• Recently added items may be affecting the internal temperature.

Fix:

• Clean condenser as described within manual. 
• If new samples have been added, allow about an hour to see if the temperature stabilises and comes down.

Problem: PoF is shown on the Dixell Controller.  

Cause:

• The message "PoF" indicates that the controller is locked.

Fix:

• Press the UP and DOWN buttons simultaneously until PoN appears.

Problem: The buttons on the controller are damaged, and the controller does not respond, even though the display is working.

Cause: 

• Faceplate is damaged.

Fix:

• Replace the faceplate.

📞 Contacting Thermoline for Product Information and Support

When reaching out to Thermoline for product information, please have the Serial Number and any other relevant details on hand. The serial number can be found on a white sticker, typically located near the power IEC socket.

For assistance, contact Thermoline Service:

• Phone: +61 2 9604 3911
• Email: service@thermoline.com.au

Having this information ready helps us provide efficient and accurate support.