Q: What does the error code L2 mean on my Accucold ARS18PVDL2B refrigerator and how can I fix it?

L2 means "Low product temperature alarm" . This code appears when the temperature detected by the product sensor is less than or equal to the configured alarm value. Solutions to fix the L2 error: Increase the set point - If the temperature is set too low, gradually raise it and wait 30 minutes to see if the alarm goes away. Check the product sensor - Ensure that the sensor installed in the glycol bottle is functioning properly and is not damaged. Check air circulation - Clean the ventilation grilles and ensure that nothing is blocking the airflow around the stored products. Adjust the C3L alarm setting - This setting defines the low product alarm threshold. You can adjust it as needed via the configuration menu. If the error persists after these checks, contact Accucold technical support at 1-888-4-MEDLAB .

Q: Why is the H2 alarm sounding on my Accucold ARG18PV-CRT refrigerator?

H2 is a high product temperature alarm on your Accucold ARG18PV-CRT. It activates when the internal temperature exceeds the threshold set in parameter C3H (default 8.0°C). When the H2 alarm sounds: The front panel display flashes H2 alternately with the current temperature The compressor automatically activates to cool the unit The alarm stops as soon as the temperature drops below the threshold (minus the hysteresis C4 of 0.1°C by default) Possible causes: Door left open or defective seal Ambient temperature too high C3H threshold set too low (default 8°C) - the unit operates normally between 2°C and 10°C Blocked air circulation around the unit Defective product sensor (codes 2H or 2L on the display) Solutions: Check that the door closes properly and that the seal is not damaged Wait for the temperature to drop - the alarm will turn off automatically If the alarm persists, you can adjust the C3H threshold by pressing SET for 6 seconds (default password: 15), range: -19.9°C to 20°C Ensure that the unit is clear and well-ventilated If the display shows 2H or 2L instead of H2, the product sensor is defective and needs to be replaced.

Question 1

What does the error code L2 mean on my Accucold ARS18PVDL2B refrigerator and how can I fix it?

Accepted Answer

L2 means "Low product temperature alarm". This code appears when the temperature detected by the product sensor is less than or equal to the configured alarm value.

Solutions to fix the L2 error:

Increase the set point - If the temperature is set too low, gradually raise it and wait 30 minutes to see if the alarm goes away.
Check the product sensor - Ensure that the sensor installed in the glycol bottle is functioning properly and is not damaged.
Check air circulation - Clean the ventilation grilles and ensure that nothing is blocking the airflow around the stored products.
Adjust the C3L alarm setting - This setting defines the low product alarm threshold. You can adjust it as needed via the configuration menu.

If the error persists after these checks, contact Accucold technical support at 1-888-4-MEDLAB.

Question 2

Why is the H2 alarm sounding on my Accucold ARG18PV-CRT refrigerator?

Accepted Answer

H2 is a high product temperature alarm on your Accucold ARG18PV-CRT. It activates when the internal temperature exceeds the threshold set in parameter C3H (default 8.0°C).

When the H2 alarm sounds:

The front panel display flashes H2 alternately with the current temperature
The compressor automatically activates to cool the unit
The alarm stops as soon as the temperature drops below the threshold (minus the hysteresis C4 of 0.1°C by default)

Possible causes:

Door left open or defective seal
Ambient temperature too high
C3H threshold set too low (default 8°C) - the unit operates normally between 2°C and 10°C
Blocked air circulation around the unit
Defective product sensor (codes 2H or 2L on the display)

Solutions:

Check that the door closes properly and that the seal is not damaged
Wait for the temperature to drop - the alarm will turn off automatically
If the alarm persists, you can adjust the C3H threshold by pressing SET for 6 seconds (default password: 15), range: -19.9°C to 20°C
Ensure that the unit is clear and well-ventilated

If the display shows 2H or 2L instead of H2, the product sensor is defective and needs to be replaced.

Question 3

What is the difference between the low temperature alarm of the product and the low temperature air alarm on the refrigerator ARG12PV456?

Accepted Answer

The Accucold refrigerator ARG12PV456 has two independent temperature sensors with their own alarms:

Low Air Temperature Alarm (LO)

Setting: C2 (default adjustable to 1.0°C)
Display: "LO delay alarm" on the screen
Adjustment Range: -19.9°C to the value of C1
Function: Monitors the air temperature inside the refrigerator compartment. Triggers an alarm when this temperature falls below the C2 threshold for a duration longer than the alarm delay (parameter C6)

Low Product Temperature Alarm (L2)

Setting: C3L (default adjustable to 2.0°C)
Display: "L2 delay alarm" on the screen
Adjustment Range: -19.9°C to 20.0°C
Function: Monitors the temperature of a thermal glycol bottle placed inside the refrigerator. Triggers an alarm when this product temperature falls below the C3L threshold after the defined delay (C6)

Key Difference

The air alarm measures the general conditions of the compartment, while the product alarm uses a thermal mass glycol sensor that reacts more slowly to temperature changes and more accurately reflects the actual conditions of the stored products. In other words, the air may be cold but the glycol (and your products) may take time to cool down - this is what the second alarm measures.

Find all detailed alarm parameters on page 30 of the manual.

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