Kolpak Walk-In Cooler Error Code LOW MONITOR TEMP3 ALARM: Temp 3 Below Offset
LOW MONITOR TEMP3 ALARM means Temp 3 is below the Low Temp Alarm Offset for longer than the Low Temp Alarm Delay. The third monitored spot is colder than its low limit. Scroll the Alarms & Variables menu to confirm and check that area with a thermometer.
Medium: a monitored area is below its low alarm point, which can freeze product.
- Code
- LOW MONITOR TEMP3 ALARM
- Maker
- Kolpak
- Equipment
- Walk-in coolers & freezers
- Applies to
- ArcticFox Deluxe Display, stand-alone
What does Kolpak LOW MONITOR TEMP3 ALARM mean?
For Temp 3 the stand-alone Display has a low limit set by the Low Temp Alarm Offset. Reading under that limit starts a timer, the Low Temp Alarm Delay. If the reading is still low when it ends, the text alarm LOW MONITOR TEMP3 ALARM appears in the Alarms & Variables menu. Dips shorter than the delay are ignored. As with the other monitor alarms, this one needs a valid reading, so the sensor circuit is healthy and the temperature itself is the issue. The manual gives no causes and does not name what Temp 3 monitors. A cold spot can freeze produce or drinks, though in a freezer the limit may be set so low that the alarm points to a real problem. The manual mentions the DISP CLEAR ALARM variable for clearing alarms set in the Display.
Affected models and control systems
ArcticFox Deluxe Display, stand-alone, on Kolpak walk-ins. The manual lists this alarm in the Alarms & Variables menu on page 9 of the stand-alone section.
Code numbers and their meaning can change between control generations. We match the full model and control before acting on a code.
What you may notice
- LOW MONITOR TEMP3 ALARM in the Alarms & Variables menu
- Alarm indication on the Display
- Temp 3 reading under its low limit
- Ice or frozen product at the sensor
Possible causes
Likely causes — what usually sits behind LOW MONITOR TEMP3 ALARM on this control. A technician confirms which one it is before any part is replaced.
- Sensor sitting in the cold air stream from the evaporator
- Whole room colder than its setpoint
- Low Temp Alarm Offset set close to the normal temperature
- Cold product touching the probe
Safe checks before calling for service
- Scroll the Alarms & Variables menu to confirm the alarm and note Temp 3.
- Measure the area with a thermometer and move product that could freeze.
- Keep airflow clear and see that cold air is not blowing straight at the sensor.
- Report the readings and time to the technician.
How a technician diagnoses LOW MONITOR TEMP3 ALARM
- Read the Low Temp Alarm Offset and Low Temp Alarm Delay.
- Compare Temp 3 with a thermometer.
- Check room setpoint and evaporator airflow.
- Review sensor placement.
- Correct the cause, clear the alarm and observe.
- Cooling adjustments can involve live fans and refrigerant circuits.
- Offset and delay values are programming tied to the room design.
- Sensor tests put a meter on live inputs.
Technical reference
- Document
- ArcticFox Deluxe Display - Original Instructions, Installation, Operation and Maintenance Manual
- Edition
- Part No. 500002385-4, 5/23
- Models / control
- ArcticFox Deluxe Display, stand-alone
- Section
- Deluxe Display - Stand Alone - Alarms & Variables Menu, p.9
- Checked
- October 2026
We use the maker's document to read the code and do not reproduce it. Always confirm the complete model and control before applying these steps.
Related Kolpak walk-in cooler & freezer error codes
Is this alarm the opposite of HIGH MONITOR TEMP3 ALARM?
Yes. One watches for a reading above its offset. This one watches for a reading below its offset.
Do I need to act at once?
Check the area temperature and move anything that could freeze. The manual states no other urgent action.
Will clearing the alarm stop it?
Only if the area has warmed back above the limit. Otherwise it returns.
Need help with Kolpak LOW MONITOR TEMP3 ALARM?
A technician confirms the cause on site and gives you the price in writing before any work starts.