Continental Refrigerator Error Code Pr3: Ambient Probe Error
Pr3 on a Continental refrigerator or freezer with the Evco-type control is an Ambient Probe Error. The manual identifies probe Pb3, the condenser inlet air probe, as defective, with automatic reset. The unit usually keeps cooling, but the probe should be checked.
Low: the ambient probe is less critical to cabinet control, and the unit is expected to keep cooling.
- Code
- Pr3
- Maker
- Continental
- Equipment
- Reach-in refrigerators
- Applies to
- Continental refrigerators and freezers with the Evco-type electronic control (probes Pb1-Pb3)
What does Continental error code Pr3 mean?
Pr3 is listed as the Ambient Probe Error in the alarm table for the Evco-type electronic control on Continental refrigerators and freezers. Probe Pb3 measures ambient air at the condenser inlet. The control uses it, when it is fitted, for functions that depend on room or condenser air temperature. When it cannot read Pb3 it shows Pr3. The manual's table lists the code, a short description and the reset type, which is automatic, and it gives no causes or steps. Compared with Pr1 and Pr2, the ambient probe has less to do with keeping the cabinet at setpoint, so a Pr3 alone is generally less urgent. The manual does not state what the control does without it, though, so the cabinet temperature should still be watched.
Affected models and control systems
Pr3 is listed for Continental refrigerators and freezers with the Evco-type electronic control and probes Pb1 to Pb3, in the Alarm Codes and Reset Types table printed on page 2 of the operations manual. Pb3 is the ambient probe at the condenser inlet.
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
- Pr3 on the control display
- Cabinet temperature otherwise normal
- No other alarm shown
Possible causes
Likely causes — what usually sits behind error code Pr3 on this control. A technician confirms which one it is before any part is replaced.
- Pb3 probe connector loose near the condenser
- Probe cable damaged by heat or cleaning near the condenser
- Probe element failed after exposure to grease or heat
Safe checks before calling for service
- Check the cabinet temperature to confirm cooling is normal.
- Check that the condenser area is clear of boxes and dust.
- Do not unplug the probe or open the control.
- Note whether other probe codes also appear.
- Tell the technician that Pr3 is shown, along with the cabinet temperature.
How a technician diagnoses error code Pr3
- Read the code and confirm Pb3 is the probe named.
- Inspect the probe near the condenser inlet and its cable.
- Measure the probe resistance against its chart at room temperature.
- Check the connector at the control.
- Replace the probe if it fails.
- Confirm the alarm resets automatically.
- The condenser area carries fan motors and wiring at line voltage.
- Interpreting probe values needs the control's parameter list.
- Replacement should be done with the unit isolated.
How error code Pr3 differs from similar codes
Pr3 is the ambient probe, the least critical of the three probe codes on this control, compared with Pr1 for regulation and Pr2 for the evaporator.
Technical reference
- Document
- Operations Manual - Electronic Control for Refrigerators and Freezers (Continental easy control)
- Edition
- REV. 07/22/2025
- Models / control
- Continental refrigerators and freezers with the Evco-type electronic control (probes Pb1-Pb3)
- Section
- Alarm Codes and Reset Types, printed p. 2; Loc/UnL appear only in How to Unlock the Keypad, p. 1
- 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 Continental reach-in refrigerator error codes
Can I keep using the unit with Pr3?
Usually yes if the cabinet temperature is normal, but have the probe checked.
Will Pr3 reset itself?
The manual says the reset is automatic.
What is the difference between Pr3 and Pr1?
Pr3 is the ambient probe. Pr1 is the main regulation probe.
Need help with Continental error code Pr3?
A technician confirms the cause on site and gives you the price in writing before any work starts.