Rivacold E2 Error Code
Temperature-probe fault — which probe E2 names depends on the fitted controller (probe 3/condenser-product on Carel easy; probe 2/S2 on other families)
Source: Carel 2/technical_flat/030220791.pdf
What does Rivacold E2 mean?
E2 is a temperature-probe error on the controller fitted to the Rivacold unit — the sensor has failed open, shorted, or is reading out of range. Which probe E2 names depends on the controller: on the Carel easy thermostats it is the THIRD (condenser/product) probe error, while other controller families report E2 as a probe 2 / S2 (typically defrost/evaporator) failure — in that case the controller cannot read coil temperature and defrosts end on time only. Confirm the probe map for the controller actually fitted before swapping parts.
Symptoms
- Display shows E2 (or a flashing probe fault)
- Defrosts run to the time limit instead of terminating on temperature
- Coil icing or short-cycling of defrost; alarm relay/buzzer active
Common causes
- Failed or aged NTC evaporator/defrost probe
- Probe lead damaged, pinched in the coil area, or loose at the terminals
- Water/ice ingress or corrosion in the connector
- Probe reading outside the controller's valid range
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Diagnostic steps
Confirm E2's probe assignment
Check the fitted controller's manual to confirm E2 is the defrost/evaporator probe and locate its terminal.
Inspect the probe in the coil area
Evaporator probes sit in a harsh, wet, cold location — check the lead for ice damage, pinching, and a secure terminal; reseat the connector.
Measure the NTC resistance
Disconnect and measure the probe against the controller's resistance-vs-temperature table; an open or shorted value means replace it.
Replace and re-secure
Fit the correct NTC probe, clip it back to the coil in its specified position, and verify defrost now terminates on temperature.
When to call a professional
If a new probe and wiring do not clear E2 or defrost still misbehaves, have a refrigeration technician verify the defrost parameters and the controller input.
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Other Rivacold Error Codes
High-temperature alarm — cabinet/room temperature above the alarm threshold
Low-temperature alarm — cabinet/room temperature below the alarm threshold
Temperature-probe fault — which probe E1 names depends on the fitted controller (probe 2/defrost on Carel easy; probe 1/S1 on other families)
High discharge-pressure alarm — the controller stops the unit; manual or semi-automatic reset
Low suction/evaporation-pressure alarm — the unit stops when evaporation pressure falls below the threshold
Maximum temperature alarm on Dixell controllers — temperature above the high-alarm threshold (a temperature alarm, not a pressure trip)
Minimum temperature alarm on Dixell controllers — temperature below the low-alarm threshold
High temperature warning on Carel-controlled units — probe reading above the alarm threshold parameter
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