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Product Manual, Issue 6
4.6 Refrigeration system failure alarms
Refrigeration system failure (rSF) alarms trigger if the set point (SP) temperature is not reached within the
time defined by the compressor runtime (Ct) parameter.
The limp home aspect of this alarm ensures that the cooler continues to operate with limited disruption to
the end user. The refrigeration system will operate - cooling the products - while a service engineer visit is
scheduled.
The table below describes how the CMS200 controls the cooler during this time and what the end user will
see:
Audible alarm sounds for ten seconds every compressor cycle
(compressor switches ON or OFF) - if the buzzer is enabled.
While the above is displayed, the controller is managing the compressor and the fans:
The compressor cycles fifteen (15) minutes off, then five (5) minutes on.
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The fan switches on with the compressor on cycle, then cycles when the compressor is in the
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off cycle as set by the FCO (fan cycle on) and FCF (fan cycle off) parameters.
The fault clears and normal operation resumes when one of the following occurs:
The appliance sensor temperature reaches SP (set point)
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The power is cycled to the controller - restarting the Ct (refrigeration system failure) timer
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once the compressor switches on.
The Down button is pressed.
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Audio alarm
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Troubleshooting
Need help?
Do you have a question about the Nexo CMS200 and is the answer not in the manual?
Questions and answers
Hello! My fridge doesnt cool but it heats, how can i fix the settings?
To fix the cooling settings on your Elstat Nexo CMS200 fridge that heats instead of cools, follow these steps:
1. Check Temperature Settings: Ensure the temperature settings are correctly configured for cooling and not heating.
2. Verify Appliance Sensor: Confirm that the appliance sensor is reading the correct temperature and is properly connected. The controller should register a PF1 alarm if the sensor is disconnected.
3. Inspect Condenser and Fan: Check for any blockages in the condenser grill, ensure the condenser fan is functioning properly, and look for excessive freeze-up in the evaporator.
4. Adjust HT Parameter: Ensure the High Temperature (HT) parameter setting is appropriate for the ambient conditions.
5. Check for Refrigeration System Leaks: Inspect the system for any leaks that may affect cooling performance.
6. Perform a Half Reset: If required, reset the controller by following the half-reset procedure:
- Press the Set button.
- Enter the button sequence for the main menu.
- Press Set four times.
- Press Down twice.
- Press Up once.
- Press Defrost twice.
- Scroll to the half reset option and select it.
If the issue persists, consult a service technician.
This answer is automatically generated