⚙️ How the EVO Plus / MiniLed T/H Probe works
The T/H probe is a combined digital sensor that simultaneously measures temperature and relative humidity inside the incubation chamber. It is the component that "sees" environmental conditions and communicates them to the electronic control unit.
It uses a professional precision sensor with self-calibration, capable of detecting minimal variations: accuracy of ±0.1°C for temperature and ±1.5% for relative humidity. This data is processed by the EVO Plus or MiniLed Advanced control unit, which decides when to activate the heating element to heat or the humidifier to increase humidity.
Without a functioning probe, the control unit has no way of knowing what's happening inside the incubator. It's like driving a car with the dashboard off: you don't know how fast you're going or how much gas you have.
📋 Exploded technical reference: this component corresponds to the number 19 in the exploded diagrams of FIEM COSMO incubators. Useful for identification during maintenance.
🔍 When to replace this part
Replace the T/H probe if you notice:
- ✓ Message "ERR" or asterisks (**): the display shows error instead of temperature or humidity values.
- ✓ Wrong readings: the indicated temperature does not correspond to the control thermometer (deviation greater than 1°C).
- ✓ Humidity always at zero or 99%: fixed values that do not change despite real variations.
- ✓ Values that jump: unstable readings that change abruptly for no reason.
- ✓ Resistance always on or always off: the control unit does not receive correct data and does not regulate.
⚠️ Why it happens and what you risk
The T/H probe deteriorates primarily from prolonged exposure to the high humidity typical of incubation. Over time, condensation can infiltrate the sensor, causing oxidation of the contacts or damage to internal components. Repeated temperature changes can also accelerate wear.
A faulty probe is a serious problem: the control unit can't regulate properly, and the incubator operates uncontrollably. The temperature could rise too high (killing the embryos) or fall too low (stopping development). Improper humidity levels cause embryos to fail to break their shells. The control unit is often thought to be the problem, but in 70% of cases, the probe is the culprit.
✅ Compatibility verified
This probe is specific for FIEM incubators with advanced digital control units:
📦 Advanced Mini LED Control Unit
Version with 2.4 inch color LCD control unit and preset programs for species
📦 Central EvoPlus
Version with 3-digit digital display and temperature/humidity control
⚠️ Important note: This probe is NOT compatible with the old Miniled versions with Red Display or the Analog version (which do not have a digital humidity sensor).
🔧 Assembly in 4 simple steps
⏱ Estimated time: 10-15 minutes | 🔧 Tools: Phillips screwdriver (for possible fixing)
- Turn off and unplug the incubator
Unplug the machine from the electrical outlet. Let it cool if it was running. - Photograph the current connection
Before disconnecting the old sensor, take a picture of the connector on the control unit. This will help you reconnect the new one correctly. - Replace the probe
Disconnect the old probe's connector from the control unit (gently pull it out). Remove the probe from its housing. Place the new probe in the same spot and connect the connector. - Final test
Plug the incubator back in and turn it on. Verify that the display shows the correct temperature and humidity (not "ERR"). Compare it to the control thermometer to verify accuracy.
💡 Tip: After replacing the sensors, let the incubator stabilize for 30-60 minutes before checking the accuracy of the readings. New sensors require a short "break-in" period.
🛡️ How to make it last longer
- ✓ Positioning: make sure the probe is not in direct contact with water or condensation drops.
- ✓ Cleaning: Gently wipe the probe with a dry cloth between cycles.
- ✓ Calibration: Periodically check that the readings match the control thermometer. If you notice any discrepancies, use the control unit's calibration function.
- ⚠️ DO NOT do: Do not immerse the probe in water, do not use aggressive detergents, do not pull the cable.
🔗 Spare parts frequently purchased together
🔗 EVO Plus control unit
The electronic brain with a color LCD display. If the probe has been faulty for some time, check the control unit for damage.
FIEM Code: EVO PLUS
🔗 MiniLed Advanced control unit
The 3-digit digital control unit. A more economical alternative to the EVO Plus.
FIEM Code: MINILED ADVANCED
🔗 Control Thermometer
The °F alcohol thermometer for independent analog verification. Useful for comparing probe readings.
FIEM Code: 05/A
📞 Warranty and assistance
✅ 2-year FIEM warranty
Covers manufacturing defects. If there are any problems within 24 months, you'll get a free replacement.
🔄 Returns within 14 days
If for any reason you change your mind (returns cost money, so make an informed purchase), you can return the intact product within 14 days.
📞 Technical support available
Free support via WhatsApp, email, or phone. We can help you determine if the problem is with the probe or the control unit.
🚀 Fast shipping from the FIEM Como warehouse
Ships within 24 hours - Tracked courier with delivery in 2-4 days throughout Italy.
🔒 100% secure payments
Your banking details are managed directly by the bank and encrypted: we never see or store them.
📱 ATTENTION
Please check the model and part number before ordering. If in doubt, send us photos of the old part and the incubator tag on WhatsApp.
📞 Need help?
🛒 Order now or ask for information
📞 WhatsApp: 351 881 9586
📧 E-mail: info@padovanavicoltura.it
📋 Legal Notice and Rights
© 2025 Padovan Avicoltura. All rights reserved.
PLAGIARISM PROHIBITED: Any reproduction of this text or data on other websites, whether in whole or in part, is strictly prohibited and will be prosecuted (DMCA and Law 633/41) without notice.
Italiano 
Deutsch 
Español 
Français 
