Error Code
medium
Convotherm C4 – Poor Cleaning Results
On your Convotherm 4 C4 floor-standing models unit, poor cleaning results typically…
Convotherm C4 - Error E25.3: Hot Air Cooking Modes Available in Emergency Mode with Increased Water Consumption
Caution / Monitor Closely
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Working with commercial kitchen equipment involves high voltage, gas, and high temperatures.
We strongly recommend contacting a certified service technician for any repairs.
We are not responsible for any damage or injuries resulting from DIY repair attempts.
This information is provided 'as is' without any guarantees of completeness or accuracy.
TLDR
On your Convotherm 4 C4 floor-standing models unit, error E25.3 indicates operation in an emergency mode, limiting the unit to hot air cooking functions up to 284°F. This mode causes increased water consumption due to continuous collector cooling and prevents cleaning cycles. Diagnose the root cause of the emergency mode to restore full functionality and efficiency.
Technical Details
Repair Steps:
- Review System Logs and Other Error Codes: Check the unit’s service menu for any concurrent or preceding error codes. E25.3 is often a consequence of another primary system fault, such as a heating element failure, sensor malfunction, or steam generation issue, that forces the unit into a safe operational mode.
- Inspect Steam Generator/Boiler Components: Given the “increased water consumption due to continuous collector cooling,” investigate the steam generator, its water level sensors (e.g., Level Electrode), heating elements, and water inlet/drain valves. A fault here could lead to improper steam generation or water management.
- Verify Temperature Sensors: Ensure all relevant temperature sensors (e.g., PT1000 sensors in the cooking chamber and steam generator) are functioning correctly and providing accurate readings to the control board. Faulty sensor data can cause the system to default to emergency protocols.
- Check for Water Leaks or Pressure Issues: Examine the entire water supply and drainage system for leaks, blockages, or insufficient water pressure, which can impact cooling and steam generation, leading to abnormal water consumption.
- Examine Control PCB and Connections: Power down and safely inspect the main control PCB for any signs of damage, burnt components, or loose electrical connections. Verify that all wiring harnesses are securely seated.
- Perform a Power Cycle: A complete power cycle (turning off the main power, waiting 30 seconds, and turning it back on) can sometimes reset minor software glitches that might be forcing the unit into emergency mode. Monitor if the E25.3 error persists or if other codes appear.
- Consult Convotherm Service Manual: Refer to the official Convotherm Convotherm 4 C4 service manual for specific diagnostic procedures related to error code E25.3. The manual will provide detailed schematics and testing parameters for components.
Common Questions:
Q: What does Convotherm E25.3 error code specifically indicate?
A: Error E25.3 on your Convotherm 4 C4 floor-standing model indicates that the unit is operating in an emergency mode. In this mode, only hot air cooking functions are available, limited to a maximum of 284°F, and the unit will consume more water due to continuous collector cooling, preventing cleaning cycles.
Q: Why does water consumption increase when E25.3 is active?
A: The increased water consumption is a safety measure in emergency mode, specifically due to continuous collector cooling. This ensures that critical components, likely related to the steam generation system, do not overheat or become damaged while the unit is operating with a detected fault.
Q: Can I continue to use my Convotherm unit with the E25.3 error?
A: Yes, the unit is designed to allow limited operation with E25.3, providing essential hot air cooking modes. However, it will consume more water and cleaning will not be possible. It is strongly recommended to address the underlying fault promptly to restore full functionality, efficiency, and proper hygiene.
When to call a technician
Consider calling a certified technician if:
- The error keeps coming back after you've tried the steps above.
- You're not comfortable doing the checks or repairs yourself.
- You notice unusual noise, smell, or behaviour.
- Equipment is under warranty and you want official service.
- You need the unit back in service quickly with minimal downtime.