Error Code
medium
Convotherm C4 – Poor Cleaning Results
On your Convotherm 4 C4 floor-standing models unit, poor cleaning results typically…
Convotherm C4 - Error E59.0: Rinse Aid Dispensing Pump Fault
Caution / Monitor Closely
Warning: The information provided here is for educational purposes only.
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 E59.0 indicates a rinse aid dispensing pump fault, usually due to an empty canister or air in the lines. First, ensure the rinse aid container is full and positioned correctly. Restart the unit multiple times to prime the pump and clear any trapped air from the dispensing lines.
Technical Details
Repair Steps:
- Verify Rinse Aid Level: The most common cause for E59.0 is an empty rinse aid canister. Locate the rinse aid container, typically stored in a compartment below or beside the cooking chamber, and visually inspect its level.
- Refill Rinse Aid Canister: If the canister is low or empty, refill it completely with the manufacturer-recommended rinse aid. Ensure the suction tube is fully submerged in the liquid and that the canister is properly seated.
- Restart the Unit to Prime the Pump: After refilling, restart your Convotherm 4 C4 unit. The system will attempt to prime the rinse aid pump and fill the lines. You may need to perform this restart cycle several times (e.g., three to five times) to completely purge air from the dispensing lines.
- Inspect Dispensing Lines: Carefully examine the transparent rinse aid dispensing lines for any visible kinks, blockages, or excessive air bubbles. Air pockets can prevent proper flow and trigger the error. If blockages are found, gently clear them or replace the line if damaged.
- Check for Leaks: Look for any signs of rinse aid leakage around the pump, lines, or connections. A leak can cause a loss of prime or insufficient pressure, leading to the error. Tighten any loose connections.
- Listen for Pump Operation: During a cleaning cycle or while attempting to prime, listen closely for the sound of the rinse aid pump operating. A silent pump may indicate an electrical issue or a seized pump motor.
- Test a Cleaning Cycle: Initiate a full automatic cleaning cycle. Observe if the rinse aid is being dispensed into the cooking chamber. If the E59.0 error persists during or after the cycle, further investigation is required.
- Consult Wiring Diagrams and Test Pump (Advanced): If the issue continues, an experienced technician should access the internal components. This involves checking the electrical connections to the rinse aid pump, testing for voltage at the pump, and potentially testing the pump’s resistance or operation directly. The control board output to the pump should also be verified.
- Replace Rinse Aid Pump: If the pump is confirmed to be faulty (e.g., no operation with power, internal blockage, or wear), replace it with a genuine Convotherm rinse aid pump part. Ensure proper installation and connection, followed by priming.
- Contact Convotherm Certified Service: If the above steps do not resolve the E59.0 error, or if you are uncomfortable performing internal diagnostics, contact a Convotherm certified service technician for professional diagnosis and repair.
Common Questions:
Q: What is rinse aid and why is it important in my Convotherm oven?
A: Rinse aid, often called drying agent, is a chemical solution used in the final rinse cycle of your Convotherm oven’s cleaning program. It reduces water surface tension, preventing water spots and streaks, and aids in faster drying, leading to a sparkling clean cooking chamber and optimal hygiene.
Q: How often should I check the rinse aid level on my Convotherm 4 C4?
A: It’s recommended to visually check the rinse aid level daily or before starting any cleaning cycle. This proactive check helps prevent interruptions to your cleaning process and avoids errors like E59.0 due to an empty canister.
Q: What if refilling the rinse aid and restarting the unit doesn’t resolve the E59.0 error?
A: If simple refilling and restarting don’t clear the error, inspect the rinse aid lines for kinks, blockages, or leaks. Air trapped in the lines can also cause issues, requiring repeated restarts for priming. If the problem persists, the rinse aid pump itself might be faulty, requiring professional inspection and possible replacement.
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.