Convotherm Combi Oven Error Code E58.0: Cleaning Pump
E58.0 on a Convotherm C4 reads Cleaning agent dispensing pump fault. Fill the canister with the correct cleaning agent and restart the unit, repeating if necessary until the lines are filled. If it will not clear, contact Customer Service.
Low: only the automatic cleaning cycle is affected; the oven still cooks.
- Code
- E58.0
- Maker
- Convotherm
- Equipment
- Combi ovens
- Applies to
- Convotherm 4 (C4 easyTouch / easyDial, incl. Maxx pro)
What does Convotherm error code E58.0 mean?
The automatic cleaning cycle in a combi oven draws cleaning agent from a canister with a dedicated dispensing pump and pushes it through lines to the cabinet. Before and during cleaning, the control checks that the pump is moving liquid. If the canister is empty, air is in the lines, or the pump does not deliver, the check fails and the display shows E58.0 Cleaning agent dispensing pump fault. The oven still bakes and steams, but it cannot carry out the cleaning cycle until the pump delivers again. Because the pump relies on liquid to prime itself, an empty canister is the most common reason and costs nothing to fix. The manual's step reflects that: refill the canister and restart, and repeat if necessary so the lines fill. A pump that was run dry can take a few attempts to draw cleaner through.
Affected models and control systems
Floor-standing Convotherm 4 (C4) combi ovens, taken from the UL / USA operating manual; table-top and maxx pro units are not mentioned in the part we read.
Code numbers and their meaning can change between control generations. We match the full model and control before acting on a code.
What you may notice
- E58.0 shown when you start an automatic cleaning cycle
- Cleaning cycle stops or does not start
- Canister empty or low
- Oven cooks normally
Possible causes
Likely causes — what usually sits behind error code E58.0 on this control. A technician confirms which one it is before any part is replaced.
- Canister empty or nearly empty
- Air in the cleaning lines after a canister change
- Suction tube not fully submerged or not reaching the bottom
- Pump worn out or blocked by crystallized cleaner
Safe checks before calling for service
- Check the cleaning agent canister and fill it with the cleaning agent the manual calls for.
- Make sure the suction tube sits fully in the liquid and the cap is seated.
- Restart the unit.
- If the code appears again, refill the lines by repeating the restart as the manual allows.
- If E58.0 persists, contact Customer Service and note the type of cleaner and when the canister was changed.
How a technician diagnoses error code E58.0
- Read E58.0 and the history to see whether it appears only at cleaning.
- Check the canister, suction tube and line connectors for leaks that let in air.
- Prime the lines and listen for the pump running.
- Measure the voltage to the pump when cleaning is requested.
- Test the pump for blockage or seizure.
- Replace the pump or lines only after the prime test fails.
- The cleaning agent is a caustic chemical, and opening the lines risks skin and eye contact.
- Pump voltage must be checked with the control powered, behind the panel.
- Clearing a blocked or crystallized pump means disassembly of chemical lines, which has to be done and rinsed correctly.
How error code E58.0 differs from similar codes
E59.0 is the matching message for the rinse aid pump.
Technical reference
- Maker documentation
- Convotherm owner support
- Edition
- 9761695_06 engUSA 05/22
- Models / control
- Convotherm 4 (C4 easyTouch / easyDial, incl. Maxx pro)
- Section
- 6.2.1 Error codes (Errors and required responses), pp. 105
- Checked
- October 2026
We use the maker's document to read the code and do not reproduce it. Always confirm the complete model and control before applying these steps.
Related Convotherm combi oven error codes
Can the oven cook with E58.0 showing?
Yes, normal cooking is unaffected, but automatic cleaning cannot finish.
Why do I have to repeat the restart?
The manual says to repeat if necessary until the lines are filled, since the pump needs to draw liquid through them.
Is the cleaning pump the same as the rinse aid pump?
No. They are separate pumps with separate codes, E58.0 for cleaner and E59.0 for rinse aid.
Need help with Convotherm error code E58.0?
A technician confirms the cause on site and gives you the price in writing before any work starts.