Convotherm E28 Error Code

What does Convotherm E28 mean?

Convotherm shows E28 — Error from SSR temperature sensor for oven heater — on the maxx pro combi oven range. This is a collective SSR temperature-sensor code: it can flag a fault or a high-temperature reading on either the oven-heater or the boiler-heater SSR sensor. The manual lists this reason: The software setting is incorrect. The control flags the fault and holds the affected function until the message is cleared.

Symptoms

• Display shows error code E28 (Error from SSR temperature sensor for oven heater)
• The affected function is interrupted until the fault is cleared

Common causes

• The software setting is incorrect

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Diagnostic steps

1. Have a software update performed

   Have a software update performed If the error still appears, contact the responsible service partner (make a note of the message on the display)

When to call a professional

The manual routes E28 (Error from SSR temperature sensor for oven heater) to the responsible Convotherm service partner. Note the exact message on the display, stop using the affected function, and call a qualified technician — board, sensor and electrical diagnosis on a combi oven involves live components.