Manitowoc Ice E09

What does Manitowoc Ice E09 mean?

Code E09 is the evaporator-flooding fault for circuit 1 (single-circuit, single-evaporator machines): during the first 6 minutes of the freeze cycle, the average compressor discharge-line temperature (T2) fell below the average of the six previous cycles — the board's flooding-evaporator signature.

Symptoms

• E09 in the event log
• Cooler-than-normal discharge line early in freeze
• Possible compressor noise or sweating suction line

Common causes

• TXV overfeeding (flooding)
• Ice thickness/cycle control ending harvest with liquid still in the evaporator
• Charge above nameplate after a bad service top-up

Diagnostic steps

1. 01

   Confirm the trend

   Check the event log for repeated E09 entries versus a one-off after a cleaning cycle or cold restart.

2. 02

   Verify the charge

   An overcharged critically-charged machine floods; recover and weigh in the exact nameplate charge if service history is doubtful.

3. 03

   Evaluate the TXV

   Follow the flooding-TXV branch of the freeze-cycle analysis (discharge temperature behavior each cycle) to confirm valve overfeed.

4. 04

   Protect the compressor

   Do not keep running a persistently flooding machine; repair the cause first.

When to call a professional

Refrigeration-circuit work on this machine (gauges, refrigerant recovery, TXV or compressor replacement) requires an EPA-certified refrigeration technician, and Indigo units built on R290 propane additionally require flammable-refrigerant service procedures. If the fault returns after the basic checks here, book a qualified ice-machine technician rather than continuing to reset the unit.