Redmond RMC-PM190A User Manual page 20

VI. BEFORE CONTACTING SERVICE CENTER
Error Code
Е1, E2, E4
The packaging, user manual and the device itself shall be taken to the applicable collection point for the recycling of electrical and electronic
equipment. Do not throw away the electronic waste with household trash.
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Error Description
System error (possible control board, pressure or tempera-
ture sensor malfunction).
Error Handling
Unplug the unit and let it cool down for 10-15 minutes. Close
the lid tightly. If this does not eliminate the error, contact an
authorized service center.