Soleus Air HCB-R135-A-ID Installation And Operating Instructions Manual page 16

SELF-DIAGNOSIS SYSTEM MALFUNCTION CODES
SELF-DIAGNOSIS
The appliance has a self diagnosis system to identify a number of malfunctions.
Error messages are displayed on the appliance display.
Problem
Room temperature sensor does not work
Evaporator does not work
Defrosting temperature sensor does not
work
Digital Display
E1
E2
E4
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