arcelik BEKO COSMOS, Service Handbook, Page: 243 / 274

SBS COSMOS
REFRIGERATOR
10.01.2014 / REV NO: 03
113
Sensitivity: Public
13.5. E4 Freezer defrost heater error
E4 Error flashes
Open freezer eva cover and check if
defrost sensor is in place
Place sensor back in place
Yes No
E4:
Freezer
Defrost
Heater
Error
Turn on the refrigerator
Yes
Yes
Is the value suitable?
Is sensor in place?
Plug the refrigerator to wattmeter and
operate freezer defrost heater in
service test. Check if the value read
from wattmeter conforms to the total
power of defrost drain heater
Is it running in service
test when compressor is
not active?
Yes No
Replace control board
Check if the refrigerator gives
error 7 days later.
Open Freezer eva cover, remove
defrost heater and drain heater
connectors and measure their
resistance. Replace short-circuits or
open circuits if any. Measure thermic
contacts. Replace open circuits if any.
No