Electrolux WTCS90ERB - Page 85

DOC. NO. 5956.573.05 P. 8 5 / 8 8
Electrolux
EFS - Dishwashing Systems Platform
Electrolux Professional
W+R
PWW+RDT
W+R
DT
BUS CABLE
YES
NO
YES
Check the wiring, the through-wall fittings
(XC_3 - Wash+Rinse zone) and the connec-
tors between board AP1 in connector J25
and MEC board A7 in connector F1/F4, and
repair/replace if necessary.
NO
Replace MEC board A7 (DT/HAB zone).
YES
NO
Replace MEC board A2 (Wash + Rinse
zone).
Replace MEC board A4/A5
(Prewash zone).
END
Check the correct power supply
230V (-15%; +10%) on board
MEC A7 (DT/HAB zone) in con-
nector F1/F4 (see Layout 7 -
page 70 - contacts 1 and 2).
Check if on disconnecting the bus
cable from MEC board A7 (DT/
HAB zone) the CoM Err4 alarm or
CoM Err 2/4 alarm change to CoM
Err4 or CoM Err 3-4 alarm chang-
es to CoM Err 4.
Disconnect the bus cables con-
nected to the Wash+Rinse card (1
or 2 depending on the type of ma-
chine). Does CoM Err 2-3-4 alarm
become CoM Err 2-4 or CoM Err
2-3 alarm become CoM Err 2?
NO
NO
Reconnect the bus cable to MEC board A7 (DT/HAB zone).
Is the Prewash installed?
NO
YES
COMMUNICATION CABLE PATH