Tests to be performed: NO Clean the filter and restart the diagnostic cycle to check for further alarm conditions. Is the drain filter clean? YES NO Disconnect and check the drain system. Is the drain system OK? (drain hose and domestic hydraulic circuit)- fig.1 YES Does the drain pump function? (in the diagnostic cycle, select phase 2 fill and Replace the pump and restart the diagnostic cycle to check for further alarm conditions. phase 8 drain) (noise from the pump) YES Check and if necessary replace the wiring and restart the diagnostic cycle to check for further alarm conditions. Replace the circuit board and restart the diagnostic cycle to check for further alarm conditions.
YESI Clean or replace the drain pump and restart the diagnostic cycle to check for further alarm conditions. Repair the hydraulic circuit of the pressure switch and restart the diagnostic cycle to check for further alarm conditions. Replace the pressure switch and restart the diagnostic cycle to check for further alarm conditions. If there are traces of burning on the circuit board, refer to page 59 2007-10 SOI/DT-mdm FCPD-dp Quality-fz 22/59 599 70 32-47 E21: Difficulties in draining E21 E21 Maximum drain time exceeded (measured for each phase of the cycle) Is the ohmic resistance of the pump about 155- 200Ω?
(measure directly on the connector on the circuit board side across J7-9 and J7- 1) -fig. 4- YES Is the pump impeller jammed or broken? NO Is the ohmic resistance of the pump about 155- 200Ω? (measure directly on the pump) -see fig.5- YES NO NO NO Is the hydraulic circuit of the pressure switch efficient? (i.e. not obstructed) NO YES