WMF Series 8400 bistro Service Manual page 31

149 F149 General voltage
malfunction: current
consumption of the 24/30 V
power supply too high
157 Battery must be replaced
161 F161 DFM Brewing
malfunction, but water
pressure is o.k.
162 F162 DFM Malfunction
during cleaning, but water
pressure is o.k.
165 F165 DFM Malfunction in
choc dosage
170 Steampower sensor
damaged
171 Steampower
overtemperature or
sensor short
186 F186 In steam boiler supply
189 F189 Steam boiler heating
time
9042 Steam boiler low water
level
9061 Standby Event
9062 Reset event!
Service manual WMF bistro! Edition 08/2011
WMF bistro! Service manual
√ √
√ √ Batterie voltage too
low to preserve data.
Data is automatically
stored in service
memory.
√ √ Minimum flow not
available, < 1 pulse in
1 sec, measured for
five seconds
√ √ Minimum flow not
available, < 1 pulse
per second, measured
over 5 s
A forced cleaning
follows.
√ √ Minimum flow not
available, < 1 pulse
per second, measured
for 5s
√ √ Resistance at adressing
entrance of sensor
tends towards zero
√ √ Resistance at sensor
entrance infinite
√ √
√ √
√ √ NLW electrode without
contact
√ √ Coming and going
√ √ Coming and going
165
F170
see table 7.4
see table 7.3
31