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Operating Instructions UPster H 500 / H 500S
Table 2: Information displays
18.2 Error messages and troubleshooting
Figure 3: Error messages
Error messages will disappear automatically when the fault has been rectified.
Error messages (extract)
9735020
Info No.
Description
720
Regeneration in progress
723
Regeneration necessary
ERR.-No. Description
001
EEPROM plug-in fault.
201
Boiler level not reached during
1st filling (only machines with
booster pump installed)
202
Boiler level not reached on time
during filling (only machines with
booster pump installed)
203
No change detected by the plug
connector when emptying (only
machines with booster pump
installed)
204
No change yet detected by the
plug connector (only machines
with booster pump installed) after
the rinse time expired.
205
Boiler temperature not reached
after max. Heat time (P.310)
Design and construction subject to change without prior notice!
Page
Possible cause
Regeneration program has started and
is in progress. (It is possible to pause
the program, but not cancel it.)
The user must start the regeneration.
(empty tank, add salt!)
Possible cause
EEPROM not available / incorrectly
plugged in / defective
Empty or incorrect EEPROM
Replace EEPROM with correct parame-
ter set
Fresh water inlet insufficient (water fau-
cet closed)
Entering supply hose kinked
Inlet filter soiled
Solenoid valve faulty
Boiler switch defective
See 201
Boost pump defective
Booster pump plug connector loosened
Start capacitor defective
Plug connector loosened
Plug connector loosened
Boiler level switch defective
No boost pump signal to - from in-
put/output circuit boards
Check boost pump DSP / S2 using
manual control
See 203
Boiler heating defective / thermal fuse
radiator
Temperature sensor defective, incorrect
installation position
Boiler contactor defective, performance
switch loosened
No signal from I/O board
36
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of
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Troubleshooting
