Bosch SHE4AM12U Repair Instructions page 39

Digital error codes E:08 – E:13
are shown with one LED
display: . They have
different causes, such as faulty
heat pump, faulty
module or insufficient water
supply.
Troubleshooting is needed to
determine the cause.
6.1.4.5 Filling error codes
Digital display
E:14 Flow meter error

 Code not used (no flow meter)
 E:15 Water in base
 Code not used (bases are open)
E:16 Volume flow without activation

 Code not used (no flow meter)
 E:17 Volume flow too high
 Water volume too high, safety float
activated
 E:18 Volume flow too low
 Water volume too low, heat pump
motor load too low.
 Check water supply
702_58300000130262_ara_en_c
power
LED display
Same
display shows
for error codes
E:14 – E:18.
6.1.4.6 Heat pump error codes (circulating)
Digital display
E:20 Heater error

 Heater system check failed;
functional safety error.
 Replace heat pump
 E:21 Blockage
 Heat
circulate and clear blockage.
 Replace heat pump
LED
pump unable to
LED display
Same LED display
shows for error
codes E:20 – E:21.
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