Bosch SHE4AM12U Repair Instructions page 44

6.3.3 Heat pump terminal measurements
There are two connectors, 7-pin and 3-pin.
6.3.3.1 7-pin connector (heater / NTC's / pump ground)
The 7-pin connector connects to the heat pump heater, NTC's
and ground.
Pump Motor
7 6 5 4 3 2
6.3.3.2 3-pin connector (3-pole BLDC motor)
The 3-pin connector connects to the 3-pole BLDC motor. The
power control module controls motor speed, starting and
stopping.
702_58300000130262_ara_en_c
7 – NTC 1
6 – NTC common
5 – NTC 2
4 – Line (hot)
3 – X1 (heater common)
2 – Neutral
1 – Ground
1
6.3.4 Drain pump
There is a single 3-pin connector,
connecting to the 3-pole BLDC
pump motor.
Resistances as follows:
1 – 2: 90 Ω (@ 72 ºF)
2 – 3: 90 Ω (@ 72 ºF)
3 – 1: 90 Ω (@ 72 ºF)
6.3.5 Error code E:25 from loose drain pump cover
If a dishwasher doesn't drain properly and / or shows an E:25
error code, the problem could be the drain pump cover wasn't
replaced properly (i.e. not completely seated and locked into
position). Loose drain pump covers allow more water flow to the
drain pump, increasing the pump load, drawing more current and
causing an E:25 error code.
The Clean light can come on, giving the impression the
dishwasher finished it's cycle when it actually didn't.
Occasionally E:23 and E:24 error codes can occur as well.
1. Drain pump cover
1
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