Bosch DOMESTIC HOT WATER HEAT PUMP Technical Manual page 25

Electric test to compressor:
Check earth connection
C – chassis ≠ 0
S – chassis ≠ 0
R – chassis ≠ 0
Attention: In case of continuity the compressor is defected
Thermal Protection
This function is ensured by a bimetallic temperature limiter which opens its contact when high temperature
(T=160ºC ±10ºC) is reached during operation.
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Pict.30 – Testing of compressor
Pict.31 – Testing of thermal protection limiter
6720649497 SM HP270-1 2012/09 en