S51M53X1GB/01 heat pump

[oscar123]

Are the heat pumps interchangeable? This one was E09 and heater no circuit. Had a pump on the van as Connect were knocking them out for about £40.. Now it only heats up to about 35c? I have been back and fit new PCB as assumed heater may have damaged PCB as it did trip the fuse.

Checked part number of pump fitted against parts list and they are different! Am i missing something or are Bosch just being uncts?

[electrofix]

Re: S51M53X1GB/01 heat pump

the heater assembly not only contains the element but 2 ntc’s

if the 2 motor units have different ntc values then it wont heat properly

Dave

[char14lew]

Re: S51M53X1GB/01 heat pump

Thanks Dave, changed the relays only not ntc. I’very checked the resistance of heater and ntc from the service information and they check ok.
Thanks for all your help!

[Author]

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