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OK, I’ve opened my Bykski DDC pump fitted to my 7000D disto place and it’s identical to the Barrow DDC pump fitted to the LTPRP-04 - both circuit boards are labelled as “Q2C-12B”.
Also, this video shows the factory “Q2C-12B” pump in the Barrow LTPRKA-04, and others on Reddit etc have reported success in swapping this out for an EK DDC.
Given this, I’ll go ahead and buy the EK DDC 4.2 PWM pump to replace my Bykski “B-PMD3-COV” and report back my findings next week.
The push to return to office is nothing more than a push to thin out the numbers. Much cheaper for them to jump themselves than be pushed by management.