I have a black label VDM (purchased used) that recently just died. I had to Tunze 6055 connected into the V1/V2 ports and things were working for a little over a week then those ports just died. Switch to V3/V4 and that port worked for a day. When I disconnect the Tunze/Apex cable the pumps run fine and the ports while flash green intermittently and then stop flashing altogether.

Anyone else ever experience this?


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