Why am I seeing erroneous shunt current readings on my TPDIN-Monitor-WEB2 and TPDIN-Monitor-WEB3?

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Electrical noise from MPPT Solar controllers or noisy power sources can cause erroneous shunt current readings on the WEB2 and WEB3. The reading will seem to fluctuate widely.

  1. To improve this issue, be sure that the WEB2/3 is connected to the Battery- in the system.
  2. V- connection is located on Connector 7 in the WEB2/3. This will ensure that the WEB2/3 is properly grounded to increase noise immunity.

Note: The FG connection on the WEB2/3 should also be connected to earth ground for surge protection to work properly.

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