Whale Expanse PCB Gas & Electric Main 782.115 AK1900

Original Whale Expanse main PCB 782.115 for gas and electric water heaters on selected DW and IW Expanse models. Genuine Whale “Expanse Main PCB 782.115” supplied under kit/part code AK1900. Designed for combined gas and 230 V electric Expanse water heaters, controlling all heating modes from a single board. Acts as the central controller for i...

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Description

Original Whale Expanse main PCB 782.115 for gas and electric water heaters on selected DW and IW Expanse models.

  • Genuine Whale “Expanse Main PCB 782.115” supplied under kit/part code AK1900.
  • Designed for combined gas and 230 V electric Expanse water heaters, controlling all heating modes from a single board.
  • Acts as the central controller for ignition, temperature regulation, element and gas valve drive, and safety lock‑out functions.
  • Direct OEM replacement for a failed or damaged main PCB; not a universal board and must match the supported Expanse model codes.