The Mitsubishi power board S700B2313 (part code 206599) is confirmed to be compatible with several specific outdoor heat‑pump units.

Compatible Mitsubishi units
•     PUHZ‑HW100YHA2.UK — listed as the matching power board for this outdoor unit.
•     PUHZ‑P100VHA2 and PUHZ‑P100VHA3 — as compatible with the S700B2313 power board.
These are all Mitsubishi Electric PUHZ‑series outdoor units, typically used in Ecodan heat‑pump systems.

Mitsubishi PCBs are tightly matched to:
•     The inverter design
•     Compressor control logic
•     Power-handling specifications
•     Firmware and connector layout