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RESOL DeltaSol Controllers & Sensors

RESOL controllers are fitted to many Australian solar hot water systems, most commonly under the Apricus, Thermann, Conergy, AusCaps and Stratco badges. We stock the current DeltaSol range, the matching 20m roof sensors, and the accessories that go with them.

✔ Important: the BS/4 has been superseded

The RESOL DeltaSol BS/4 — both the 1-2 sensor and 1-3 sensor versions — has been replaced by the DeltaSol SLL. If you're replacing a BS/4, order the SLL. We list both so you can find the page either way.

✔ Controllers we stock

  • DeltaSol SLL — 1-2 sensor, the current standard replacement
  • DeltaSol BS/4 — 1-2 and 1-3 sensor versions, including variants for Apricus, Thermann, Conergy AusCaps and DUX AusCaps systems
  • DeltaSol BS/2 — 1-3 sensors
  • DeltaSol BS Plus — 1-3 sensors and full kit (special order; not suitable for Apricus or Thermann units, which need the BS/4 or SLL)
  • DeltaSol AX — used in early model Apricus systems
  • DeltaSol AL

✔ RESOL sensors

20m roof sensors to suit Thermann, Conergy, AusCaps, Stratco and Apricus controllers, plus 1.5m and 2.5m RESOL roof sensors and RESOL tank sensors.

✔ Accessories

4A can fuse, SP10 sensor over-voltage protection, HR230-compatible switching relay, AM1 VBus alarm, DL2 datalogger, VBus/LAN and VBus/USB interface adaptors.

✔ Which one fits?

Count the sensors on your system and check the badge on the front. If you're stuck, email sales@solarhotwaterparts.com.au a photo and we'll confirm.