Panasonic · Heat pumps · Panasonic Aquarea T-CAP Monobloc, generation J (R32)
H28Abnormal solar sensor
Name in the manufacturer's documentation (service manual): Abnormal solar sensor
[1]
In plain words (editorial)
The heat pump has detected a fault of the solar sensor (its reading is used to detect a sensor error). The service manual names a faulty connector connection, the sensor itself or the indoor sub PCB as causes.
When to call a service technician: Contact the installer or Panasonic service – the sensor, its connector and the PCB are checked inside the unit.
✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.
For technicians
Detection conditions (source text)
- Continue for 5 seconds.[2]
Possible causes (source text)
Safety notes from the documentation
- Always switch off the power before remove and connect the component.[6]
⚠ Work on refrigerant circuits, mains electricity and PV DC wiring is for qualified technicians only.
The Polish page has more detail (plain-language explanation, safe checks, guides): Read in Polish →
Sources
Every statement has a footnote to the document and PDF page. “Quote verified” means the quote was found automatically in the text of that page.
- [1] Service Manual – Mono Bloc Unit WH-MXC09J3E5 / WH-MXC12J6E5 (Aquarea T-CAP, R32) (PAPAMY2101001CE) , p. 164 official manufacturer document quote verified
H28 Abnormal solar sensor
- [2] Service Manual – Mono Bloc Unit WH-MXC09J3E5 / WH-MXC12J6E5 (Aquarea T-CAP, R32) (PAPAMY2101001CE) , p. 171 official manufacturer document quote verified
Continue for 5 seconds.
- [3] Service Manual – Mono Bloc Unit WH-MXC09J3E5 / WH-MXC12J6E5 (Aquarea T-CAP, R32) (PAPAMY2101001CE) , p. 171 official manufacturer document quote verified
Faulty connector connection.
- [4] Service Manual – Mono Bloc Unit WH-MXC09J3E5 / WH-MXC12J6E5 (Aquarea T-CAP, R32) (PAPAMY2101001CE) , p. 171 official manufacturer document quote verified
Faulty solar sensor.
- [5] Service Manual – Mono Bloc Unit WH-MXC09J3E5 / WH-MXC12J6E5 (Aquarea T-CAP, R32) (PAPAMY2101001CE) , p. 171 official manufacturer document quote verified
Faulty indoor sub PCB.
- [6] Service Manual – Mono Bloc Unit WH-MXC09J3E5 / WH-MXC12J6E5 (Aquarea T-CAP, R32) (PAPAMY2101001CE) , p. 171 official manufacturer document quote verified
always switch off the power before remove and connect the component.