HVACopediaBosch · Heat pump · Other
Oil return and force (charge) mode
What happens, in order
- Oil return runs when the compressor has been at low speed for a long time; the display shows A with the compressor frequency
- Force mode is entered manually from the Force button and forces the compressor to 100 percent capacity in cooling, used for checking superheat/subcooling and charging
- Display shows a dash pattern with the frequency during force mode
Applies to: Bosch IDS 2.0 heat pump condensing units
Models
BOVA-36-60HDN1
More Bosch heat pump sequences
- Crankcase heater and reversing valve behaviour · Startup
- Demand defrost · Defrost
- Manual (forced) defrost test · Defrost
- Operating limits and compressor protections · Other
Related
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Source: Bosch IDS 2.0 (BOVA-36-60HDN1) service manual Rev3 07.2021, 10.2 Other operations. Written in our own words; timings can differ by model and software version, so check the manual for your exact unit.
For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.