HVACopediaFlowMax · Boiler · Standby/shutdown
Switched OFF at the control panel
What happens, in order
- Display shows OFF
- Heating and DHW frost protection stay active
- If the unit was running, post-ventilation, pump overrun and 3-way valve anti-seize function still complete
- Remote control, if fitted, stays lit and active
- For a long shutdown either cut gas and power and drain heating system and condensate trap, or leave on standby so frost protection keeps working
Applies to: FLOWMAX-90, FLOWMAX-120
Models
More FlowMax boiler sequences
- Switch-on and mode selection · Startup
- Heating call with restart delay and pump overrun · Heating
- DHW call with pump overrun and priority · Domestic hot water
- Heating and DHW frost protection · Freeze protection
- Flue test and legionella functions · Other
Related
Take it to the job
Sequences of operation, error codes and tips work offline in the HVACopedia app.
Source: FLOWMAX-120 installation manual (DIGITECH PCB SM20021, parameters 4-8, function codes 07/08/28); FLOWMAX-90 user manual (control panel, start-up, diagnostics). 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.