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FlowMax · Combi boiler

PL 0 Parameter menu entered

Menu / mode display FlowMax condensing combi (FLOWMAX-120)

What the display is showing

The display reads PL and 0 once the parameter menu has been opened. It confirms that the control is ready for parameter selection and is not a fault.

Applies to: FLOWMAX-120 condensing combi

What to do

  1. Switch the ON/OFF switch to OFF.
  2. Switch it back ON while holding the + and - buttons.
  3. Release both buttons when PL and 0 appear.
  4. Hold S and press + to choose a parameter number, release S, then press S again to see its value.
  5. Change the value with + or -, press S to confirm, then switch the unit off and on to apply it.

Settings for these units

Other codes on the same units

  • 07 Flue test (chimney sweeper) function active
  • 08 Frost protection active
  • 22 Fan frequency readout (parameter 22)
  • 28 Legionella prevention cycle active
  • Curve number Compensation curve number display
  • OFF Switched off, frost protection still active

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Source: FLOWMAX-120 Instruction Manual, 5.2 Setting the parameters, p.40. Summarized in our own words; check the original manual for your model.

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.