FlowMax · Combi boiler

OFF Switched off, frost protection still active

Normal status FlowMax condensing combi (FLOWMAX-120)

What the display is showing

The word OFF is shown when the ON/OFF switch on the control panel is in the off position. This is normal. Frost protection for the heating and hot water circuits stays enabled, and if the unit was running it carries out its fan post-purge, pump overrun and 3-way valve exercise functions. A connected remote control stays lit.

Applies to: FLOWMAX-120 condensing combi water heater

Settings for these units

Installation clearances · FlowMax condensing combi (FLOWMAX-90/120)
Hot water scald risk by temperature · FlowMax condensing combi (FLOWMAX-90/120)

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
PL 0 Parameter menu entered

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Source: FLOWMAX-120 Instruction Manual, 2.6/2.7 Operation / Functions display and Control panel, p.15. 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.