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FlowMax · Combi boiler

31 Incompatible remote control

Low severity FlowMax condensing combi (FLOWMAX-90/120)

What the control is telling you

Function code shown when the connected remote control is not compatible with the circuit board.

Applies to: FLOWMAX-90, FLOWMAX-120

Likely causes

  • Remote control model not compatible with the board

Test and repair steps

  1. Check the model of the remote control connected to the terminal board.
  2. Replace it with a compatible remote, or disconnect it and use the unit's own controls.

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Source: FlowMax FLOWMAX-120 Instruction Manual, 6.11 Diagnostics, Function codes, p.67. Summarized in our own words; check the original manual for your model.

Homeowner looking at this code? See what it means for you and when to call a technician.

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.