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55 Matrix

  • Connection diagram / port overview
  • Function »Heating– Cooling«
  • Setting the corresponding parameters
  • Setting the target temperature
  • Operating lock
  • Set display to standby mode
  • Switching the device on / off
  • RMO (operating mode)
  • BOS (Boost)
  • PRG (heating program)
  • Setting up heating programs
  • VAT (Temperature holiday mode)
  • BRW / BRS (Display brightness)
  • NET (Set up WiFi)
  • DAT (date, time)
  • SWT (summer time / winter time)
  • INS (Installer)
  • CMO (control algorithm)
  • WEH (type of heating)
  • SMO (sensor mode)
  • DIF (Hysteresis)
  • ADP (Smart Start)
  • FLT (Temperature limiter floor sensor)
  • VAL (operating principle)
  • VPA / VPD (Valve protection)
  • TSS (Temperature Unit)
  • WMO (manual heating / cooling)
  • CAR / CAF / CAE (calibration)
  • ALO / AHI (setpoint limiter)
  • FLO / FHI (setpoint limiter)
  • ELO / EHI (setpoint limiter)
  • ANT (time automatically)
  • COL (block cooling)
  • FAC (factory reset)
  • ESC (exit)
  • Alpha smart app
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  • Systemauswahl
  • Alpha thermostat direct
  • 55 Matrix
  • FLT (Temperature limiter floor sensor)

FLT (Temperature limiter floor sensor)

Depending on the desired maximum floor temperature, this can be selected between 25°C and 60°C (77°F and 140°F). The resulting surface temperature will naturally vary depending on the positioning of the floor sensor and the floor structure.

Prerequisite for use:

  • floor sensor must be connected
  • be set in sensor mode (SMO): F, AF, A2F

ATTENTION
The EF 20201-N cannot be used as a temperature limiter in combination with electric underfloor heating systems!

→ See the applicable standards for electric panel heating elements:

  • DIN EN 60335-1
  • DIN EN 60335-2-96

Updated on January 26, 2026
ADP (Smart Start)VAL (operating principle)

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