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ON/OFF—To turn On/Off the
thermostat and GFCI reset
Temperature
adjustment
ring
To program
and view the
schedule
To clear a
program
Day
setting
The FLP12 programmable thermostat, specially designed for floor
heating installations, is equipped with two ultra-precise sensors
which allow temperature control by separately monitoring both floor
and ambient settings, thus providing greater comfort.
DIP SWITCH CONFIGURATION
The control module has four DIP switches to select the following
options:
Time and Temperature
Display (1)
°F/12h
°C/24h (default)
Early Start (2)
E.S. On
E.S. Off (default)
This function determines the optimal system start time to obtain the
desired temperature by the set time. When this function is enabled, the
system can be activated a few hours before the program's start time.
Temperature Control (3)
This model offers the following three types of temperature control:
Temp.
Switch
control
position
Ambient with
DOWN (AF)
floor limits
Floor
UP (F)
(default)
Use only when floor sensor is not installed.
Ambient
DOWN (AF)
Permanent Backlight (4)
P.B. On (The display remains lit all the time.)
P.B. Off (default. The display is lit for 12 seconds when the
adjustment ring or any button is pressed.)
GFCI test
button and
warning light
Comfort,
Economy and
Vacation
setpoints
To select a mode
or to exit
programming
mode
Time
setting
Notes
Requires a floor sensor
Requires a floor sensor
Not recommended for floor heating
FLP12 - Control Module
Current program number when
Automatic mode is activated
Vacation
mode
Floor
minimum
and
maximum
temperature
(AF only)
Manual
mode
Current time
and day
INSTALLATION
Align the bracket tabs on the
control module with the holes
located on top of the previ-
ously installed power base
and secure the module to the
base.
NOTE:
Keep the thermostat's air vents clean and free from
obstructions.
First Power On
When power is applied for the first time, the
screen displays 0:00 MO (Monday) as well as
the ambient/floor temperature.
If a problem occurs, one of the following mes-
sages will be displayed:
LO:
the temperature is below 0°C (32°F) The
heating indicator is displayed and the system is activated.
HI:
the temperature is above 70°C (158°F).
Er:
the floor sensor is not connected properly or defective (temp.
control F) or the ambient sensor is defective (temp.
control AF).
To verify if the thermostat detects the floor sensor, select the
temperature control F (see DIP Switch Configuration). If the screen
displays Er, the floor sensor is not connected properly or defective.
If the screen displays the temperature, the sensor works.

User Guide

Indicates the amount
of power sent to the
floor heating system
Room or floor
temperature.
Arrow indicates
a setpoint
Economy setpoint
Comfort setpoint
9/14/07
1/4
400-610-000-E

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Questions and answers

Steve Rzepecki
May 15, 2025

Hi, I have a flp12 thermostat that is heating my basement floor. There is a section of the floor that is cold. The rest is ok. I tried to test the gfi on that thermostat, but it would not light up . I have 2 other thermostats in the basement and they are working fine.

User image 68252e9707a9d
1 comments:
Mr. Anderson
May 21, 2025

If the Flextherm FLP12 thermostat is not heating a section of the floor and the GFI (Ground Fault Indicator) does not light up when tested, the issue could be that the GFCI test failed. This indicates a problem with the ground fault protection. According to the manual, if the TEST warning light is OFF after pressing TEST, power to the floor heating system should be cut from the main power panel, and customer service should be contacted. This suggests a malfunction in the GFCI or wiring, preventing the system from operating safely.

This answer is automatically generated

Richard Lawton
January 19, 2025

Je demande à mon thermostate 21 degré et alors mon thermostate déclenche correctement, me montrant le signe qu'il chauffe (le signe ''chauffe'' affiche sur le thermostate) mais le plancher ne chauffe pas...et le thermostate reste afficher à 18 degré. Mon plancher chauffant est installé avec ce thermostate depuis 15 ans. ??? d'o vient le problème...???

1 comments:
Mr. Anderson
February 4, 2025

If the Flextherm FLP12 thermostat shows a heating sign but the floor does not heat and remains at 18 degrees, the issue could be:

1. Defective or Improperly Connected Floor Sensor: If the floor sensor is not connected properly or is defective, the thermostat may not accurately detect the floor temperature. To verify, set the thermostat to "temperature control F" as per the DIP Switch Configuration. If the screen displays "Er," the floor sensor is defective or not connected properly.

2. Incorrect Sensor Configuration: Ensure the thermostat is configured correctly for the floor sensor ("F" mode). Using the wrong setting (e.g., "AF" or "AF DOWN") may cause improper operation.

3. System Malfunction: If the floor sensor works and the configuration is correct, the issue could be with the heating system itself, such as wiring or heating cables.

This answer is automatically generated

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Summary of Contents for Flextherm FLP12

  • Page 1: User Guide

    Current time setting Time and day setting The FLP12 programmable thermostat, specially designed for floor INSTALLATION heating installations, is equipped with two ultra-precise sensors which allow temperature control by separately monitoring both floor Align the bracket tabs on the and ambient settings, thus providing greater comfort.
  • Page 2 Setting the Time and Day Vacation Setpoint Press D, to access the menu. This preprogrammed setpoint is used when the Vacation mode is activated. To modify this value, repeat above steps. Press to set the time. Press to select the day. Default: 10°C (50°F) for all control types Press MODE/RET...
  • Page 3 CT240/CT241) or any other remote control system. Refer to the power base installation instructions for Econo input wiring. When a signal is received through this input, the FLP12 thermostat automatically switches from normal operating mode to the Vacation mode. In this mode, the suitcase icon flashes and all buttons are locked.
  • Page 4 Limited Warranty shall apply to the new owner, provided instructions of FLEXTHERM, shall be free of defects, in either materials of workmanship as described in this document. the new owner has proof, satisfactory to FLEXTHERM, of the date of first purchase of the Product. COVERAGE PERIOD: This Limited Warranty becomes effective on the FLEXTHERM Canada Inc.