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© 2009 Danfoss Inc.

© 2009 Danfoss Inc.

Non-Programmable 088L5133  

 English

Press the 

Down

 button to return to the original temperature set-

ting. If the test fails, check the heating cable and thermostat. 
If during normal operation the GFCI trips without the 

TEST

 button 

being pressed, there could be a ground fault! To check whether it 
is a ground fault or nuisance tripping, press 

Standby/Reset

. If this 

causes the red light to go off and stay off, it was nuisance tripping 
and the system is operating correctly. If this does not occur, there 
is a ground fault! Contact your electrical installer.

Settings

The thermostat has an intuitive menu, allowing it to be easily set. 
Press 

OK

 to access the following options: 

FLOOR TEMP Displays actual floor 

temperature.

SCALE HIGH

Allows you to set the highest temperature to 
which the thermostat can be adjusted. 
Press 

OK

 and change the temperature with 

the 

UP

 or 

DOWN

 button. Confirm with 

OK

.

SCALE LOW

Allows you to set the lowest temperature to 
which the thermostat can be adjusted. 
Press 

OK

 and change the temperature with 

the 

UP

 or 

DOWN

 button. Confirm with 

OK

.

C ° / F °

Allows °C (Celsius) or °F (Fahrenheit) to be 
selected as the temperature unit.    
Press 

OK

 and change the temperature unit 

with the 

UP

 or 

DOWN

 button. Confirm with 

OK

.

OFFSET 
TEMP

Allows the difference in temperature between 
the thermostat and a room thermometer to 
be set.
Press 

OK

. Press the 

UP

 or 

DOWN

 button 

to set the offset temperature (in steps of 
0.2°F/0.1°C). Confirm with 

OK

APPLICATION Allows you to select FLOOR SENSOR or 

REGULATOR.

FLOOR SENSOR: A floor sensor is used. 
Only floor temperature is controlled. (Factory 
default)

REGULATOR: The thermostat functions as a 
simple regulator and no sensors are used.

Press 

OK

. Press the 

UP

 or 

DOWN

 button 

to select FLOOR SENSOR or 
REGULATOR. Confirm with 

OK

EXIT

Exits the menu. 
Press 

OK

 to return to the initial display.

Standby

The thermostat has a standby function, which turns off the thermo-
stat and display. 
Press and hold the Standby button for 2 seconds. The display 
shows 

OFF

 and then turns off. 

To turn the thermostat on again, simply press the Standby button.
 

Error messages

E0 = Internal failure. Replace thermostat.
E1 = Air sensor defective or short-circuited. Replace thermostat.
E2 = Floor sensor defective or short-circuited. Check floor sensor.

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