Danfoss RET2001 Digital Thermostat
LCD Overview
Buttons 
Power ON/OFF
Turn the thermostat ON or OFF (Standby) by pressing
.
Setting the Temperature
- Press < or > at any time to change the desired temperature value. SET is shown in the display.
- When releasing < or >, the display returns to showing the actual temperature.
- The adjustment step is 0.5 °C.
Select Away Mode
- Press M to enter Away mode and
will be displayed. - Away mode temperature can be set in parameter settings, P07.
- Press M again to exit Away mode.
Frost Protection Temperature and Reset
- You can switch the thermostat OFF (Standby) by alternately pressing In OFF (Standby) mode, the thermostat is set to a Frost Protection temperature setting and will switch On only if the measured temperature falls below this temperature (5 °C by default).
- The frost protects icon and current temperature will be displayed.
- At this point, if the button is pressed for 10 seconds Continuously then the thermostat will be reset.
Set Control Parameters
- Press M button for 6 seconds to enter the parameter setting mode. Press M for parameter selection and set the parameter range via < or >. Complete all adjustments.
- To exit press the upper part of setting ring or wait 20 secs for the automatic exit.
The digits indicate the set value as follows:
| No. | Parameter settings | Settings range | Default |
| P02 | Heat control mode | 01: On/off load compensation 02: On/off standard | 01 |
| P04 | Temperature limit high | Between low (P05) and 35 °C | 35 °C |
| P05 | Temperature limit low | Between 5 °C and high (P04) | 5 °C |
| P06 | Frost protect temperature | Between 5 °C and 15 °C | 5 °C |
| P07 | Away mode temperature | Between low (P05) and high (P04) | 18 °C |
| P10 | RF Pairing (RET2001RF only) | 00: RF pairing mode off 01: RF pairing mode on | 00 |
Error Messages
| E1 | Sensor failure |
| EE | EEPROM failure |
| Lo | Measured temperature below 0 °C |
| Hi | Measured temperature above 50 °C |
| E3 | RF Pairing failed |
| E4 | RF Signal lost |
Danfoss A/S · Heating · Haarupvaenget 11 · DK-8600 Silkeborg
Telephone: +45 7488 8000 ·
Email: [email protected] · heating.danfoss.com
Danfoss can accept no responsibility for possible errors in catalogs, brochures, and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequent changes being necessary for specifications already agreed upon. All trademarks in this material are the property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
OTHER MANUAL:
Danfoss RET2001U Thermostat User Guide
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