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View/Change temperature setting mode

•  In the home screen in Auto/Comfort/Economy/Off mode, press   or   o enter View/Change 

temperature settings.

•  The LCD will show the current temperature setting with flashing numbers and the SET icon is 

displayed.

•  Press   or   again to increase or decrease the set temperature in 0.5°C steps.
•  Press and Hold   or   for 2 seconds to enter fast advance in 1.0°C steps.
•  In Auto/Comfort/Economy mode, the temperature can be set from 5°C to 30°C. In OFF mode, the 

temperature is set at 5°C and cannot be changed.

•  During changing the set temperature, only  ,   and 

Set

 have functionality. 

•  If the 

Set

 key is pressed or no further keys have been pressed after 5 seconds, the setting is saved 

and it will return to the home screen automatically.

Change Operation Mode

The thermostat can operate in four different modes: AUTO, COMF, ECON or OFF. The default mode 
is AUTO.

1) 

COMF

 mode

•  Press  

  anytime in other modes to enter COMF mode. The screen displays  

  and the 

setting flashes for 5 seconds. When the temperature flashes, the setting can be changed (default 
21°C) by using ᴧ or ᴧ in increments of 0.5°C. Press and hold the buttons, the setting will change 
continuously in increments of 1.0°C.

•  Wait 5 seconds to confirm the temperature. Next time the thermostat is in COMF Mode, this 

setting will be remembered.

•  Anytime during the COMF mode press  

, it will go back to the AUTO (automatic) mode. 

Symbol on the LCD will be off, 

 icon will be displayed.

2) 

ECON

 mode

•  Press 

 anytime to change into ECON mode. 

will be displayed on the LCD. Change the setting 

(default 16°C) the same as in COMF mode. Anytime during the ECON mode, press 

 to return to 

AUTO (automatic) mode

3) 

AUTO

 mode

•  Automatic mode sets the thermostat to follow the temperature program. 

 is displayed on 

LCD. Change the setting the same as in COMF mode.

4) 

OFF

 mode

•  Off mode sets the thermostat to maintain a minimum temperature of 5°C (default) that acts as a 

frost protection measure. This value cannot be changed. 

•  In AUTO / COMF / ECON mode, pressing 

ON/OFF

 will change to OFF mode.

•  In OFF mode, press 

ON/OFF

 again to revert to the previous mode.

•  In OFF mode, press 

 to change into COMF mode. Press again to change to Auto mode.

•  In OFF mode, press 

 to change into ECON mode. Press again to change to Auto mode.

Temporary Override Mode

•  During AUTO mode, the programmed temperature can be adjusted manually by pressing the 

 or   buttons. The setting will flash for 5 seconds, then return to the home screen.

•  This temperature override is cancelled at the next programmed temperature change.
•  During Temporary Override mode, the program number is not displayed.
•  Temporary Override mode remains active until the clock or program settings are adjusted, COMF/

ECON/OFF mode is activated, or the next program time is reached.

Summary of Contents for TPST501

Page 1: ...ion where it may be subjected to direct sunlight The electrical connections to the TPST501 are made to the standard backplate supplied This simplifies installation as no connections are made to the controller itself Connection details are shown below no Earth connection is required for the correct and safe operation of the TPST501 but a parking terminal is provided to connect an Earth wire if one ...

Page 2: ...ST501 onto the backplate without the mains supply to the system being isolated Jumper Settings Changes to the jumper settings should only be made by the Engineer carrying out the installation or other qualified person Jumpers Description Span 3x1 pins jumper for 0 5 C or 1 0 C factory default setting selection It is used to define the system to run at 0 5 C or 1 0 C difference to the set temperatu...

Page 3: ...nnel is turned on for heating 6 Low batt indicator Indicates battery replacement is required 7 Auto Comf Econ Off mode indicator Indicates current mode Auto Comfort Economy Off 8 Set icon Indicates unit in setting mode 9 Program icon Indicates unit in programming mode Both SET and PROG are sown at the same time as SET PROG 10 Snowflake icon Indicates when unit is in OFF mode Initial Power Up After...

Page 4: ...C 2 Time 08 00 Time 10 00 Temp 18 C Temp 21 C 3 Time 12 00 Time 12 00 Temp 21 C Temp 21 C 4 Time 14 00 Time 14 00 Temp 18 C Temp 21 C 5 Time 18 00 Time 18 00 Temp 21 C Temp 21 C 6 Time 22 30 Time 23 00 Temp 16 C Temp 16 C Day Time Setting To set the day press D repeatedly to step through Press and hold the key 2 seconds the Day of the Week will change continuously To set the hour press H repeatedl...

Page 5: ...OMF Mode this setting will be remembered Anytime during the COMF mode press it will go back to the AUTO automatic mode Symbol on the LCD will be off icon will be displayed 2 ECON mode Press anytime to change into ECON mode will be displayed on the LCD Change the setting default 16 C the same as in COMF mode Anytime during the ECON mode press to return to AUTO automatic mode 3 AUTO mode Automatic m...

Page 6: ...am 2 and the Hour will flash for 10 seconds to allow you to set repeat steps 3 to 5 above 7 After Program 6 is set the next Day will flash as in step 1 8 Repeat step 1 to 6 to set the rest days Note During steps 1 8 above only or Select and Set have functionality During steps 1 8 above if there is no key press within 10 seconds the unit will store the current setting and return to AUTO mode Chrono...

Page 7: ...ample New Program 1 Time 06 30am Setpoint Temp 21 C 2 Time 7 00am Setpoint Temp 18 C 3 Time 7 00am Setpoint Temp 23 C 4 Time 7 00am Setpoint Temp 21 C 5 Time 7 00am Setpoint Temp 19 C 6 Time 10 30pm Setpoint Temp 16 C Installer Setting Mode There is one setting for installer Offset from 3 0 C to 3 0 C 1 Press and hold ON OFF over 2 seconds the unit is in Offset selection LCD will display OFS and s...

Page 8: ...tery occurs the backlight will not illuminate Battery Cut off Handling When the batteries reach cut off voltage 2 1V the LCD will turn off After battery cut off occurs the thermostat will enter a cut off state until new batteries have been fitted BOSS is a registered trademark of the Travis Perkins Group Registered Office Travis Perkins plc Lodge Way House Lodge Way Harlestone Road Northampton NN5...

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