Baxi 720644701 Installation & User's Instructions

AUTO 1 7 6 5 4 3 2 MODE MENU 24 21 18 15 12 3 6 9 °C Baxi Heating UK Ltd 2011 c Please keep these instructions in a safe place. If you move house, please hand them over to the next occupier. Part No. 720644701 7 day Wired Digital Programmer & Room Sensor Part No. 720644801 7 day Wireless Digital Programmer & Room Sensor Part No. 720644901 24hr Wireless Digital Programmer & Room Sensor 720644801 shown B

4 4.0 Installation & Wiring 5 5.0 Wireless Room Unit 7 6.0 Manual Synchronization 8 of Wireless Units 7.0 Standby & Operating Mode 9 8.0 Central Heating & Domestic Hot 10 Water activation 9.0 Temperature Settings 11 10.0 Setting the Time & Day 12 11.0 Setting Central Heating & Domestic 13 Hot Water 12.0 Programmer & Room Sensor 14 Parameter Codes 13.0 Error Codes 15 Page Baxi Heating UK Ltd 2011 c Programmer & Room Sensor - 7 day Wired Programmer & Room Sensor - 7 day Wireless Programmer & Room Sensor - 24hr Wireless Receiver Batteries (AA/LR6) Fixing Screws Rawlplugs Instructions 720644701 720644801 720644901 1 1 1 1 1 1 1 1 - 4 2 2 4 2 4 4 2 - - - - - - - Kit contents Table 1. Kit contents

2.0 Introduction 3 Fig. 2 Receiver Fig. 1 Programmer & Room Sensor (720644801 shown) AUTO 1 7 6 5 4 3 2 MODE MENU 24 21 18 15 12 3 6 9 °C Boiler Unit AUTO 1 7 6 5 4 3 2 MODE MENU 24 21 18 15 12 3 6 9 °C Boiler Unit Receiver 1. Specification of Units. 720644701 7 day Wired (for use with Neta-tec & Duo-tec) is wired directly to your boiler unit (Fig. 3). 720644801 7 Day Wireless & 720644901 24h Wireless (for use with Neta-tec, Duo-tec & Megaflo Compact) are operated remotely via radio frequency wireless transmis- sion to a Radio Frequency Receiver fitted close to the boiler unit (Fig. 4). 2. The sensor constantly monitors the temperature of the room in which it is installed. It can be operated in four temperature modes, ‘Hi’ (or ‘COMFORT’), ‘Lo’ (or ‘REDUCED’), ‘Frost Protection’, or left in ‘Automatic’ (AUTO) to operate as programmed. 3. Depending on the settings, the boiler will run the ‘Hi’ COMFORT settings during a heating demand and the ‘Lo’ REDUCED setting for overnight periods or times when the property is left unoccupied. 1. The units require 2 AA type alkaline batteries (Supplied). Installation of the batteries is shown in Fig. 12. 2. If the battery symbol is seen flashing in the digital display (Fig. 5) the batteries need replacing. See Fig. 12 for details. 3. The batteries have a lifespan of approximately 2 years. Batteries should be changed within this timescale as a precaution. 4. The Clock Function will need to be checked every time the batteries are replaced. Baxi Heating UK Ltd 2011 c NOTE: If the batteries are left flat the unit will only retain its settings for a maximum of one week. NOTE: If the batteries are flat the boiler will return to a default setting of Boiler ON. AUTO 1 7 6 5 4 3 2 MODE MENU 24 21 18 15 12 3 6 9 °C Fig. 3 Programmer & Room Sensor - Wired version Fig. 4 Programmer & Room Sensor - Wireless version Insulation Class II IPX Rating IP44 Operating Temperature -5°C to 50°C Transmission Frequency 868MHz (Wireless only) 2.3 Technical Specifications

3.0 Programmer & Room Sensor Functions 4 Baxi Heating UK Ltd 2011 c AUTO 1 7 6 5 4 3 2 MODE MENU 24 21 18 15 12 3 6 9 °C Current Time Measured Temperature Battery life (Replace if flashing) Programme and Time Segments Current Day (1 = Monday) (7 day version only) Menu Button Selector Button Mode Button Burner ‘ON’ Indicator Communication (Wireless only) Central Heating Domestic Hot Water REDUCED Mode COMFORT Mode Automatic Mode Manual Mode STANDBY MODE MENU 1 1 Press the MENU Button Day of the week 1= MON (7 day only) Day of the week selected (7 day only) Standby selected Central Heating (flashing = selected) Signal Strength (flashing = no signal) Boiler runs using User defined times Boiler in REDUCED Mode Boiler in COMFORT Mode Press the MODE Button Rotate the Selector Button Press the Selector Button Symbol Meaning Symbol Meaning Symbol Meaning °C AUTO Time (flashing = selected) Temperature (flashing = selected) Domestic Hot Water (flashing = selected) Fig 5. Programmer & Room Sensor front view with functions Table 2 Programmer & Room Sensor symbols & meanings

4.0 Installation & Wiring 720644701 7 day Wired 1. This Programmer & Room Sensor will take full control of the boiler once fitted. All the boiler functions are transferred to the Programmer & Room Sensor except Chimney, Commissioning and the Combustion Adjustment functions (Refer to the Boiler Instruction Manual). 2. The boiler must be fully commissioned before fitting this Programmer & Room Sensor. NOTE: Communication between the boiler and the Programmer & Room Sensor can take up to 2 minutes to establish. During this time, the boiler may attempt to fire prior to communication being established. 3. If necessary, control can be transferred back to the boiler. Either remove the unit from its cradle, or remove the plug from the Receiver, then turn the power to the boiler off and back on. NOTE: The yellow link wire across terminals 1 & 2 on the Boiler terminal block ‘M1’ must be removed when fitting this Low Voltage control system. Fig. 6. 1. Power down the boiler. 2. Remove the backplate from the unit by pressing down on the rear tab and easing apart. Fig. 12. 3. Identify a suitable site to locate the Programmer & Room Sensor. See Fig. 8 for guidance on where to locate the unit. 4. Use a suitable grade of wire when connecting the Programmer & Room Sensor to the boiler. A specification of 2 x 0.75mm with a maximum length of 50m should be used. 4. Pass the wires through the access slots in the backplate and wire the terminals as shown in Fig. 6. 5. Screw the backplate to the wall using the fixings provided and reattach the Programmer & Room Sensor. 6. Turn the power back on. 5 Baxi Heating UK Ltd 2011 c 1 2 3 Programmer & Room Sensor Backplate Min. 200 mm MODE MENU 24 21 18 15 12 3 6 9 °C MODE MENU 24 21 18 15 12 3 6 9 °C MODE MENU 24 21 18 15 12 3 6 9 °C MODE MENU 24 21 18 15 12 3 6 9 °C 1500mm X X Fig 6. Wiring details for 7 day Wired 720644701 Fig. 7 Connector Pins Fig. 8. Location positions 2 Rear Tab Boiler Wiring Terminal M2 Low Voltage Terminal Block Boiler Mains Voltage Terminal Block M1 1 2 ! IMPORTANT When fitting Low Voltage Controls remove the Yellow Link Wire from the Boiler Terminal Block M1

NOTE: The yellow link wire across terminals 1 & 2 on the Boiler terminal block ‘M1’ must be removed when fitting this Low Voltage control system. Fig. 9. 1. The Receiver should be wired to the boiler as shown in Fig 9. 2. Turn the power to the boiler off. 3. Remove the Receiver backplate by carefully prising it away from the body. Fig. 10. 4. Route the wires through the rear of the backplate panel. If a surface mount is required it will be necessary to break off the appropriate tabs to give the wire access. 5. Connect the wires to the ‘OT’ connection on the terminal block. Fig. 9. Note this is removable for ease of wiring. 6. Connect the other end of the wire to the terminals on the boiler. Please refer to the boiler manual for wiring details. 7. Fix the Receiver to the wall using the fixings provided and refit the front cover ensuring the correct orientation. Fig 11. 8. Fit the batteries to the Programmer & Room Sensor. Fig 12. 6 Baxi Heating UK Ltd 2011 c OT OT Fig. 9. Receiver Backplate 4.3 Connecting 720644801 7 day Wireless & 720644901 24h Wireless. Fig. 12. Accessing batteries Fig 11. Completed Receiver 1. Press Securing Tab. 1. Press Securing Tab. 2. Ease away from Backplate. 2. Ease Backplate away. Fig 10. Receiver & Access Tab 2 x AA/LR6 Batteries (Supplied) Boiler Wiring Terminal M2 Low Voltage Terminal Block Boiler Mains Voltage Terminal Block M1 1 2 ! IMPORTANT When fitting Low Voltage Controls remove the Yellow Link Wire from the Boiler Terminal Block M1

5.0 Wireless Room Unit 7 1. The units are pre-synced so should communicate with each other when powered up. NOTE: Communication between the boiler and the Programmer & Room Sensor can take up to 2 minutes to establish. During this time, the boiler may attempt to fire prior to communication being established. 2. If Error codes 83 or 85 are seen during commissioning, there is a communication problem. 3. Error 83 is due to the Receiver not communicating with the boiler. Check the wiring between the Receiver and boiler. Fig. 9 4. Error 85 is due to the Programmer & Room Sensor not communicating with the Receiver. The Programmer & Room Sensor is either out of range or has not synchronized correctly. Check the unit’s location (Fig 13) or proceed to the Manual Sync process in Section 6.0 AUTO 1 7 6 5 4 3 2 MODE MENU 24 21 18 15 12 3 6 9 °C Fig. 14 Remote unit Error Codes Fig. 15 Signal Strength Test Fig. 13 Maximum permitted separation Boiler Unit Receiver Error 85 Error 83 5. If Error 85 is seen after commissioning, check: a) The Programmer and Room Sensor and the Receiver are within range of each other. See Fig. 13 and Section 5.2 b) The units are synchronized correctly. Section 6.1. c) The wiring is correct between the Receiver and boiler. Fig. 9 6. The maximum distance between the Receiver and the Programmer & Room Sensor will depend on the layout of the house. For a typical house, a guideline of 3 floors or walls can be used, as shown in Fig 13. MODE MENU 24 21 18 15 12 3 6 9 °C MODE MENU 24 21 18 15 12 3 6 9 °C MODE MENU 24 21 18 15 12 3 6 9 °C A B C X Before mounting the Programmer & Room Sensor to the wall, perform the following test to determine the signal strength. Fig 15. 1. Press and hold the Selector Button for approximately 6 seconds and HC 1 will be seen in the display. 2. Rotate the Selector Button until ‘tSt OFF’ is seen in the display. 3. Press the Selector Button and OFF will flash. Rotate the Selector Button until ON is seen. 4. Press the Selector Button to start the signal strength test. The test may last for up to 8 minutes. During this time, numbers ranging from 0 to 4 are displayed. ‘0’ indicates no signal available and ‘4’ shows excellent signal strength Fig 15. Baxi recommends locating the unit to give a signal strength of 3 or 4. If the signal is low, move the unit to a more suitable location and retest. 5. Press the Selector Button at any time to interrupt the test or press MENU to escape once the test has finished. 6. If the Manual Sync. process needs to be carried out see Section 6.0. 5.2 Test for Signal Strength Baxi Heating UK Ltd 2011 c Hold for 6 seconds HC 1 tSt OFF tSt OFF tSt ON 0 No Signal 1 Weak Signal 2 Poor Signal 3 Good Signal 4 Excellent Signal Up to 8 minutes test result Retest OK Example A: 1 floor + 2 walls. Example B: 2 floors + 1 wall. Example C: 3 floors + no walls.

& 720644901 24h Wireless 6.0 Manual Sync. Function The Programmer & Room Sensor and the Receiver can be synchronized using the method shown in Fig. 18 as follows: 1. Start by setting up the Programmer & Room Sensor. Press and hold the Selector Button (Fig. 16) for approx. 6 seconds. ‘HC 1’ will be seen on the display. 2. Rotate the Selector Button until ‘SnC OFF’ is seen in the display. 3. Press the Selector Button and ‘OFF’ will flash. This display will only remain on the screen for approximately 60 seconds. 4. Now set up the Receiver. LED ‘L1’ will be flashing. Fig. 18. One of the following conditions will be seen. 1 One flash every 2 secs Boiler and Controller Synchronized. 2 Two flashes every 2 secs Communication error 3 Three flashes every 2 secs No communication yet 4 Flash for 1sec NA for Sync 5 1 sec flash every 1 sec Synchronization initialisation See Fig. 27 for detailed description 5. If one flash is seen every 2 seconds, the boiler and Programmer & Room Sensor are already synchronized. Return to the Programmer & Room Sensor and press Menu twice to exit the Synchronization menu. 8 Baxi Heating UK Ltd 2011 c AUTO 1 7 6 5 4 3 2 MODE MENU 24 21 18 15 12 3 6 9 °C Hold for 6 seconds Fig. 16. Programmer & Room Sensor Selector Button Fig. 18. Manual Sync Process Diagram Fig. 17. Receiver LED Display & Button L1 L2 L1 L2 HC 1 SnC OFF SnC End Err L1 Rapid Flash Press & hold until slow flash L1 Slow Flash SnC ON OFF SnC OFF SnC OFF Return to Controller Go to Receiver Unit Reposition & Retry 6. If L1 shows 3 flashes every 2 seconds the units are not synchronized. Press and hold the Receiver Button until the rapid flash at L1 changes to a slow flash. 7. Return to the Programmer & Room Sensor where ‘SnC OFF’ will be flashing. Rotate the Selector Button until ‘SnC ON’ is seen. Press the Selector Button and the display shows 4, 3, 2, 1 counting down. When this process is complete, the unit will display ‘End’ if synchronization has been successful. Press the Selector Button to return to the ‘SnC OFF’ screen then press MENU to escape. 8. If Error 85 is still displayed, the unit hasn’t synchronized correctly. Return to the beginning and repeat the process. . . . 4, 3, 2, 1 MENU

9 Baxi Heating UK Ltd 2011 c 7.1 Standby and Operating modes 1. The controller can be set to either Standby Mode or Operating Mode. In Standby, both the Central Heating and Domestic Hot Water functions are switched OFF. 2. In Standby the Boiler Frost Protection function is still activated and will fire the boiler if the temperature in the boiler drops below 4°C. 3. In Operating Mode, the boiler will respond to any preset Central Heating or Domestic Hot Water demand. 4. The screen display shows the current settings. Fig 19 shows the unit in Standby Mode. Fig 20 shows Operating Mode. 1. To change the unit’s settings, follow the flow diagram shown in Fig 21. 2. Press the Mode button and the Standby symbol will flash and ‘OFF’ is shown in the main display. The Central Heating and Domestic Hot Water symbols can also be seen. 3. Press the Selector Button once and ‘OFF’ will flash. The Central Heating and Domestic Hot Water symbols disappear. 4. Rotate the Selector Button clockwise until ‘On’ is seen in the display. 5. Press the Selector Button once to confirm the selection and then ‘Menu’ to return to the main screen. If Menu isn’t pressed the display will return to the Main screen after approximately 2 seconds. The unit is now in ‘Operating Mode’. Fig 21. Standby & Operating Mode Diagram MODE MENU To Escape (or wait 2 secs) Confirm Confirm AUTO 1 7 6 5 4 3 2 MODE MENU °C Fig 19. Unit in Standby Mode. AUTO 1 7 6 5 4 3 2 MODE MENU °C Fig 20. Standby turned off. 7.2 Changing Standby and Operating Mode settings AUTO 1 7 6 5 4 3 2 AUTO 1 7 6 5 4 3 2 AUTO 1 7 6 5 4 3 2 AUTO 1 7 6 5 4 3 2 Table 3. Display Icons AUTO OFF Heating or Hot Water set to OFF COMFORT room temperature REDUCED room temperature Domestic Hot Water setting Hourly Central Heating programme Hourly Domestic Hot Water programme Time Band Time Band In AUTO, the boiler will heat the property to the temperature set on the i-THINK Controller during the programmed timed Heating periods In REDUCED mode, the boiler will maintain a minimum temperature in the property. If at any time, day or night, the temperature falls below this value the boiler will fire until the temperature is achieved. In COMFORT, the boiler will constantly heat the property to the temperature set on the i-THINK Controller. NOTE: This will continue until the boiler is taken out of COMFORT mode.

10 Baxi Heating UK Ltd 2011 c 1. Press the MODE button and rotate the Selector Button until the flashing Central Heating symbol is seen in the display. Fig. 22. 2. Press the Selector Button once to confirm the setting and the OFF will flash. 3. Rotate the Selector Button to scroll through the options available. In Central Heating, these are AUTO, REDUCED, COMFORT and OFF. Press the Selector Button to confirm the setting. 4. Press MENU to escape, or wait 3 seconds and the unit will return automatically to the main display screen. NOTE: A delay during this process will cause the unit to revert back to the main screen. If this happens the process must be restarted. 1. The Room Temperature can be increased or decreased during a heating period by rotating the Selector Button to give the required temperature. Press the Selector Button to confirm the new setting. 2. The set temperature will return to the ‘Comfort’ mode value at the next heating demand period. 1. For Combi boilers it is recommended that the Domestic Hot Water setting is left in the ‘ON’ position. If it is necessary to alter the setting follow the process shown in Fig 22. 1. If the symbol ‘Sd’ appears in the display please contact heateam as your boiler may require servicing. The contact telephone number is shown on the back page. 8.1 Setting Central Heating to ON 8.3 Setting Domestic Hot Water to ON 8.4 Service Warning MODE MODE AUTO REDUCED COMFORT OFF MENU To Escape (or wait 3s) MENU To Escape (or wait 3s) Confirm Confirm OFF OFF ON ECO OFF Confirm Confirm 8.2 Manual Override of Room Temperature AUTO 1 7 6 5 4 3 2 24 21 18 15 12 3 6 9 °C Fig 23. Typical Operating Modes. 7 day Wireless 7 day Wired 24h Wireless AUTO 1 7 6 5 4 3 2 24 21 18 15 12 3 6 9 °C AUTO 1 7 6 5 4 3 2 24 21 18 15 12 3 6 9 °C Fig 22. Central Heating & Domestic Hot Water activation

c 1. To set the Room Temperature, press the MENU button and SC ON will appear in the display with the current Room Comfort Set Point shown. 2. Press the Selector Button and the Comfort Set Point will flash. This set point can be adjusted up or down by rotating the Selector Button. 3. Press the Selector Button again to confirm the set point and then press MENU to return to the main display screen. The Comfort Set Point is now confirmed. The Comfort Set Point can be increased or decreased during a heating period by rotating the Selector Button to give the required temperature. Press the Selector Button to confirm the new setting. The set temperature will return to the previous COMFORT mode value at the next heating demand period. 1. To adjust the REDUCED set point, press the MENU button and rotate the Selector Button until ‘Sr Ed’ appears in the display. 2. Press the Selector Button to access the menu. The current set point will be seen flashing. The set point can be adjusted up or down by rotating the Selector Button. 3. Press the Selector Button again to confirm the set point and then press MENU to return to the main display screen. The REDUCED temperature is now confirmed. 1. To set the Domestic Hot Water temperature, press the MENU button and rotate the Selector Button until ‘Sd HU’ appears in the display. 2. Press the Selector Button and the current temperature set point will flash. The temperature can be adjusted up or down by rotating the Selector Button. 3. Press the Selector Button again to confirm the temperature and then press MENU to return to the main display screen. The Domestic Hot Water temperature is now confirmed. 1. To adjust the Outdoor Sensor value press and hold the Selector Button for approximately 6 seconds to access the parameter menu. Rotate the Selector Button until ‘otC’ is seen in the display and press the Selector Button to access. 2. Set the required temperature compensation value from the graph (Fig. 25) by rotating the Selector Button and pressing to confirm. Press ‘MENU’ until the main screen is displayed. 9.1 Setting the Room Temperature (Comfort) 9.3 Setting the REDUCED Temperature 9.4 Setting the Domestic Hot Water 9.5 Setting the Outdoor Sensor Curve 9.2 Manual Override of COMFORT setting 9.0 Temperature Settings Fig 24. Temperature adjustment diagram Fig 25. Outdoor Sensor Curve Graph MENU MENU SC ON Sd HU Sr Ed SC ON Sd HU Sr Ed + °C - °C °C °C °C 30 35 40 45 50 55 60 65 70 75 80 85 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 1.5 0 15 20 10 5 0 -5 Outdoor Temperature Example: For a minimum outdoor temperature of -10°C and a required flow temperature of 80°C, the otC value should be set to 3.0. For further details please see Outdoor Sensor Kit - Part No. 720103001 Default Value otC Menu Values Boiler Flow Temperature -10 -15 -20 NOTE: This function can not be set or displayed from the boiler front panel when the Programmer and Room Sensor Controller is fitted.

10.1 To Set the Time. 10.2 To Set the Day (720644701 7 day Wired & 720644801 7 day Wireless only). 10.0 Setting the Time & Day 12 Baxi Heating UK Ltd 2011 c 1. From the main display screen press MENU and rotate the Selector Button until the clock is displayed. Fig. 26. 2. Press the Selector Button once and the hour will flash. Rotate the Selector Button to increase or decrease the time. Press the Selector Button once to confirm the hour setting. The minutes display will now flash. 3. Rotate the Selector Button to set the minutes and press the Selector Button once to confirm. The time is now set. Press MENU until the main screen is displayed. 1. Set the Time as described above. Once the Time is confirmed by pressing the Selector Button, the day symbols on the right hand side of the screen will flash. 2. Rotate the Selector Button set the day. Monday = 1, Tuesday = 2 etc. The current day is shown in a small circle. Press the Selector Button to confirm. 3. The correct time and day should now be shown in the display. Press MENU once to return to the main display screen. Confirm Confirm Confirm MENU + hrs - hrs + min - min + day - day Confirm MENU °C 1 6 5 4 3 2 7 1 6 5 4 3 2 7 1 6 5 4 3 2 7 1 6 5 4 3 2 7 NOTE: The clock will not update automatically so will require manual adjustment. 7 Day Version Only 7 day version only Fig. 26. Setting the Time & Day 1 = Monday 2 = Tuesday 3 = Wednesday 4 = Thursday 5 = Friday 6 = Saturday 7 = Sunday

13 Baxi Heating UK Ltd 2011 c 1. Press the MENU button and rotate the Selector Button until ‘PCH’ is seen in the screen. Fig. 27. Press the Selector Button once. 7-day version only: Press the Selector Button once and ‘Day 1’ (Monday) will be seen flashing. The display can be set to either 7 individual days, 5 weekdays and 2 weekend, or 7 days identical. The 24h version does not have ‘Day’ function displayed. 2. To set the day sequence, rotate the Selector Button until the required day is displayed. Press the Selector Button to confirm. 3. The screen displays the time and the letters ‘Pr’ flashing. Press the Selector Button again and ‘On 1’ flashes. (Pr = current setting, Pr1, Pr 2 & Pr 3 are presets). 4. Press the Selector Button again and the time flashes. The first Timed ‘On’ period can now be set. Rotate the Selector Button to set the desired Central Heating start time. 5. Press the Selector Button to confirm and the first timed ‘Off’ period flashes. Use the Selector Button to set the required off period. Press the Selector Button once to confirm. 6. Repeat the above process for ‘On 2’, ‘Off 2’, ‘On 3’ and ‘Off 3’ time periods. If only 2 Heating periods are required set ‘On 2’ and ‘Off 2’ to the same time (e.g. 12:00). 7. After ‘Off 3’ has been set the screen will show the ‘On 1’ time flashing again. If Programming is complete, press ‘MENU’ repeatedly to return to the main display screen. 1. Press MENU and rotate Selector Button until ‘PdHU’ is displayed. Fig. 27. Press the Selector Button to confirm and repeat the sequence as described above. 11.1 Setting the Central Heating 11.2 Setting the Domestic Hot Water 1 2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 3 4 5 6 7 MENU 00:00 Pr 00:00 On 1 7 day 24h Preset Programmes Pr1 Pr2 Pr3 OFF OFF OFF On 2 On 3 00:00 On 1 00:00 OFF 00:00 On 3 00:00 OFF 00:00 On 2 00:00 OFF PCH PdHU Fig. 27. Setting Central Heating & Domestic Hot Water

12.0 Parameter Codes 14 Baxi Heating UK Ltd 2011 c HC Assigns the Programmer & Room Sensor to heating circuit. .Ao Sets the Programmer & Room Sensor as Master (CEn). rtE Enables the USER to adjust the reduced room temperature setting dh Enables the USER to adjust the DHW temperature and hourly programming Sets the DHW mode: 24h: DHW always active rEL CHP: DHW is enabled according to the CH hourly programme DhP: DHW is enabled according to the DHW hourly programme oFS Sets the offset of the room sensor. Used to correct the temperature value read by the sensor if this differs from the actual temperature. Un Selects the temperature unit of measurement (°C or °F) SoFt Displays the software version oSt Not used oSp Not used tLr Not used Enables / Disables room anti-freeze function (from +4° C to reduced room temperature) ICE OFF = disabled 4°C = settable otC Sets the kt curve for external weather sensor 720103001 (0.1 – 9.0). (See Section 9.5) rtS Enables (ON) / Disables (OFF) the room sensor. Mod. Enables (ON) / Disables (OFF) room temperature modulation. ULt Sets the maximum CH flow temperature (Max CH) TSP Accesses the “Pxx” board parameters menu Snc Synchronization of Programmer & Room Sensor (720644801 & 720644901) with the boiler. Refer to Sections 5 and 6 of this manual TSt Radio transmission test (WIRELESS only). The function lasts 8 minutes or when the Selector Button is pressed. The display shows the numbers 1 to 4 (1=25% - 4=100%) End To return to the main screen. Display Description Default 1 CEn Enabled Read only Enabled 0 °C N/A N/A N/A 4°C 1.5 ON ON 85°C - - - Combi 24h 1. To access the Menu, press and hold the Selector Button for approximately 6 seconds. The parameters can be accessed by rotating the Selector Button. * * Adjustment is required for Low Temperature or Underfloor heating systems. Table 4. Parameter codes

1. Some error codes can be reset. If an error code is seen in the display use the reset procedure to try and remove the fault. Fig. 29. 2. Press the Selector Button once and rotate immediately until ‘rSt’ is shown in the display. 3. Press the Selector Button again and the error should reset. If the error doesn’t reset, consult the boiler manual for further information. 1. Press the Selector Button once and ‘000’ will be displayed. 2. Rotate the Selector Button until ‘015’ is seen is the display. 3. Press the Selector Button once and ‘Service Due’ will clear. Fig 30. NOTE: Resetting this function without completing the required service will invalidate your warranty. 1. If necessary, control can be transferred back to the boiler. Either remove the unit from its cradle, or remove the plug from the Receiver, then turn the power to the boiler off and back on. 15 Baxi Heating UK Ltd 2011 c 2s 2s L1 Flash L1 Flash L1 Flash Normal Operation Wired - No Communication between Boiler & Transmitter L1 Flash x 2 L1 Flash x 2 L1 Flash x 2 2s 2s Wireless - No Communication between Room Unit & Transmitter L1 Flash x 3 L1 Flash x 3 L1 Flash x 3 2s 2s Initialization Phase between Transmitter & Boiler L1 Flash L1 Flash Parameter Change L2 Flash 2s 1s Receiver L1 L2 1s 1s 1s 1s Programmer & Room Sensor Error Codes (See Sec. 5.1) 85 Error between Programmer & Room Sensor & Receiver 83 Error between Boiler & Receiver 13.1 Error Codes 13.2 Resetting the ‘sd’ - Service Due Code 13.3 Boiler Control Gas Valve Connection Cable Gas Valve Fault Central Heating NTC Fault Flue NTC Fault Central Heating Return NTCFault Pre-circulation Fault Safety Thermostat Operated Primary System Water Pressure Too High Primary System Water Pressure Too Low Circulation Fault (Primary) Flame Failure Flue NTC Operated Interruption Of Gas Supply or Flame Failure Elapsed Time - Gas Valve Open Without Gas Interruption Of Gas Supply (Internal Error) Flow/Return Sensor Temperature Test Fan or Fan Wiring Fault Circulation Fault (Dry Fire) Hot Water NTC Fault False Flame 09 15 20 28 40 109 110 117 118 125 128 130 133 134 135 154 160 270 321 384 Table 5. Error Codes Calibration Required 55 rSt Fig 28. Receiver status indicator LEDs Fig 29. Resetting Error Codes 000 015 Fig 30. Resetting the Service Due Code.

Comp No. 720898904 (12/11) All descriptions and illustrations provided in this leaflet have been carefully prepared but we reserve the right to make changes and improvements in our products which may affect the accuracy of the information contained in this leaflet. All goods are sold subject to our standard Conditions of Sale which are available on request. BAXI A Trading Division of Baxi Heating UK Ltd (3879156) Brooks House, Coventry Road, Warwick. CV34 4LL After Sales Service 0844 871 1525 Technical Enquiries 0844 871 1555 Website www.baxi.co.uk e&oe Baxi Heating UK Ltd 2011 c