Horstmann Electronic 7 Water Heater Boiler Controller User Guide Set Economy Boost Timer Instruction 

Hey, Glad it was helpful! :-)

Definitely a struggle my last system just switch on.

Hi, Great to hear! :-)

Can't believe you managed to blow up the Nostromo and yet struggle with these settings 😉

@alihart 🤣🤣 well you know being a clone and relearning language was hard enough! 🖤

Hi Janine, Sorry to reply you late. The red LED light should only be On when the power is supplied to boiler during programmed time. In your case the scenario seems the boiler is always powered to heat and this is causing high electricity bill.

Hey mate, Glad the video was help :-) Cheers!

@@bicyclecolours8988 Still cold some I’m upping the hours and intervals slowly.Added Boost for night.

Hey Lisa, Wonderful! Glad to know the video was helpful :-)

Hey, Thanks for sharing a note of appreciation. Glad video was helpful!

Hi Mario, Glad the video was helpful :-) Cheers!

Hey Matt! Thanks for a note of appreciation and glad the video helped :-) Cheers!

Hey Marcus, Sry, the device doesn't have the function to read meter reading. Glad to know the video was useful :-) Cheers!

Hi Brad, Glad you liked it! Cheers :-)

Hey, Glad the video was useful :-)

Hi, Looks like the controller is working fine but boiler isn't. I guess there is some issue with boiler temperature setting or the coils, good to contact a service engineer at the earliest.

Hi, When controller switch's ON it takes a while for boiler to heat complete stored water. It's best to use hot water when the boost is off after 1 hour.

Hi, Glad it was helpful! Cheers :-)

I know the Horstmann timer is connected to two immersion heaters (top and bottom) and the tank is a thermal store always filled with water. During timed program the lower immersion is switched On and during boost the upper immersion heater. The boost is used when additional hot water is needed. The controller summer or winter timings are automatic and cannot be changed manually. This is set by manufacturer during installation of boiler/controller based on your location. The controller automatically switches time during daylight saving. Yes, the timed light will be On when the water is being heated.

Hi Sheroz, I would recommend try setting 3-5 am and 4-6 pm and try using. If this doesn’t help then switch to default settings.

Hi Pawail, Glad the video was helpful. Cheers!

Hi Rebekah, Glad the video was helpful and you were able to perform setup. When the 'Timer' LED is On then it means the boiler is operational. Can you please check if there is supply of hot water after 2 hours. If this is not happening then one cause could be the boiler needs temperature setup to be raised. If nothing is working then it is recommended to connect with boiler service team and get this resolved.

Hey, Glad the video was useful :-)

Great to hear! :-)

Hey, So nice of you. Glad the video was useful :-)

Hi, The temperature setting can be only done in boiler and not in controller. Just to understand is the hot water temperature always low right from the beginning? Over the period of time when hot water is being used the temperature slowly starts to lower in the end. If this is the case then you need to start the boiler in short intervals.

Hi, As you know the advantage of timer function is to run heater during 'Off peak' electricity supply and also to plan for uninterrupted supply of hot water through the day. On technical side as I know usually the Horstmann timer is connected to two immersion heaters (top and bottom) and the tank is a thermal store always filled with water. This water surrounds one more water coil inside tank. These coils are connected to your hot and cold taps. During timed program the lower immersion is switched on and during boost the upper immersion heater. When you start using hot tap, the cold water passes through coils inside the tank and it is then heated by the stored hot water that is inside the tank surrounding the coils. During timer on, all of the water inside the tank is heated up to the temperature set on the thermostat inside the tank. Once the tank is hot, the heater switches 'off' and no more electricity is consumed. The stored hot water looses heat as cold water flows through coils as it is consumed by you. On some instances there could be failure in heating system due to broken immersion, internal thermostat, or the wiring. This may lead stored water to heat at a lower temperature than set level on thermostat. In these events you will have hot water supply in low quantities and also at lower temperatures. The boost feature is designed as an emergency top up if you run out of hot water during the day. If there is a broken system then using boost will also not solve the issue and may cause higher electricity bill. If you feel the issue is not fixable then it's recommended to seek an electrician with test gears to diagnose the problem.

Hi Shirwa, The timed light will only appear when the boiler in ON during your programmed period (both Off-peak and Boost). The timed LED may not be red in case if you have manually switched ON Boost.

Hey, Can you please try resetting the controller as shown in the end of this video and set timings. Hope this works.

Hi Baris, Thanks for a note of appreciation :-) As you have only standard energy tariff, both 'Off Peak Programme' and 'Boost Programme' should result in same energy consumption depending upon your hot water requirement. You can experiment if only using 'Timed or Off Peak Programme' suffices your hot water needs. In that case you may even not require to use 'Boost Programme'.

Glad the video was helpful, your are welcome! :-)

Hey, Sry, not sure why green light on 'Timed'. Can you please connect with service engineer to get this checked pls?

Hi David, It's only the light marked 'Timed' which is an indicator that boiler is On. The Horstmann controller only dictates the boiler to switch On and Off at programmed times. You may need to experiment like 'Boiler On time' Vs 'Daily hot water consumption' and set the program accordingly.

Hi Ryan, As I know the timer is connected to two immersion heaters (top and bottom) and the tank is a thermal store always filled with water. During timed program the lower immersion is switched On and during boost the upper immersion heater. The boost is used when additional hot water is needed. You can use Boost program if you anticipate more usage of hot water or you can switch it ON on need basis. The off-peak program is to put the boiler ON if you have an option for off-peak tariff plan for electricity. The boiler can run during off-peak time and store water for the entire day. This way you pay less electricity bill.

Glad the video was helpful :-) You are so welcome!

You are so welcome! :-)

Hi, The clock on Horstmann controller is set by manufacturer. You may need to adjust clock only when you reset the frozen controller. You need to setup Off peak programme to make your boiler run.

Hi, The unit is fitted with an automatic clock that is pre-set on manufacture and should not normally require any adjustments by the user. The clock will automatically adjust the time to Summertime (BST) or Wintertime (GMT) as appropriate and this setting is always shown on the clock display by switching the black dot automatically between summer or winter. The black dot is just an indication for summer or winter time and doesn't need any adjustments.

You're welcome! :-)

Hey, Glad the video was helpful 😊

The light will only glow during timer period. Glad the video helped :-)

Hi Amber, Please keep the 'water heater' switch always ON. The Horstmann Electronic 7 will not work if the switch is turned OFF. Please keep Horstmann Electronic 7 switched ON all time. The electricity will only be consumed when the heater is on.

Hi Jamie, Yes, the controller needs to switch automatically between summer and winter.

Hi Wahid, Setting all 3 off peak intervals at same time will result NO hot water supply.

Hi, Happy to know video was helpful. You're welcome :-)

Hi Paul, Sorry to hear that. Looks like some electronics is broken and you may need to seek an service engineer's advice to get this evaluated and fixed.

Hi Shazmeen, The controller cannot be changed for summer or winter timings manually. This is set by manufacturer during installation of boiler/controller based on your location. The controller automatically switches time during daylight saving. It's recommended you connect with an electrician or boiler manufacturer regarding the water quality from boiler.

@@bicyclecolours8988 alright, thank you for replying ☺️

Take care, Cheers :-)

@@bicyclecolours8988 o disable the Horstmann Electronic 7 water heater and have continuous hot water, you will need to switch off the timer on the device. Here are the steps to do this: Locate the Horstmann Electronic 7 water heater and find the timer control panel. Turn off the power supply to the water heater unit. Press and hold the "Boost" button on the timer control panel. While holding down the "Boost" button, turn the power supply back on. Release the "Boost" button once the LED display on the timer control panel starts to flash. Press the "Boost" button again to turn off the timer function. Wait for a few minutes to allow the water heater to heat up and provide continuous hot water. Please note that disabling the timer function on your water heater may increase your energy consumption and lead to higher utility bills. It is recommended that you consult with a professional plumber or electrician before making any changes to your water heater.

Hi, Sry not sure about old electric 7.

Hi, Hi, You only need to make black dot on to 'TIMED BOOST' when you set timer for 'BOOST PROGRAMME'.

Thank you will try it tonight another thing I don’t have off peak electricity but don’t think that matters I have set my off peak program to the same as yours 4.30-5.30. Do I have to leave the off/switched output/timed on TIMED when wanting the hot water to heat in the night? I don’t need hot water daily as sometimes not here so should I switch that button to OFF if not here especially as sometimes I am not here for three weeks and don’t want to heat water if I am not here. So to recap do I put that LH side switch pressed to TIMED when I want the hot water at night and to OFF if I am not going to be here and it won’t heat up? Am getting there with your kind help thanks x

Hey, Happy to help :-) Please find my answers below - 1. Yes... you need to leave the off/switched output/timed on TIMED when wanting the hot water to heat in the night. 2. Yes... put that LH side switch pressed to TIMED when you want the hot water at night and to OFF if you are not going to be here and it won’t heat up. Have a great day!

Thank you very much will keep trying.

Hi Paula, It purely depends on your hot water consumption. The boiler acts like a thermos which stores hot water. If in case you consume all hot water before evening then you may need to set one more timer for the evening before you are back from work. Please keep the time clock and fuse switch on.

Thank you very much. I have been using it without the ‘fuse’ switch being on and it seems to be continuing to work. I thought that fuse button was the immersion, as my electricity bills have been very high when it has been on constantly.

Hi Paula, Good to know about the fuse switch, hope you continue to keep it in off position then. Cheers :-)

Hi George, If you are using Horstmann Electronic 7 controller then use Boost button only in case of additional hot water requirement. The Boost will run boiler heater for an hour. With this type of controller not sure about Tracer switch.

Hey, Yes, when you push boost button the boiler will run for an hour and stop. This will happen as many times as you push boost in a day.

Hi, The best guess that I could make is the manual/thermostatic setup for shower mixer isn't working well. Check if you recently amde changes for winter and setup is disturbed. The temperature setup for tap is always different than shower. The other reasons could be like - - Boiler is supplying hot water to radiator and shower at the same time. - Temperature setting in boiler is low and this is not helping in winter as cold water is consuming more energy to heat. - The hot water discharge at dish washing is low compared to shower. In that case hot water last longer at dish washing. If nothing works out then last guess could be if there are any insulation issues to piping system in bathroom which requires plumber assistance.

Hi Osman, Sorry, I personally never did this. I setup device based on hot water consumption. Setting boiler on for all day may increase your electricity bill. But in case you have such requirement then recommended to setup controller ON for whole day in two intervals, e.g. 1 am to 11 am and 1 pm to 11 pm.

Hi Brian, You can turn the switch to 'OFF' position when you are away. The program stays the same when you switch it back after your holiday.

Hey, Yes, that's absolutely correct. When you are home and need hot water supply then switch it to 'TIMED'. When you are away and home doesn't need hot water supply then switch it to 'OFF'.

@@bicyclecolours8988what about ‘switched output’ ? What does that do please

Hi Leito, As you can see the non-screen is mechanical and screened one is electronics and software based. I guess both perform in same way. The electronic one is more user friendly with respect to setup, got nicer GUI. Please contact Horstmann customer support to check on how to replace old version with new one.

Hi Ravi, The clock is pre-set on manufacture and should not normally require any adjustments by the user. If this is not correct than try resetting the controller once. If reset doesn't help then you may need to check with customer support.

Hi Ian Terrell, This is factory setting. If the auto switching is not happening then you may need to contact service engineer.

Hi, When the timed light is illuminated it indicates the power supply to boiler is On. There should be some indication on boiler to say it is working.

Hi Mihai, This setting needs to be done on boiler. The controller only programs boiler switch on and off timer.

Hey, As you need hot water for whole day I recommend to set timers couple of hours in the morning and evening. Based on your consumption I recommend you decide to reduce or increase ON time for your heater and also decide if in case timer needs to be set for afternoon.

Hi Vishal, If I understand correct in case all of your immersion heaters and Elctronic-7’s are located individually at each bathroom then you need to program them separate based on consumption at each bathroom.

@@bicyclecolours8988 hi, no they are connected to 1 megaflow cyclinder

Hi Vishal, you mean three separate Electronic-7 connected to one Megaflow cylinder? Sry, in most cases what I have experienced is one Electronic-7 connected to boiler and it controls both regular and boost heaters. Your setup is very new to me, In this case I would recommend to perform setup based on trial, watch for hot water consumption and switch heaters accordingly.

Hey, I would recommend to start using hot water after the boiler is off. Hope I answered your question.

Hi, The controller has inbuilt battery and your setup will remain even if you switch off and start after a while.

Hi Hamza, The boost light will not go on during boost timer instead the red LED (Timed) will light up when the boiler is running.

Yes, absolutely. The boiler gets auto switched Off when it has reached to set temperature. If you feel issue looks baffling then it's recommended to connect with an electrician or boiler manufacturer.

@@bicyclecolours8988 Thanks for responding, I appreciate it.

Thank You !

Hi Abdul, The heating will not turn on automatically at night. You need to set off peak timings. If you turn off all the 3 off peak timings then you will not have hot water in the morning. Initially you can set off peak timing for 2 hours and amend to increase hours later based on your hot water consumption.

Hi, Many Thanks, Much appreciated! 👍

Cheers :-)

Hi Vedika, Can you please check if you setup second timer On and Off at the same time. I hope you didn't miss out AM and PM part during setup.

@@bicyclecolours8988 hi … I did check … the on and off time is same but still the 3rd timer shows off but first and second is on even after setting up … I am not sure if I can share pictures or video here for you to see

Hi Vedika, Seems the controller is frozen. Can you please reset the controller as shown in this video by pressing all four button together and again try setup the program timer. I hope this helps to resolve your issue.

Hi Vanessa, Glad the video was useful. The timer setup completely depends on your hot water usage. You need to consider hot water use in kitchen and other hand washing areas. I would recommend set the timer for 2 hours each in the morning and evening. Later observe your usage and gradually reduce the heating period by 15 minutes and check if that effects any hot water shortfalls.

@@bicyclecolours8988 That’s a very useful suggestion! Thank you so much :)

Cheers Vanessa!

To program my hour and minutes are not blinking.. what should I do..?

Hey, The Electronic 7 is fitted with an automatic clock that is pre-set on manufacture and should not normally require any adjustments by the user. The clock will automatically adjust the time to Summertime (BST) or Wintertime (GMT) as appropriate and this setting is always shown on the clock display.

Hey, Glad to know video was helpful :-) Setting controller timer allows boiler to get switched On when temperature of water gets lowered in the storage. So programme setup needs to be depending on your water usage. The boiler gets auto switched Off when it has reached to set temperature. If you set all 3 timers between 12am to 6am and if this setup is good enough to keep hot water supply for entire day then you are good to go. If you feel hot water runs out later in the day then it's recommended having one setup during the day.

Many thanks for your prompt reply, and thanks for the clear video 🎉

Take care, Cheers!

Hi, It's never possible the Switch be automatically flipped from Timed to Off position. Can you please check if the switch is broken and it springs back after a while or there is a high probability someone has touched it accidentally.

@@bicyclecolours8988 Got it, thanks for the tutorial and the reply.

Take care, Cheers!

Hi, Yes, the led doesn’t turn On when boost is selected.

@@bicyclecolours8988 Thank you for that fast reply.

Hi, Seems like there is some issue with temperature setup in the boiler. If this is the case then recommended to connect with boiler service engineer. Please note the Horstmann Electronic is only meant for timer setup.

Hi Wilson, Boost lets you temporarily switch ON hot water outside of scheduled events. When Boost is used on demand it does heat-up the top part of the cylinder only. The bottom part of boiler cylinder is still cold. If you need all time hot water on demand basis then the most recommended way is to use instant water heater rather than programmable boiler controller. Or you can follow this video to set program for specific time and hot water will be stored for entire day to use.

Hey, I understand your prob here... hope you have enough hot water hereafter :-)

Hi Charsii, Thanks for your note of appreciation. You can set controller timer at frequent intervals so boiler gets switched On when temperature of water gets lowered in the storage. The boiler gets auto switched Off when it has reached to set temperature.

Hey Alessa, The Electronic 7 is fitted with an automatic clock that is pre-set on manufacture and should not normally require any adjustments by the user. The clock will automatically adjust the time to Summertime (BST) or Wintertime (GMT) as appropriate and this setting is always shown on the clock display. No adjustment is needed to be made by the installer/user. Sometimes the unit needs resetting and in this case the clock should be adjusted to the correct time of day.

@@bicyclecolours8988 but the unit i received has a manual switch inside that it had to be selecte either of them for it to panel to turn on so I selected GMT.

Hi Alessa, I get your point. If there is a manual option then you need to adjust clock when day light saving begins starting summer. I guess the timer program remains the same as it will work based on clock and you don't need to reset timer again.

Hi, Glad you liked the video and hope the hot water issue gets resolved soon.

Hi, Can you give it a try to setup your boiler run timing close to your usage timing, for example if you start using hot water at 6:00 am then set controller to end just before like 5:55 am. If this works then I guess there is some heat lose from the boiler over a period of time.

This is happening to mine too. I have just reset it and for the second and third timer I set them to the same time as in the video. On at 12pm and off at 12pm for both. We shall see if it works.

Just an update. I reset my panel by pressing BOOST, MINUS, PLUS & SELECT simultaneously. I set the first timer to 10am to 12pm just for a trial run. I set the second timer on at 12pm off at 12pm. I set the third timer to on at 12pm off at 12pm. It's 10.15am now and the red timer light is on to indicate that the panel is working. However there is no noise from my tank. Usually I would hear a small noise to indicate that the heating element in the tank is working. This leads me to believe that the problem is not the Horstmann panel but the heating element in the tank. I will need an electrician now.

Hi, I wish your issue gets resolved soon.

Hi, The light will glow between timer switched ON and OFF period.

Hi Natasha, I guess there could be some issue with the Boost function. Just to understand, is the timer function working well and boiler is able to deliver hot water?

Hi Anthony, Yes… the setting is applicable for all 7 days of the week.

Thank you

Hi Karnakar, You can set controller timer at frequent intervals so boiler gets switched On when temperature of water gets lowered in the storage. The boiler gets auto switched Off when it has reached to set temperature.

Hi, Looks like the controller is frozen and doesn't allow you to do any changes. Can you please reset the controller as shown in the end of this video and set timings. Hope this works.

@@bicyclecolours8988 hi, yes I tried already but it's not working. The four black dots are showing and even after resetting nothing changes, still the same

Hi, sad to know about the issue, good to contact service engineer.

Hi, Please follow the instruction shown in this video at 2:04. Hope this helps.

Hi, The Switched Output is just the name of the button and there is no mode linked to it.

@@bicyclecolours8988 thank you

Hi, The summer and winter mode are automatic, it's set by manufacturer and comes along during installation. The Clock setup is manual.

Hi Shaz, Sry to hear this. Can you pls try increasing timer period and check once. If nothing is working then it’s good to approach boiler service engineer.

Hey, Sorry to say the security lock settings cannot be altered after being set by the installer. You may need to contact property owner to make any changes.