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Do not know how to use Theben time switch.

Do not know how to use a Theben time switch on an electric thermal storage heater. Currently the heater seems to be on constantly and I would like to make it heat just at night.

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  • Anonymous Mar 30, 2014

    How can I reprogram theben Analogue time switch sul181d?



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I have theben timer sul181h. How to set it for lighting automatically at 6p.m. and stopping at 9p.m.?

Posted on Dec 23, 2010


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How to wire a theben 24hr timer

Generally theben timers are wired same as illustrations shown on following pages
Wiring varies slightly by exact model number.
Most these timers are rated 15 amp.
Safe maximum :: 15 amp x 80% = 12 amp
230V x 12 amp = 2760 watt
For best long-term result, use timer to turn on a contactor (relay) and let the contactor handle switching heavy amp load
Fuse-protect the timer by adding inline fuse to hot wire going to timer.

Jul 14, 2014 | General Electric GE 24-Hour Timer, 2-Pin...

1 Answer

How do i find thermal switch to reset it

Thermal cut-outs or thermal overloads are normally located inside appliance to the rear next too or around heater and best to get an engineer to help with this problem, only ones I know with switch outside are Whirlpool, WhiteKnight and some old Bosch Dryers.
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Mar 30, 2014 | Indesit IS70C Electric Dryer

1 Answer

How to set the time using theben sul 181

how to set the time theben sul 181h and explain its components.

Jul 13, 2011 | Office Equipment & Supplies

1 Answer

Hi I have a night store heater model 79168 in my new home and no idea how to use it!! Please help :)

Here is a good article for Dimplex, a storage heater manufacturer, that explains the the theory and how it works. I'm sure you will find it interesting.

Basically, thermal storage heaters heat ceramic bricks during off peak hours (during the night), store the heat to be used during peak hours (during the daylight hours), when electricity is more expensive per kilowatt hour.

Hope this helps you.

Apr 18, 2011 | Heating & Cooling

2 Answers

Problem with the DeLonghi HHP1500 Mid-Size Heater The heater has worked well for two seasons. We just got back from a long weekend having left the heater on low. When we got back, the light was still on...

There is a overheat safety feature and it can usually be reset. Unplug the heater for 5 to 10 minutes and the plug it back in. If that doesn't solve the problem, there is an internal reset switch, but it's a little hard to find. You will have to remove the back cover, then look for a red button/switch that has 2 wires coming out of it, that go to the heating element. Press that, to reset the safety switch.

But, I must add, the other solution/answer you received ... that it may have burned up the heating element is certainly a reality. In any event, it's not safe to leave a space heater ON and unattended for any length of time. Particularly, since this one somehow slipped of the fireplace hearth while no one was at home. Just be glad the overheat safety switch worked as it should. Electric space heaters are one of the biggest causes of house fires in the U.S.

Feb 24, 2011 | DeLonghi HHP1500 Mid-Size Heater

1 Answer


When asking for help, you should include the brand and model number to help get a great answer.

The automatic defrost system has 3 parts. 1: Timer. 2: heater. 3: thermal switch

The timer will start the automatic defrost cycle every so many hours. If the timer fails, the defrost cycle will never start. The electrical schematics should be under or on the back of the refrigerator. You can use this to figure out how to test the timer.

The heater is what does the actual defrosting. If it is broken, it will not heat.

The thermal switch turns the heater off when enough ice has been melted. If this switch fails, it will prevent the heater from heating.

The heater and the thermal switch will be wired in series and their connections will be securely covered so you cannot test them independently. You can electrically test then together but you cannot decide which one is broken unless you expose or cut a wire. I have never seen a heater fail.

I see timers and thermal switches fail. Heaters don't fail very often.

The heater and thermal switch are in the freezer area and are very close to the evaporator. You will have to take apart enough of the freezer compartment to get to these parts. You will also need to melt enough ice to get to these parts.

Jan 14, 2011 | Whirlpool 21.0 cu. ft. Top Freezer...

1 Answer

The internal circut breaker snaps off soon after water starts to pass though. Why would that happen?

This is common problem with tank-less electric water heaters. There a a couple of things you can do. Turn the temperature down on the thermostat, this will lower the power requirement. The other thing you can do is replace the safety thermal cut-off switch. If you have two or three replace then all at the same time. Thermal safety switches are manufactured by the hundreds of thousands and go bad quit often. Contact the manufacture for free replacement parts.

Dec 16, 2010 | Stiebel Eltron TEMPRA 24 Tankless Water...

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My dimplex night storage heater is not heating up, the power supply is fine. Is there a fuse or trip switch anywhere

thermal heat line melted just 2years 3 weeks old should this heater have been recalled some were put in by the warm front scheme frozen old age pensioner

Dec 19, 2009 | Dimplex Heating & Cooling

1 Answer

My on switch is lit up red all the time

Hell Yes, my electric bill was 200.00 ave. a month last yr

Dec 17, 2008 | Dimplex DS5603 Heater

1 Answer

Slimline storage heaters with no switch to turn on/off - how do you turn them on? have taken off the front panel but can see no switch/override - the electric cable comes straight from the wall into the...

The principle of electric storage heaters is that they take in electricity at night through a central time switch (normally owned by the electricity supply company and usually not controllable by the user).

There should then be a main switch/ fuse box to control the heater circiuts, check for such a box and that it is switched on (This would normally be sited near the electricity meter).

There should be an isolator switch next to each heater but from what you say this is not the case.

There should be some controls on each storage heater marked INPUT with a dial from 1 to 6 or similar then another marked OUTPUT or BOOST.

When you have ascertained the fuse box is on and the heater controls are set to maximum you then have to wait overnight for the heaters to warm up.

Oct 09, 2008 | Heating & Cooling

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