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Webasto Water heater
Help required with our heater
Tuesday,19 September, 2017
3:09 pm
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Tuesday,19 September, 2017
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Dear All.

On our new to us narrow boat, we have a Webasto water heater that heats the domestic hot water and three radiators.

When we switch it on at the controller, it fires up, heats the radiators, then shuts off after 40 mins. It also clicks all the time it is running

When we get cold we switch it on again. Is this right or should it run all night?

We have no instructions and the Webasto website is not very good, all shiny pictures but little info.

I believe the heater is a Thermo Top E and the controller is a Thermo digital timer.marine-digital-timer-220_45.jpgImage Enlarger

Many thanks in advance

Tuesday,19 September, 2017
3:53 pm
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I googled “webasto thermo top C installation” and this was the first hit:

https://www.butlertechnik.com/downloads/4110310A_Thermotop_C_E_Install.pdf

It has a section on setting the timer around P27/28

The clicking will be the fuel delivery pump.  Without it there will be no fuel getting to the burner, it’s why many are installed in the engine bay where the clicking isn’t so noticeable.

Si

Wednesday,20 September, 2017
6:18 am
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Southam, Warwickshire
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I had a Webasto Thermotop C. Yes, it clicked, but it didn’t shut down after heating the radiators. It would fire up when it needed to to maintain the temperature. I didn’t run mine at night. I had a solid fuel stove at the front of the boat. I just used the Webasto first thing in the morning to heat the back of the boat that wasn’t heated by the stove, and on particularly cold days when the stove needed a little help.

Do you really need your central heating on all night?

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Wednesday,20 September, 2017
11:00 am
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Paul Smith said

Do you really need your central heating on all night?  

Perhaps not so cold over there Paul but we recorded an overnight temperature of 4.9° on Monday night and a good half of nights thisvmontb have been below 10°.

So, I’ve lit the stove most evenings and put a shovel full of coal on when going to bed.

Living retirement in the slow lane.

20 years hiring, 6 years of shared ownership and a Continuous Cruiser since 2007 but still learning!

Friday,22 September, 2017
8:21 am
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Southam, Warwickshire
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That’s a fair point Pete. I thought that the temperatures in both countries were similar, but the lowest we’ve had so far is 11º. We’re currently at the same latitude as Notingham. I’m surprised there is so much difference.

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Friday,22 September, 2017
10:07 am
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Paul Smith said
That’s a fair point Pete. I thought that the temperatures in both countries were similar, but the lowest we’ve had so far is 11º. We’re currently at the same latitude as Notingham. I’m surprised there is so much difference.  

It went down to 2.9° last night and was only 3.1° at 7am.

Living retirement in the slow lane.

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Saturday,23 September, 2017
7:08 am
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Southam, Warwickshire
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As a matter of interest, what external thermometer do you use and where do you put it? I used to have a duel thermometer on my boat, but the external sensor kept falling off.

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Saturday,23 September, 2017
3:12 pm
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I use a minimum/maximum one branded prologue, bought ftom a company called Clas Ohlson. The external probe is just tucked under the cratch cover and the thermometer sits just inside the cratch. It automatically resets at midnight. Wasn’t expensive. 

 

This one:

http://m.clasohlson.com/uk/The…..er/36-3317

Living retirement in the slow lane.

20 years hiring, 6 years of shared ownership and a Continuous Cruiser since 2007 but still learning!

Thursday,28 September, 2017
5:15 pm
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pearley said
I use a minimum/maximum one branded prologue, bought ftom a company called Clas Ohlson. The external probe is just tucked under the cratch cover and the thermometer sits just inside the cratch. It automatically resets at midnight. Wasn’t expensive. 

 

This one:

http://m.clasohlson.com/uk/The…..6-3317  

I’ve considered getting that one before and thought it was too inexpensive to be any good. Glad to know it performs well. 

Friday,29 September, 2017
10:05 am
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Thanks Pete. There’s one in the post to me. It will be good to know once and for all how cold I am!

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Monday,4 December, 2017
2:51 am
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Where abouts are/were you Pearley when you wrote this for it to be so cool in September .  We were back in UK in Sept/Oct on Skye and it wasn’t that cold. Wind was a bit fresh is all

Monday,4 December, 2017
9:35 am
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ChristopherHowe said
Where abouts are/were you Pearley when you wrote this for it to be so cool in September .  We were back in UK in Sept/Oct on Skye and it wasn’t that cold. Wind was a bit fresh is all  

At that time we were moored on the Leicester section of the Grand Union at the junction with the Welford Arm. The next morning overnight low was 12.7.

For the next month temperatures were fairly normal then it dropped to 0.5°C on 30 October since it’s been up and down like a yo-yo but gradually colder but quite warm today in Birmingham at 6.3 last night. 

Living retirement in the slow lane.

20 years hiring, 6 years of shared ownership and a Continuous Cruiser since 2007 but still learning!

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