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Thermo Top C Controller Instructions


keith.

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I have a webasto heater on the boat controlled by this controller:

http://www.webastomarine.co.uk/shop/vclose1.asp?prd=125298&cat=26

 

I have followed these instructions:

https://www.manualslib.com/manual/807731/Webasto-Thermo-Top-C.html?page=4#man

and the heater turned on, but didn't turn off an hour later as expected. I am now despite pressing set within 10 secs to delete the program, unable to delete the time.

 

What I am really asking is can anyone explain how to set the timer for automatic operation or can you point me to a better manual?

 

 

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That timer is not a marine timer and is designed to use a three wire loom, if it has two black wires in the plug at the back as all marine looms do it will not turn off automatically without disconnecting one of the black wires and I would need to look up which one it is. If you cut the wrong black wire it will not work at all.

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Turn on the heating once a day at 0730 and off again an hour later when I am on board. I am also wanting to buy and install the frost protection kit for use over winter when I am not on board.

 

 

Edited by keith.
Forgot frost controller
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On 02/10/2017 at 20:48, NMEA said:

OK then cutting the correct black one will (or should) do that. I will need to look up the pin number.

Kind regards David.

From this site page 24 https://www.butlertechnik.com/downloads/4110310A_Thermotop_C_E_Install.pdf  it would appear that I need to cut the +15 black wire.

 

However, reading the whole manual throws up some interesting facts. My boat is installed with 2 radiators, both fitted with TRVs. The Webasto manual advises against that so I have fully opened them. This then leads to how to control the temperature. At the moment I just turn it off when it gets too hot - any better ideas out there? 

 

As I am fitting the frost stat it would probably be a mistake to energise the 1 hour max runtime so I think it would be better to leave it in the maritime mode - again any thoughts?

I have learnt so much about lead acid charging from this site, it would seem that there is a similar learning curve to Webastos!

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