Eberspacher 801 question

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Discussion

OldGermanHeaps

Original Poster:

4,634 posts

192 months

Friday 3rd January 2020
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When i apply power to my eberspacher d2 with 801 controller, it defaults to heating off, you need to press the button to start heating. i have a gsm operated remote relay, so I would like it to go into thermostatically regulated heating mode as soon as it receives power, so when I text my van to turn the heating on for 30 minutes it is toasty for me getting in, but because you need to press the button every time this doesn't work if you wire it in the normal way.

1 way to bypass this is to apply 12v to the yellow wire, the problem is this bypasses the 801s temperature regulation, meaning sometimes you get into the van and its 35 degrees and you are sweating so the preferrable outcome would be to reprogram or rewire the 801 so that when you apply 12v to the small red wire it defaults to heating running, with the thermostat set to whatever we left it at.

Is this possible?

If it isnt the only other workaround I could think of would be wiring a seperate mechanical stat or battery operated domestic programmer and putting it in series with my gsm relays connection to the yellow wire.

Any thoughts or suggestions?

tiffx19

142 posts

167 months

Monday 6th January 2020
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Looks like an interface is needed, like this?

https://gsm-start.se/en/webasto-eberspacher/app-co...

OldGermanHeaps

Original Poster:

4,634 posts

192 months

Monday 6th January 2020
quotequote all
Thanks, I hadnt seen that. Bit pricey though for what I want.
I am going to try a £6 12v temperature controller and set it to 25 degrees and put it in series between the gsm relay and the yellow call for heat wire.

italian job

246 posts

245 months

Wednesday 8th January 2020
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Sorry i can't help but id be really interested to hear how you solve this problem, i have fitted an Eberspacher with 801 controller to my van and have a GSM that i haven't got round to fitting yet