The 75 and ZT Owners Club Forums

The 75 and ZT Owners Club Forums (https://www.the75andztclub.co.uk/forum/index.php)
-   The 75 and ZT Owners Club General Forum (https://www.the75andztclub.co.uk/forum/forumdisplay.php?f=9)
-   -   Webasto heaters (https://www.the75andztclub.co.uk/forum/showthread.php?t=310443)

GBCB1986 12th January 2021 20:06

Webasto heaters
 
Hi all, are the webasto heaters all the same in our cars or are they different depending on year of manufacture, whether the car was bought with the optional remote and/or timer unit?

Also apart from the unit and dosing pump is there anything else needed to retrofit it to a car? Is all the pipe work (fuel and coolant), wiring etc already in the car?

Cheers, Graham.

trikey 12th January 2021 20:12

Hi,

There are two types fitted to our cars, one is triggered by a negative signal, the other by a positive (The negative one is the most common)

They can be fitted easily as all cars have the loom and fuel pipe in place, the remote (Telestart) Was an option.

Its easy enough to wire in a Gsm remote or a timer to trigger start up 15 mins before you plan to use the car so the engine is nice and warm, its also easy to wire in the ATC unit so it turns on and warms up the cabin ready for you.

Ched 12th January 2021 22:03

Do you need a T80 telestart as well Andy?

GBCB1986 12th January 2021 22:04

Brill, how can I tell which unit I’m looking at? I’ve found one with the number 66724A on it? Failing that can a +ve trigger unit be converted to a -ve trigger?

macafee2 12th January 2021 22:05

Apart from the dozing pump my two cars had everything else in situ

macafee2

Mogodon 13th January 2021 10:13

One thing to bear in mind is that the vast majority of secondhand Webasto's are faulty (the PCB'S are notorious for developing faults) although they can be repaired.

Assume that unless it states working it's faulty, especially if says untested.

GBCB1986 13th January 2021 19:31

Quote:

Originally Posted by GBCB1986 (Post 2859277)
Brill, how can I tell which unit I’m looking at? I’ve found one with the number 66724A on it? Failing that can a +ve trigger unit be converted to a -ve trigger?

Any thoughts on this guys?

trikey 13th January 2021 19:46

Quote:

Originally Posted by GBCB1986 (Post 2859468)
Any thoughts on this guys?

There is a how to on here which describe the two units (Sorry I cant find it) The + or - isn't an issue, if its a 12v trigger then its a straightforward signal from your device of choice, if its a - start, then you just need to wire in a relay to switch the negative, dead easy to do, I have the same set up in 3 of our cars.

trebor 13th January 2021 20:30

There are only two variants of the FBH fitted to the 75, most are later model 98570B, early cars had a model 66232C, you need to be certain which model you have when testing. The model number should be on the Webasto sticker on the side of the

Remote starting For 98570B - its earth to Pin 3

Remote starting for 66232c - its +12v to Pin 1

As Trikey says it doesn’t matter which one you have as long as you know which one it is and wire the remote accordingly

You will need a working FBH, dosing pump and exhaust for a basic installation, the wiring will be present in the car , if you want to start it remotely then that can be done once you have it installed and working

GBCB1986 13th January 2021 21:11

Thanks guys for your help, I’m just a bit confused now about the heater I’m looking at with it’s number 66724a. What’s this one? The seller is saying it’s from a 75.


All times are GMT. The time now is 08:20.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright © 2006-2023, The Rover 75 & MG ZT Owners Club Ltd