Eberspacher 'Ticking'

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Switch

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Can anyone explain why my Esberpacher D5 makes a very annoying 'ticking' sound? It is only really noticeable when the thermostat is turned down low. At night, when it is cold, we leave it running but with the thermostat turned right down, the ticking is really annoying). Is this a fault with the unit or just something we have to put up with?
Thanks for any comments/advice.
 
It's fuel pump pulsing small amounts of fuel into the unit.

Why builders insist on installing these thing on cabin bulkheads etc I don't know. Had one in a boat that made the aft cabin unusable when on low.
 
Switch said:
Can anyone explain why my Esberpacher D5 makes a very annoying 'ticking' sound? It is only really noticeable when the thermostat is turned down low. At night, when it is cold, we leave it running but with the thermostat turned right down, the ticking is really annoying). Is this a fault with the unit or just something we have to put up with?
Thanks for any comments/advice.
Click to expand...

I am sure that someone who knows will be along shortly however with my very limited knowledge I think that the ticking noise is the fuel pump so is something that you are going to have to put up with.
 
Rubber bracket helps but top tip is to relocate the pump - they are much better at blowing than sucking (:eek:) so resighting in the the engine room means they are near the diesel tank and in an insulated compartment.
 
You have raised an interesting point. There is always a lot of discussion about servicing Eberspachers or Webastos and this has nothing to do with ticking fuel pumps.
I understand but cannot confirm that on the Broads hire cruisers where each boat is equipped with these heaters they are either on or off...that is no thermostats, That way I am told there are fewer problems of coking up.
I do not know what I have told you is correct but two seperate Broads people have told me not to run at half heat but flat out to avoid trouble...not a problem on our boat as Madame always insists on being overheated.
 
Or you could make your own "rubber bracket" ... iirc I used a bit of pipe lagging ... blummin difficult to hear the pump now - unless you sleep in the aft cabin ... but I don't ... ;)
 
Do remember that the pump is to be fitted according to instrutions. Tube/hose layout, distances and even pump mount angle (~15°) to think about.

Both rubber bracket and wrapping in insulation will reduce noise.

Regarding thermostat and need of service: To prevent frequent stop/start late models manage the heater performance gradually to reduce heat output when approaching desired temperature. Turn it low and keep it running instead of shutting down just to restart it shortly after.

To make this work properly a suitable (original or oem) thermostat has to be used and has to measure either room temp or recirculated air entering the heater.

Fitting domestic type thermostats like Heatmiser will not work and due to too narrow temperature band will increase rapid on/off cycles, hence wearing out heat plug and sooting extensively.
 
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The rubber mount is only half the story, and the early ones which are a simple rubber lined P clip are next to useless, they need to be mounted on something less likely to transmit the noise, also I have found in some cases when a customer complains even with the all rubber mount that scrubbing the usual mount and slipping about six inches of very dense pipe lagging over it and tie wrapping the ends then mount loosely with saddles and tiewraps works wonders. Inland BSS installs are often a problem where over enthusiastic people have used compression fittings at the pump interface thinking that rubber is not allowed, it is if marked BS7840 or you have evidence (a bill) to say that it is.
Personally I reckon the Tygon type fuel line is best of all for keeping things quiet.
 
Switch said:
Can anyone explain why my Esberpacher D5 makes a very annoying 'ticking' sound? It is only really noticeable when the thermostat is turned down low. At night, when it is cold, we leave it running but with the thermostat turned right down, the ticking is really annoying). Is this a fault with the unit or just something we have to put up with?
Thanks for any comments/advice.
Click to expand...

I had an Eber retro'd to my Princess 42, and they put the pickup pump directly behind the small sofa in the saloon, and like you I found the variable speed ticking very annoying. On my T40 the pickup pump is located quite aft on the fuel tank, in the engine compartment, well aft of the accommodation spaces - and you can't hear it all from the saloon or cabins. The rubber pipe kit will improve it but not remove it. You need to relocate the pump, that's the only solution. (Or do what I did, which was to sell the boat).

Cheers
Jimmy
 
Why do people leave their heaters running all night ?

Perhaps a better quality sleeping bag should have been on their Xmas list !

Just turn the heater on in the morning to warm the boat if very cold.

I have slept on board and found ice on deck in the morning but been toasty warm in my sleepng bag.

What wimps you modern sailors have become.
 
theoldsalt said:
Why do people leave their heaters running all night ?

Perhaps a better quality sleeping bag should have been on their Xmas list !

Just turn the heater on in the morning to warm the boat if very cold.

I have slept on board and found ice on deck in the morning but been toasty warm in my sleepng bag.

What wimps you modern sailors have become.
Click to expand...

Nah, you need to keep it warm overnight for when you get up to look at your Lumishores at 3am.

Cheers
Jimmy
 
Switch said:
Can anyone explain why my Esberpacher D5 makes a very annoying 'ticking' sound? It is only really noticeable when the thermostat is turned down low. At night, when it is cold, we leave it running but with the thermostat turned right down, the ticking is really annoying). Is this a fault with the unit or just something we have to put up with?
Thanks for any comments/advice.
Click to expand...

guess why its nick name is "a tick tick pump" :D
 
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