[Slacky]

If anyone wants to buy my old heatwave there quiet welcome for the DIYer 650 you can take it away all new internals with a new frostat controller.

How much?

hows your grippa hot system going matt?you had yours fitted roughly the same time as me....

Going well now Daz thanks. There were a few teething problems and in all honesty in hindsight it would've been more convenient to have bought brand new.

The only thing I find that isn't in keeping with others on here is to get those temperatures being shouted about it needs to run for a good hour in the morning. I dont know if that's because the kit is 4 years old , maybe because the battery might need replacing or because BillyBigBalls isn't telling the truth.  Thats with the return to tank in operation. Anyway, once up to heat its great, thanks.

[NWH]

If it’s taking 4 hours to get to the heat your saying you need a new burner I reckon or like you say old batteries,what model is yours is it a series 300 thermo too C.
How’s it pumping diesel I found poor batteries result in slow pumping from the units diesel pump.

[NWH]

My heater is producing water too hot to use within 10 minutes.

[Slacky]

If it’s taking 4 hours to get to the heat your saying you need a new burner I reckon or like you say old batteries,what model is yours is it a series 300 thermo too C.
How’s it pumping diesel I found poor batteries result in slow pumping from the units diesel pump.

Ive been contemplating changing the battery to see if thats it but its an expensive thing to do if its not the issue.

[NWH]

The best thing you can do is try another battery somehow,I had the same problem with my other heater,they need a good battery supply to work efficiently.
Is the pump on the heater that supplies diesel pumping slowly if it is I would say try a new battery.

[NWH]

When I had a poor battery before it would pump diesel every 1-2-2 seconds,with a correct setup it should sound like it’s hammering.

[NWH]

1 battery is not enough anyway you need 2 inline  acting as they draw loads of power when they are cycling the heater.

[P @ F]

Slacky, has the unit you have been run at full power all the time or has it been used on low heat a fair bit ?

[NWH]

It sounds coked

[P @ F]

It sounds coked

My thoughts exactly , I bet you have a thick coating of soot between the combustion chamber and water jacket or pipe whichever it is , I can’t quite tell from the exploded view

[Slacky]

Slacky, has the unit you have been run at full power all the time or has it been used on low heat a fair bit ?

Full power 100% of the time.

[Slacky]

Is the pump on the heater that supplies diesel pumping slowly if it is I would say try a new battery.

The knocking noise the diesel pump makes doesn't sound slow to me. It knocks probably at least once a second if not slightly quicker.

[Slacky]

It sounds coked

My thoughts exactly , I bet you have a thick coating of soot between the combustion chamber and water jacket or pipe whichever it is , I can’t quite tell from the exploded view

It was serviced last December.

[P @ F]

Does this service include a strip down and clean or was it a replace the glow plug and off you pop kind of service ?
I once had a cambelt done and the van came back with the same belt tensioner on , just a thought !

[Slacky]

The works. It was removed from a different vehicle and full service. Its also had a new ECU fitted and new return pump.

[P @ F]

Well I’m stumped then , as long as the plate heat exchanger is all good then it’s got to be back to power supply as a poss problem.
I did see a couple of chaps the other day using a workshop bench 12 volt 36 amp power supply from the mains , don’t know how much they are , maybe cheaper than a battery but still a handy thing to have .
And I assume it runs the same if the van is running , didn’t Daz get this when first fitted out ?

[Slacky]

How long would you expect a battery to last if it wasn't bench charged for 9 months running one of these?

[P @ F]

Probably around 5 mins 😁

[Slacky]

Probably around 5 mins 😁

I’ll get a new battery. Thanks.

[P @ F]

Heater pulls 36 amp to fire up then drops down a fair bit , can’t remember exactly  but I would think about 6 or 8 amp per hour
What battery you got and how is it getting a charge at the moment ?