Alde heating

[MikeandJenny]

We have lost all heating and hot water powerd by electric put works normally on gas
I removed the p c b for testing I had the call and the 2 kW heater relay was faulty so an new was purchased and I have fitted it to day Wednesday 11 May and after letting get hot this took about 45 minutes to get hot water to hot to put your hand in
I got P c b from
Mr graham Cutmore engineering
01933 622593

a very knowledgeable man new straight away that it's the second relay
As our caravan is getting on I thought I will change the anti freeze while it I am doing job on the van I have made up a pump system to allow easier refill of fluid and ease any air locks by slowly pumping the anti freeze around the heating system

[JohnM]

I have a Heritage 640CB
Could you detail a bit more how you
1. drain the fluid
2. refill the system
JohnM

[AllanandJackie]

If you look through this forum you will come across all the detail step by step that various members have posted covering how to replace the antifreeze.

[limecc]

I'm moving to Comma G40 because it's superior and G30 is increasingly hard to come by. Both are pink 5 year types and G40 can be mixed with G30 so that's what I'm topping up with.

If I could run to £130 for the 10 litres needed I'd use the waterless coolant by Evans which should last the life of the caravan. Maybe sometime though..

[AllanandJackie]

I have used the Evans (or equivalent) while I was resident in the USA in a highly modified car. It was a good product that lowered the operating temperature of the coolant allowing the engine to run with a larger circ pump to dissipate more heat through the rads at higher pressure, therefore giving a significant boost to the efficiency of the cooling system.

[limecc]