Managed to get a guy down from Heating World to have a look at it on Sat morning:
He updated bottom baffle with a later design. I had already hoovered out the baffle box.
Removed burner, ajusted electrodes, cleaned delivery area, fitted new nozzle (50x 80 rather than a 60x80),renewed gasket and re-assmbled.
I had moved the oil tank some 6 weeks ago and extended the 10mm line about a metre using a compression elbow. He undid this and applied red hermatite type sealer to olives and threads.
Back to boiler, after bleeding he checked pump pressure with gauge, C02 etc with electronic meter, all good.
He critized balanced flue for not having a inlet baffle box fitted (never had been fitted), he said that without this the boiler would get a big slug of freezing cold air (weather conditions depending) on initial start which could cause lockout. This little boiler does make a lot of noise outside the house. He did promise to send this down, but still waiting on this.
After he left, leaving me a new flexipipe with NRV, a spare pump with coil attached I noticed combustion fumes coming out of the baffle access cover which I resealed with Heat Mate high temp silicone mastic cost 8 quid.
He was onsite for 2 hours, did the service, left the spare bits and charged me £110 cash, after having driven 70 odd miles to get to me.
It has locked out a few times since with different symptoms, when air temp is very cold and damp, a double start (clicking and firing quickly within a second or so). But otherwise much improved. I think it was a combination of leaking air into oilline, lack of a service and the lack of a baffle on the inlet. Did I get a good deal?
