- May 23, 2015
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- Heating Engineer (Has GSR)
If you flush through the combi you let it run ? If so, you will feck the pump one day because if you change the direction of the pump then you got 2 pumps working against each other.
I don't think it's good to flush through and will not do it in the future. To push all the mick through the heat exchanger etc don't think it's the right way. I'd rather would flush the heat exchanger seperatly. Someone told me recently he flushes with the biller running in low speed but just in one direction because of the pump. But as mentioned I would not do it will be too expensive if something goes wrong
He doesn't use a power flusher just the mag unit