Hi there
I have 2 Worcester Bosch Highflow 400's in 2 rented houses which have
been an absolute nightmare. Both boilers were new about 4 years ago
and in that time I have had perhaps 10 breakdowns on each boiler.
Research on "the net" reveals reliability problems with that model and
it seems they are very sensitive to any rubbish at all in the central
heating system. My boilers were installed on clean (new) systems of
HEP2O pipe and new radiators and the system was well flushed prior to
installation
It seems the diverter valve often goes wrong and there is a little 1
way non return valve which often sticks. The plate heat exchanger has
been removed and descaled at least once on one boiler and the high
temperature trips have often "popped out" even when brand new on both
(these trips are not counted as a breakdown in my statistics!!)
There is also little plastic filter (on the heatbank?) which clogs and
even the electronic timer clocks have gone wrong once on each boiler.
Why should an electronic timer go wrong for goodness sake?
I'd appreciate replies on 2 things
1. Any experiences you have had on this Worcester model (only) I know
Worcester generally are supposed to be good for reliability
2. Comments on my plan is to install a stainless steel Megaflo (or
similar pressurised tank like the Telford stainless tanks) asap to
supply hot water and junk the Highflows for a system boiler when the
tenants move out next summer. I know this "stored water solution" is a
better solution for my purposes as I have used it in other properties.
One huge advantage in a property with Tenants is that the immersion heater can be turned on as a "back up" as even the best boilers will always break down every so often.
Ideally I would like to convert the Highflows to a boiler which is
stuck in "heating mode" but the electronics apparently go into a
routine (even if the hot water is off) which instructs the boiler to
fill up the storage tank with hot water when first turned on.
I'll install an external 2 port valve and S plan or Y plan to heat the
megaflo
Can anybody suggest a clever way to rewire or fool the boiler to think
the hot water tank is up to temperature so it could be used as a
conventional boiler? (ie change the sensing thermister for a fixed
value resisitor or something?)
I'm willing to pay for somebody to convert both boilers. They are in Plymouth, Devon, UK
Thanks for any help - Lightman
I have 2 Worcester Bosch Highflow 400's in 2 rented houses which have
been an absolute nightmare. Both boilers were new about 4 years ago
and in that time I have had perhaps 10 breakdowns on each boiler.
Research on "the net" reveals reliability problems with that model and
it seems they are very sensitive to any rubbish at all in the central
heating system. My boilers were installed on clean (new) systems of
HEP2O pipe and new radiators and the system was well flushed prior to
installation
It seems the diverter valve often goes wrong and there is a little 1
way non return valve which often sticks. The plate heat exchanger has
been removed and descaled at least once on one boiler and the high
temperature trips have often "popped out" even when brand new on both
(these trips are not counted as a breakdown in my statistics!!)
There is also little plastic filter (on the heatbank?) which clogs and
even the electronic timer clocks have gone wrong once on each boiler.
Why should an electronic timer go wrong for goodness sake?
I'd appreciate replies on 2 things
1. Any experiences you have had on this Worcester model (only) I know
Worcester generally are supposed to be good for reliability
2. Comments on my plan is to install a stainless steel Megaflo (or
similar pressurised tank like the Telford stainless tanks) asap to
supply hot water and junk the Highflows for a system boiler when the
tenants move out next summer. I know this "stored water solution" is a
better solution for my purposes as I have used it in other properties.
One huge advantage in a property with Tenants is that the immersion heater can be turned on as a "back up" as even the best boilers will always break down every so often.
Ideally I would like to convert the Highflows to a boiler which is
stuck in "heating mode" but the electronics apparently go into a
routine (even if the hot water is off) which instructs the boiler to
fill up the storage tank with hot water when first turned on.
I'll install an external 2 port valve and S plan or Y plan to heat the
megaflo
Can anybody suggest a clever way to rewire or fool the boiler to think
the hot water tank is up to temperature so it could be used as a
conventional boiler? (ie change the sensing thermister for a fixed
value resisitor or something?)
I'm willing to pay for somebody to convert both boilers. They are in Plymouth, Devon, UK
Thanks for any help - Lightman
