Recent content by Terry B

It is recommended that the whole diverter valve is changed, a diaphragm is only part of the valve. A skilled engineer should be able to change the valve in about 40 min, no special tools are required. part number 6102802.

If you have to turn the boiler off and on again to get it to work, the problem is with the ignition box(fixed to the gas valve). It most likly is a royal blue colour and will require changing. the part number is 6210203 (note some later boiler have a turquoise colour box they cannot be...

If the boiler works ok on heating the most likely problem is a blocked / partially blocked plate heat exchanger. It most likely require changing, and the heating system may require flushing. For more technical help ring Sime on 08709911114

The Halstead trio was joint venture between Halstead and Sime. The boiler is about 8 years old. Your problem could be the thermister(dont usually go faulty) The PCB. Or a badly adjusted gas valve(not modulating) If your not CORGI regestered you shouln't do anything with the gas valve.

The button that has to be reset is the overheat stat. The usual cause of overhwating is poor circulation in the hot water mode. Pump sticking, partial blockage, overgassed. The most probable cause is partial blockage. after isolating and draining the boiler, remove the pipe that connects the...

The fault is probably due to a faulty divereter valve. The rads are probably warmingup when hot water is being used. There is no way to service this valve best to replace it sime part number 6243802. The only other posibility is a faulty frost stat, but the Super 80 was not fitted with a...

The fault on your boiler is probably due to swollen "O" rings in the diverter valve. The most likly cause is the use of a particlar water treatment. the problem can be resolved by the use of upgraded "blue" O rings. Sime can be contacted on 08709911114