In article ,
geoff wrote:
The worst offence which boiler pcb designers commit (IMHO) is the
direct switching of reactive loads (fans, gas valves etc) without the
use of any kind of snubber to reduce relay contact wear.

A diode costs what - less than 1p in bulk? Perhaps they want it to fail -
just out of warranty.

--
*Give me ambiguity or give me something else.

Dave Plowman London SW 12
RIP Acorn