GLOW WORM COMPACT

[B.O.B DOLE]

gonna give up on this one unless you can help
problem is when it is on stand by it fires up on its own with no demand for ch or dhw for a few seconds then cuts out
and if i put it onto hot water with tap on it fires up for a few minutes then cuts out same with heating

 

[ollski]

try replacing both the diaphragms....they cause all sorts of strange problems.

 

[doitall]

In certain circumstances a surge of water pressure will cause the appliance to operate momentararily, this will be indicated by the pump starting and the fan speed increasing.

Quite normal according to glowy