I have an SVM 1802 that isn’t doing its job. When the thermostat is calling it doesn’t move.
If I bang it a couple of times it then comes to life. Is this the head or the value at fault?
It does manage to close ok once the heating has reached the set temperature.
If I bang it a couple of times it then comes to life. Is this the head or the value at fault?
It does manage to close ok once the heating has reached the set temperature.