SPA
Page 62
Fault Main Contactor
The control activates the main contactor if steam is required from the
humidifier and the safety interlock is closed.
The control switches off the main contactor if the safety interlock is
open or if steam is no longer required.
If the control detects current for a minimum of 15 seconds, even
though the main contactor should have been deactivated, the control
displays “
Fault Main Contactor
.”
The maximum water level message is typically displayed only when
the main contactor is activated, i.e. if steam is required and the safety
interlock is closed. If the control registers maximum water level for lon-
ger than 15 seconds, even though the safety interlock is open or no
steam is required, the control displays “
Fault Main Contactor
.”
System failure
Mainboard is defective.
Lost Ground Control
Communication between main board and display is disturbed.
