1. Remove the cover from the I/O Box and locate the DELAYED INTL’K IN terminals.
2. On the Controller, go to: Main Menu → Diagnostics → Manual Mode, then enable the
Manual Run control.
3. Set the valve position between 25% and 30% using the + (Plus) and – (Minus) controls.
4. If there is a jumper across the DELAYED INTL’K IN terminals, remove one side of the
jumper. If the interlock is connected to a proving switch of an external device, disconnect
one of the wires leading to the proving switch.
5. The unit should shut down and display a Delayed Interlock Open fault message. The
FAULT LED should be flashing.
6. Reconnect the wire or jumper removed in step 5 to restore the interlock.
7. Press the CLEAR button to reset the fault
8. The unit should start.
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