The ProH2O Module continuously monitors the detection cable for faults along the length of cable. To test the detection cable will detect a leak either dip the cable into a tray containing a reasonable amount of water or take a piece of conductive wire (less than 22AWG) and touch it between two black cores on adjacent sides of either a red or blue core at some point along the cable.
To verify a piece of cable without powering up the system, disconnect the length of cable from the ProH2O Module and use a multimeter to test for resistance between the two outer most pins on the connector at one end of the detection cable with the end of line plug attached at the other end. In normal conditions the resistance should be approximately 1.8Mohms. Placing a section of the cable into a tray of water should reduce the resistance between the outer most pins to approximately 1Mohms.
In normal operation, removal of the end of line plug should put the module into fault.
Simulating an alarm condition and testing for a fault following one of the methods mentioned above verifies the integrity of the cable along its whole length. The detection cable must be completely dry for a fault condition to be detected.