B. F.S.S. DIAGNOSTIC CONDITIONS
In the event that the Phase 7 non-coin microprocessor controller (computer) detects a fault in the Fire Suppression System (F.S.S.), the Phase 7 non-coin microprocessor controller (computer) will display the message “F.S.S. DISABLED … READY”. To find the reason for the F.S.S. disabling, press and hold the red “STOP/CLEAR” 
and green “START/ENTER” 
keys. Doing so will cause the Phase 7 non-coin microprocessor controller (computer) to display one (1) of the following diagnostic messages:
OPEN THERMISTOR PROBE – This message indicates that the F.S.S. thermistor probe is either not connected or is damaged. If this condition is detected, the Phase 7 non-coin microprocessor controller (computer) will immediately enter F.S.S. DISABLED Mode.
SHORTED THERMISTOR PROBE – This message indicates that the F.S.S. thermistor probe is damaged or the wiring is shorted. If this condition is detected, the Phase 7 non-coin microprocessor controller (computer) will immediately enter F.S.S. DISABLED Mode.
DISCONNECTED WATER VALVE – This indicates that the water valve is open or that it is not connected to the Phase 7 non-coin microprocessor controller (computer). If this condition is detected, the Phase 7 non-coin microprocessor controller (computer) will continue to monitor the condition for a period of 5 minutes before entering F.S.S. DISABLED Mode. Once the condition is corrected, the Phase 7 non-coin microprocessor controller (computer) will continue to monitor the condition for 1 minute before exiting F.S.S. DISABLED Mode.
SHORTED WATER VALVE – This indicates the water valve is shorted or the wiring to the valve is shorted. If this condition is detected, the Phase 7 non-coin microprocessor controller (computer) will continue to monitor the condition for a period of 5 minutes before entering F.S.S. DISABLED Mode. Once the condition is corrected, the Phase 7 non-coin microprocessor controller (computer) will continue to monitor the condition for 1 minute before exiting F.S.S. DISABLED Mode.
WATER NOT CONNECTED – This indicates that there is no water pressure at the water valve. This will occur if water is not connected to the dryer or if there is low water pressure in the water line coming to the dryer. This could also be a defective pressure switch or wiring to the pressure switch. If this condition is detected, the Phase 7 non-coin microprocessor controller (computer) will continue to monitor the condition for a period of 5 minutes before entering F.S.S. DISABLED Mode. Once the condition is corrected, the Phase 7 non-coin microprocessor controller (computer) will continue to monitor the condition for 1 minute before exiting F.S.S. DISABLED Mode.