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FIRE SUPPRESSION SYSTEM (F.S.S.) VALVE CHECK
The operation of the water solenoid valve can be tested to insure that the water supply system and valve are
functional. Before attempting a system check, be sure that ALL water supply shutoff valves to the dryer are in
the OPEN position, and the dryer must be in the “READY” Mode where no cycle is loaded or in progress.
The procedure is as follows:
1. Press and hold the red “STOP/CLEAR”
key (while in “READY” Mode and no cycle is in progress).
2. Press and hold the “A” key.
3. Water valve will open and water will be dispensed into basket (tumbler) area as long as both keys are held.
The Phase 7 non-coin microprocessor controller (computer) will prompt the user to perform a F.S.S. valve
check at every 4000 hours to ensure proper functionality. At the 4000 hour mark, the Phase 7 non-coin
microprocessor controller (computer) will wait for end of the cycle and then will prompt the user to “PLEASE
EMPTY TUMBLER, THEN PRESS THE ‘STOP/CLEAR’ AND ‘A’ KEYS TO TEST THE WATER VALVE”.
When the “STOP/CLEAR”
and “A” keys are pressed, the Phase 7 non-coin microprocessor controller
(computer) will activate the F.S.S. water valve for 2-seconds, at which point the Phase 7 non-coin microprocessor
controller (computer) will prompt the user with the following message “IF WATER DID NOT TURN ON,
CALL FOR SERVICE. THANK YOU”.
NOTE: The Phase 7 non-coin microprocessor controller (computer) will not let the user continue until
the valve test has been completed.
F.S.S. DIAGNOSTICS MESSAGES
In the event that the Phase 7 non-coin microprocessor controller (computer) detects a fault in the F.S.S., the
Phase 7 non-coin microprocessor controller (computer) will display the message “F.S.S. DISABLED…READY”.
To find out the reason for the F.S.S. disabling, press and hold the red “STOP/CLEAR”
and green
“START/ENTER”
keys. This 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.