54
F238006
Section 4 Troubleshooting
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
12. EMPTY ALARM ANALYSIS
Symptom: The display reads “EMTYXX,” the buzzer sounds and the signal light is displayed. The
computer did not receive an input from the low side of the water level switch telling it that the washer-
extractor emptied in the time that had been programmed.
NOTE: If the empty alarm occurs in less than one minute from the point when the drain closed light goes out,
check the drain time that has been programmed into this step of the computer. The factory recommends that
at least one minute should be provided for each drain step.
5
WHEN THE COMPUTER GOES INTO A DRAIN
STEP (D1XXXX), AFTER SEVERAL SECONDS,
THE DRAIN CLOSED INDICATOR ON THE
FRONT OF THE COMPUTER WILL GO OUT. AT
THIS POINT, DOES THE WATER DRAIN FROM
THE WASHER-EXTRACTOR IN A TIMELY
MANNER (I.E., TOTAL DRAIN TIME SHOULD BE
BETWEEN 30 AND 40 SECONDS)?
NOTE: THERE ARE TWO DRAIN VALVES ON
THE UW80, UW100 AND THE UW125. CHECK
BOTH VALVES IN THESE CASES.
CHECK THE DRAIN(S) FOR STICKING
GATES AND CHECK THE ENTIRE DRAIN
LINE FOR BLOCKAGES. IF NO BLOCKAGES
OR STICKING GATES ARE FOUND,
REPLACE THE VALVE(S).
YES
NO
TEST THE WATER LEVEL SWTCH
AS FOLLOWS. REPLACE THE
WATER LEVEL SWITCH, AIR TRAP
AND/OR TUBING AS NEEDED.
A. CHECK THE AIR TRAP TUBING
FOR LEAKS AND/OR BLOCKAGE.
B. CHECK THE WATER LEVEL
SWITCH WITH A CONTINUITY
TEST OR WITH AN OHMS TEST
AT THE FOLLOWING TERMINALS:
11 AND 12 (FOR LOW LEVEL)
21 AND 22 (FOR MEDIUM LEVEL)
31 AND 32 (FOR HIGH LEVEL)
THIS SHOULD BE A CLOSED
CIRCUIT AT ALL THREE POINTS
THAT OPENS WITH AIR
PRESSURE TO THE SWITCH.
BLOW INTO THE SWITCH TO
PROVIDE AIR PRESSURE.
NOTE: OPENING THE SWITCH
WILL LIGHT THE LED INPUT
INDICATORS ON THE DISPLAY.
YES
IS THERE
VOLTAGE (220
VOLTS) AT THE
DRAIN
VALVES?
NO
DOES THE DN
LIGHT ON THE
FUSEBOARD
STAY ON
CONTINUOUSLY?
CHECK FOR MISWIRING AT THE
FUSEBOARD OR FOR A SHORT ON THE
WIRE THAT ENERGIZES THE RESPECTIVE
DRAIN VALVE (E.G., IF M3 STAYS
ENERGIZED BUT THE DN LIGHT ISN'T LIT
ON THE FUSEBOARD, CHECK THE WIRING
BETWEEN J3-1-5 AND J10-1-1).
NO
MAKE SURE THAT THE
MAIN POWER TO THE MACHINE
HAS BEEN TURNED OFF. REMOVE
THE WIRES BETWEEN J4 AND J5 ON
THE INTERFACE BOARD. PLACE A
JUMPER BETWEEN THE TWO WIRES.
DISCONNECT THE RIBBON CABLE
BETWEEN THE COMPUTER AND THE
FUSEBOARD. TURN ON THE
MACHINE'S MAIN POWER. DOES THE
DN LIGHT ON THE FUSEBOARD COME
ON IMMEDIATELY?
YES
THERE IS A POSSIBILITY THAT THE
FUSEBOARD HAS BEEN CONTAMINATED.
TRY CLEANING IT. IF THE TEST MENTIONED
IN THE PREVIOUS STEP IS STILL
UNSUCCESSFUL, REPLACE THE
FUSEBOARD.
CHECK THE RIBBON CABLE BETWEEN
THE COMPUTER AND THE FUSEBOARD.
REPLACE THE RIBBON CABLE IF NEEDED.
IF THE RIBBON CABLE IS OKAY, REPLACE
THE COMPUTER.
YES
NO
3
1
2
4
PHM1928S
