SLOAN • 10500 SEYMOUR AVENUE • FRANKLIN PARK, IL 60131
Phone: 1-800-982-5839 or 1-847-671-4300 • Fax: 1-800-447-8329 or 1-847-671-4380 • sloan.com
Copyright © 2019 Sloan Valve Company PWT MCR-4014-AL/MCR 8012-AX I.I. 0816865 — Rev. 1 (08/19)
PWT TROUBLESHOOTING GUIDE —NON-COMMUNICATING SYSTEM
1. PROBLEM: No water is delivered to any fixture when the push buttons
are pressed.
INDICATOR: No LED lights are illuminated.
CAUSE: No electricity is being supplied to the controller.
SOLUTION: Ensure that the main power is turned on. Check breaker and
transformers. Make sure transformer is supplying 24 VAC (Volts AC).
If no voltage is detected, replace transformer.
INDICATOR: Red LED lights are flashing.
CAUSE: Controller is in “LOCK-OUT” mode.
SOLUTION: Press reset button on face plate or disconnect power to controller for
10-seconds. LED light will stop ashing.
INDICATOR: LED light on input does not illuminate when button is
activated.
CAUSE: Push button is defective, RJ-11 jack is not in correctly, or reed switch
magnets are fouled (MCR 60-A button).
SOLUTION: Unplug RJ-11 Jack then reinstall. Activate push button and check for
LED to illuminate.If this does not x the problem, move a working input line to
the problem terminal then activate button. If the LED light illuminates,
you know the original push button is damaged or defective. Replace with new
button. If the button is an MCR 60-A, replace the magnets inside the push
button assembly (MCR 22-A) or the reed switch (MCR 18-A).
2. PROBLEM: MCR-250-A unit false triggers (activates by itself).
INDICATOR: Input LED light stays on or shows a constant dim light.
SOLUTION: The reed switch is too close to the push rod. Turn off the water
supply to the valve. Remove reed switch from valve body. Remove B-39
Seal. Push reed switch sensor back into the retaining spring away from the push
rod. Reassemble. Check LED light on input. If LED is still illuminated, repeat
action until LED light only illuminates when button is activated.
3. PROBLEM: Input LED illuminates when button is pressed but valve does
not activate.
CAUSE: Control board output jack is not properly connected or is defective.
SOLUTION: Disconnect RJ-11 plug from the jack and then reconnect. If this
does not x the problem, plug a working valves’ output RJ-11 plug into problem
output jack. Cycle the valve using alternate push button.
INDICATOR: NO LED light at output jack. Damaged or defective output
jack on the board. Replace board.
CAUSE: Wiring pigtail to valve damaged or defective.
SOLUTION: Replace pigtail or for 603-ESM valve, replace MCR 1001-A solenoid
operator.
4. PROBLEM: Flush valve does not function after output LED illuminates.
INDICATOR: Valve makes a “CLICKING” sound but does not flush.
CAUSE: No water is being supplied to valve.
SOLUTION: Make sure the water supply is turned on at the control stop.
Check to see if any ball or gate valves have been turned off up stream of the control
stop.
CAUSE: The EL-163-A Solenoid shaft assembly is fouled or jammed.
SOLUTION: Turn the power off to the valve (Failure to do so could result in damage to
the solenoid coil). Remove the EL-166 nut from the solenoid operator. Use a spanner
wrench or pliers to remove the EL-163-A solenoid shaft assembly from the valve.
Clean and/or replace as necessary. Be sure to replace the plunger spring when
reassembling solenoid shaft assembly.
CAUSE: The EL-128-A actuator assembly is clogged or needs to be replaced.
SOLUTION: Shut off water to the valve. Remove the solenoid assembly. Take out
and replace/or clean the EL-128-A cartridge assembly. Make sure the PISTON RING
is on the PLUNGER PISTON.
5. PROBLEM: Little or no water is delivered to bubbler or shower head after
output LED has activated.
CAUSE: Water supply stops are closed or partially open.
SOLUTION: Open stops.
CAUSE: Debris is clogging solenoid lter.
SOLUTION: Shut off water supply. Remove, clean, and reinstall solenoid lter.
CAUSE: Solenoid is worn or faulty.
SOLUTION: Turn off water supply. For MCR 139-A, Rebuild with ETF-1009-A
solenoid repair kit, or replace MCR 139-A. For MCR 194-A, Rebuild
with or replace MCR 194-A.
CAUSE: Flow restrictor in bubbler or shower head is clogged with debris.
SOLUTION: BUBBLER- Remove compression nut from 3/8 O.D. Nylon tubing
connecting to bubbler. Remove and Clean ow restrictor.
SHOWER - Remove shower. Remove and Clean ow restrictor.
6. PROBLEM: Bubbler or shower does not stop delivering water or continues to
drip after programmed run time has lapsed.
INDICATOR: Output LED does not turn off after programmed run time.
CAUSE: Short or moisture at output connection.
SOLUTION: Push the reset button on the face plate. If output LED light turns off
reactivate the valve. If LED remains on remove RJ-11 connection.
Clean output jack and plug with electrical contact cleaner. Reinstall.
CAUSE: Debris is clogging solenoid.
SOLUTION: Turn off water supply. For MCR 139-A, Rebuild with ETF-1009-A
solenoid repair kit, or replace MCR 139-A. For MCR 194-A, Rebuild with or replace
MCR 194-A.
7. PROBLEM: Flush valve runs non-stop (run on) or has a slow leak.
CAUSE: Diaphragm by pass hole is clogged and/or lter ring needs to
be cleaned.
SOLUTION: Shut off water at control stop. Remove top cap and inside cover.
Remove and clean diaphragm assembly. Re-install. In reverse order.
CAUSE: Valve body seat is nicked or defective.
SOLUTION: Replace valve body.
8. PROBLEM: Toilet flushes without activation.
INDICATOR: Button is not pressed and solenoid does not fire.
CAUSE: Crack in the inside cap cover (A-71).
SOLUTION: Shut off water to the valve. Remove top cap and inside cover.
Replace inside cover (A-71). Reassemble.
