User Manual

1. Inlet and outlet
ttings leaking
2. Blank screen
3. Functional keys
not working
4. Water too hot
5. Water too cold
6. Outlet ow
noticeably decreases
7. LED displays E1
8. LED displays E3
9. LED displays E4
10. Pressure relief
valve releases water
11. Display overow
A. Fittings not tight
B. Rubber washer worn-out
A. Power not connected.
B. LCD damaged.
C. LCD not connected to PCB.
A. No water output.
B. Water ow is too low.
C. Key or PCB damaged.
A. Temperature setpoint too high.
B. Water ow is too low.
A. Low temperature set.
B. Too much waer ow.
Inlet strainer or shower clogged.
Outlet temperature is over
67°«C»/ 153° F.
Temperature sensor failure.
Dry Heating.
A. Outlet blocked.
B. I
nlet pressure over lOOpsi or 0.7Mpa.
Inlet water
ow is too high.
A.
Tighten fittings.
B. Change rubber washer.
A. Connect power to the unit.
B. Change LCD.
C. Connect LCD to the PCB Board.
A. Check water supply valves.
B. Open valve to increase flow.
C. Change key or PCB.
A. Set a lower temperature.
B. Open valve to increase water flow.
A. Set a higher temperature.
B. Reduce water flow.
Clean strainer and shower.
A. Reduce the temperature.
B. Turn up the water flow.
Please contact with the local dealer.
Shut off. Clean all outlets from any
debris, dirt, any particle or scale
inside the pipe.
A. Clean shower set.
B. Reduce water pressure.
Reduce the inlet water
ow.
PROBLEMS POSSIBLE CAUSES CORRECTIVE ACTIONS
WARNING: Corrections to problems 8, 9 and 10 should only be performed by qualied
electrician or plumber. The person who initially installed the unit is the best one to
contact for help, or contact Marey for service.
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TROUBLE-SHOOTING / DIAGNOSTIC CHART