Troubleshooting - Sharp WH-237DP Service Manual

Problem
Water is not hot.
- ELB lamp is not lights up.
- Power lamp is not lights up.
- Control lamp is not lights up.
Water is not hot.
- ELB lamp is lights up.
- Power lamp is not lights up.
- Control lamp is not lights up.
Water is not hot.
- ELB lamp is lights up.
- Power lamp is lights up.
- Control lamp is blink or lights up.
Water is not hot.
- ELB lamp is lights up.
- Power lamp is lights up
- Control lamp is not lights up.
Press the Temp. control
button to high level water is
not hot.
Water fl ow out from shower
ass'y is too low.
Water is not fl ow out from
shower ass'y.

TROUBLESHOOTING

Possible cause
Power switch button is defected. Check or replace the mechanical parts
ELB breaker is cut off or
defected.
Main SW. is closed.
Thermostat trip (Cut off).
Reed SW. is defected.
Body valve ass'y is defected.
PCB control is defected.
Triac ass'y is defected.
PCB control is defected.
PCB control is defected.
PCB control is defected.
O-ring is clogged.
Shower ass'y is clogged.
Main water valve is open too low.
Main water valve is closed.
Water volume is closed.
Power switch button is defected.
17
Corrective action
in power switch button.
Check electrical leakage point from
any lead wire or replace the ELB
breaker.
Open main SW.
Reset thermostat.
Replace the reed SW.
Check or replace the body valve ass'y.
Replace PCB control.
Replace triac ass'y.
Replace the PCB control.
Replace the PCB control.
Replace the PCB control.
Check and clean the O-ring.
Check and clean the shower course.
Open main water valve to increase.
Open main water valve.
Open water volume.
Check or replace the mechanical parts
in power switch button.