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■ Trouble-shooting
Problems
1. Inlet and outlet fittings leaking
2. LED no signal
3. Functional keys not working
4. Water too hot
5. Water too cold
6. Outlet gets less and less water.
7. LED displays E1
8. LED displays E2
9. LED displays E3
10. Display overload
7, 8 and 9 should only be performed by a qualified electrician. The person who initially installed the unit is
the best one to contact for help.
■ Normal Maintenance
Note: Do not attempt to repair this water heater yourself. Call a service person for assistance. Always turn
off the power supply before servicing your unit.
It is not required any regular maintenance. However, to ensure consistent water flow, the following
maintenance is recommended.
1. Periodically remove scale and dirt that may build up at the aerator of the faucet or in the shower head.
2. There is a built in filter screen at the inlet connection which should be cleaned from time to time. Please turn off the
water flow before doing this.
Possible Causes
A. Fittings not tight
B. Rubber washer worn-out
A. Power not connected.
B. LCD damaged.
A. No water out from shower.
B. Water pressure too low.
C. Key or PCB damaged.
A. Temperature set too high
B. Water flow too small.
A. Low temperature set.
B. Too much water flow.
Inlet strainer or shower clogged.
Outlet temp. is over 60℃/140℉
There is electricity leakage
Temperature sensor failure
Inlet water flow is too big.
11
Corrective Actions
A. Tighten fittings.
B. Change rubber washer.
A. Connect power to the unit.
B. Change LCD.
A. Open valve to get water.
B. Open valve to get pressure.
C. Change key or PCB.
A. Set a lower temperature.
B. Increase valve opening.
A. Set a higher temperature.
B. Reduce water flow.
Clean strainer and shower.
A, Reduce the temperature
B, Increase the water flow
Please contact your local dealer
Please contact your local dealer
Reduce the inlet water flow
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