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Service Manual
Model No:ES50/80/100V-F1(R)
Chapter 5: Specifications and Circuit Diagram
5-1. Specifications
5-2. Circuit Diagram
L:Brown (or black) wire
N:Blue wire
E:Yellow/green wire
MT1/MT2:High temperature limiter
EH:Heating element
RT1/RT2:Sensor
Chapter 6: Usage ! Cleaning and Maintenance
6-1. Usage
1. After installation, as the tank is empty in the first usage, be sure to open the faucet water inlet valve
and mixing valve. When the tank is filled with water, and the shower nozzle or other water outlet
keeps water outputting, please close the mixing valve, check if there's water leakage at each joint,
and plug the power plug.
2. Turn the knob as per the needed water temperature. The mark of knob increases from water inlet
temperature to 75 . You can set heating temperature steplessly. The heating indicator will shine
under heating mode. Generally the knob should be set to the highest scale. The water heater can
regulate the temperature automatically. The power will be switched off automatically when the set
temperature is reached, and will be switched on automatically when the temperature drops to certain
level. As it continues heating, you can use hot water as well.
When the tap water inlet pressure arrives or exceeds 0.75MPa, the drain hose of safety valve will
discharge large amount of water. It is due to extra high water pressure. Please contact the after
service for disposal.
6-2. Cleaning and Maintenance
Warning!
Repair or maintenance of the water heater can only be performed by qualified service persons.
Improper methods may cause serious injury accident or property damage.
6-2-1. To clean the outside
Disconnect the power supply before cleaning the water heater.
Wipe it lightly with a piece of wet cloth dipped in a little neutral detergent. Do not use gasoline or other
solutions. Then, wipe it with a piece of dry cloth and keep the shell dry. Do not clean it with detergent
containing abrasives (e.g. toothpaste), acidic substances, chemical solvents (e.g. alcohol) or polish.
6-2-2.
To clean the inside
MT1
MT2
Relay
Relay
RT1
EH
-8-
Display panel
Relay
RT2
37
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