www.timberk.com • electrical storage water heater

www.timberk.com • electrical storage water heater

15

14

water temperature in the water heater reaches the temperature, set by the 

user, the heating is automatically switched off, at that “      ” indicator light on 

the control panel lights down. When water temperature in the water heater 

drops  to  a  certain  level,  the  heating  is  automatically  switched  off,  at  that             

“         ” indicator light on the control panel lights up.

3. Power mode selection

3.1. Press the thermostat knob several times to select the desired heating 

power.
3.2. If you select low heating power then “energy save” indicators light up 

on the control panel and “       ” indicator is shown on the display.
3.3. If you select medium heating power then “normal heat” indicators light 

up on the control panel and “            ” indicator is shown on the display
.3.4 If you select high heating power then “energy save” and “normal heat” 

indicators light up on the control panel simultaneously, and “         ” indicator 

is shown on the display.
3.5. After the heating mode is selected, “energy save” and “normal heat” 

indicators are on for 10 minutes, then they light down.

4. Clock setting

4.1. When the water heater is on, press “mode” button once, and clock 

value will start blinking on the display.
4.2. Press “           ” button to increase hours, in increments of 1 hour for 

single pressing.
4.3. Press “      ” button to increase minutes, in increments of 1 minute for 

single pressing.
4.4. When the desired time will be set, do not press any buttons, the clock 

will keep blinking for 5 seconds and then setting will be completed and the 

clock will start counting.

5. Timer setting

5.1. Water heater activation timer setting

IMPORTANT! 

Water may start dripping from the relief valve hole 

during heating. It is impossible to avoid water leakage 

and you must not prevent it since valve blocking 

may cause rupture of the internal tank (in case of 

equipment failure).

5.1.1. When the water heater is on, press “mode” button twice and the 

clock [00:00] on the display will start blinking.
5.1.2. Using buttons “      ” and “       ” set the desired water heater activation 

time (see item 4.2, 4.3).
5.1.3. . When the desired time will be set, do not press any buttons, the 

clock will keep blinking for 5 seconds and then setting will be completed.
5.2. Water heater deactivation timer setting
5.2.1. When the water heater is on, press “mode” button three times and 

the clock [00:00] on the display will start blinking.
5.2.2. Using buttons “      ” and “      ” set the desired water heater 

deactivation time (see item 4.2, 4.3).
5.2.3. When the desired time will be set, do not press any buttons, the 

clock will keep blinking for 5 seconds and then setting will be completed.
5.3. Timer activation
When the water heater is on, press “timer” button once and “       ” indicator 

will light up on the display and “TIMER” word will light up under the clock, 

after that the water heater on/off timer will be activated, and heating will be 

switched off (if it was on).
5.4. Timer deactivation
Press “timer” button 3 times, “       ” indicator and “TIMER” under the clock 

will light down, after that the water heater on/off timer will be deactivated.

6. Night heating

When this function is activated, water heating will be performed only at 

night, from 23:00 to 06:00. Heating will be impossible during other hours.
6.1. Press “timer” button twice to activate night heating, at that “   ” 

indicator on the display will light up.
6.2. Press “timer” button twice again to deactivate night heating, at that 
“        ” indicator on the display will light down.

7. Timer and night heating

Timer and night heating can be activated simultaneously. For this purpose 

it is necessary to press “timer” button several times until timer and night 

heating indicators light up simultaneously.

8. Control panel locking

8.1. Press and hold “mode” button on the control panel of the water heater 

for 3 seconds to lock control buttons, at that “       ” indicator on the display 

will be shown.

You can also use special button on remote control.

8.2. Press and hold “mode” button on the control panel of the water heater 

for 3 seconds again to unlock control buttons, at that “        ” indicator on 

the display will light down.

9. Switching off

Press the temperature controller handle and hold it for several seconds or 

press “ON/OFF” button on the remote controller to switch off the appliance, 

at that indicator lights will light down and the temperature controller handle 

back lighting will stay on.

9. MAINTENCE

Fig. 13

Fig. 14

Fig. 15

1. Check the power plug and outlet as often as possible. Secure electrical 

contact and also proper grounding must be provided. The plug and outlet 

must not heat excessively.
2. If the water heater is not used for a long time, especially in regions with 

low air temperature (below 0°C), it is necessary to drain water from the 

heater .
3. To ensure long reliable water heater operation, it is recommended to 

regularly clean the internal tank and remove deposits on the electric heating 

element of the water heater, as well as check condition of the magnesium 

anode and, if necessary, replace it with a new one.

4. Preventive operations must be performed upon strict observance of the 

operation manual and safety precautions.
5. The water heater is equipped with a thermal switch, which cuts off power 

supply of the heating element upon water overheating or its absence in the 

water heater. If the water heater is connected to the mains, but water is 

not heated and the indicator doesn’t light up, then the thermal switch was 

switched off or not switched on. To reset the water heater to the operating 

condition, it is necessary to:
- de-energize the water heater, remove the plate of the side / lower cover 

for horizontal-type/vertical-type water heater respectively. 
- for FSM6/FSM4 series horizontal-type water heaters: press the button, 

located in the center of the thermal switch, placed near the heating element 

(with a round shape), until it clicks, Fig.14;
- for FSM5/FSM3 series vertical-type water heaters: unscrew retaining 

nut of the thermal switch, fastened on the flange of the heating element, 

turn the thermal switch and press the button, located in the center of the 

thermal switch, until it clicks; Fig. 15;
- if the button is not pressed and there is no clicking, then you should wait 

until the thermal switch cools down to the initial temperature.

IMPORTANT! 

The manufacturer provides an extended guarantee 

for particular water heater components provided that 

timely and proper routine maintenance is performed 

by specialists of an authorized service center (see the 

guarantee card).

IMPORTANT! 

If these actions had no positive result or the thermal 

switch turns off repeatedly during a short period of 

time, then you should de-energize the water heater, 

cut off water supply and contact your local Timberk 

Authorized Service Center for a consult or repair of the 

appliance.