Operation Manual
Water filter cleaning
1. Disconnect power supply.
2. Disconnect heater from tap assembly (6).
3. Remove filter (1) from connecting tube (5).
4. Remove dirt from filter (1).
5. Replace filter (1) to connecting tube (5).
6. Connect heater to tap assembly (6).
7. Release air-plug by opening hot water tap (7) for few seconds.
8. Switch on power supply.
Sprinkler cleaning
1. Screw out sprinkler (4) from drain tube (8).
2. Clean sprinkler thoroughly.
In case sprinkler is composed of few rings screw out connecting screw. Take out each ring.
Remove all dirt (particularly lime scale) and reconnect all parts.
3. Screw sprinkler onto drain tube.
6. Elimination of defects
Water flow too small
blocked water filter (clean it out according to chapter 5)
blocked sprinkler (clean it out according to chapter 5)
Heater does not switch on
suppressed water flow
blocked water filter (clean it out according to chapter 5)
water pressure in water system too low
lack of power supply fuse blown out
Heater does not warm up water but control lamp lights
voltage too low (supplying installation overloaded)
temperature of entering water too low
water flow too high (adjust water flow according to chapter 4)
Water temperature on heater exit too low
water flow too high (adjust water flow according to chapter 4)
temperature of entering water too low
high voltage drop
Water temperature on heater exit too high
water flow suppressed too much by control valve (adjust water flow according to chapter 4)
blocked water filter (clean it out according to chapter 5)
water pressure in water system too low
blocked sprinkler (clean it out according to chapter 5)
Heater is switching on and out automatically
oscillation of water pressure in water system
water flow suppressed too much by control valve (adjust water flow according to chapter 4)
Stepwise changes of water temperature on exit
current rush in power supply system
changes of water flow in result of pressure changes in water system
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