Timberk 0
XTN
Z1, Instruction Manual

Page: 16 / 36

www.timberk.com i nstant water heater
1 6
9. TROUBLESHOOTING
Possible malfunctions and methods of their elimination are given in Table 4.
Table
4
8. MAINTENANCE
During use of the water heater, scale may appear in nozzle openings of the
shower spout. This reduces efficiency of heating, deteriorates water spray-
ing, and increases water pressure in the heating vessel. For prevention of
such phenomena, it is necessary to periodically clean the nozzle using
household chemical agents and soft brushes. Do not use abrasive cleaning
substances and inappropriate chemical agents.
a) Outer care:
- Switch off the appliance and allow it to fully cool down.
- Clean the outer surface of the appliance enclosure using a slightly moist-
ened soft cloth and then wipe it dry. Do not use abrasive cleaning sub-
stances.
b) Filter cleaning:
If water flow rate from the heater decreases, it is necessary to clean the
coarse filter installed at the cold water inlet to the water heater. Use the
following procedure:
- Switch off the appliance and allow it to fully cool down.
- Shut off cold water feeding.
- Unscrew the cold water feed hose from the water heater, remove the
coarse strainer and flush it under a jet of flowing water.
- Restore the inlet connections in the reverse sequence.
Problem
Power supply indicator
does not light up when
power is switched on.
Indicating heating lamp
does not light up, water is
not heated.
Water is not running from
hot water outlet tap.
Water leakage .
Water at the outlet from
water heater is sometimes
hot, sometimes cold.
T he heating indicator
«Power» continues
glowing, while the water
inlet valve is closed.
Possible causes
1. No power.
2. Temperature limiting device
temperature switch has tripped out
or was not enabled.
3. Defective printed circuit board.
4. Current leakage.
1. Insufficient water flow.
2. Temperature limiting device
actuated.
3. Too low pressure at water
supply system.
1. Water supply is switched off.
2. Cold water inlet tap is closed.
Problem with leak tightness of
connections
1. Unstable water pressure .
2. Temperature of water at the
outlet from water heater is too
high, overheating protection
trips repeatedly.
Malfunction of water flow sensor.
Troubleshooting method
1. Check that electric power supply is
connected.
2. Enable temperature switch.
3. Address the maintenance expert of
Timberk Service Center.
1. Increase water flow.
2. Wait till the temperature
limiting device cools down and
operates (for Watermaster I
Series).
3. Switch on the temperature
switch (for Watermaster II Series).
4. Wait till normal water pressure
builds up in the system.
1. Wait till water supply in the water
supply system is restored.
2. Open the cold water inlet tap.
Restore leak tightness of
connections.
1. Use water heater as soon as water
pressure stabilizes.
2. Reduce heating capacity, increase
water flow.
Address the maintenance expert of
Timberk Service Center.