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Assembly instructions | LK Electric Boiler - 4,5
Troubleshooting
Intervention in the boiler which requires the use of tools should be carried out by an authorized electrician.
Begin all troubleshooting tasks by looking at the status indicators, see the Control panel section.
Error
Possible cause
On/off indication
The electric boiler is currentless.
is off, there is no
Circuits switched off.
heat in the heating
The electric boiler is blocked externally.
system.
Alarm light is on.
Overheating (maximum safe temperature)
protection is triggered.
No or insufficient
Thermostatic valves on the heating system or
heat.
boiler thermostat set at too low temperature.
Faulty adjustment of bypass valve.
Group fuses for
The electric cartridge is broken.
boiler are triggered.
Intervention in the boiler, which requires the use of tools, must only be carried out under the supervision
of an authorized installer!
Drawings
2
3
5
4
7
8
9
EN.33.C.111.1804
8 (9)
1
6
213
12
11
10
Measures
Check the fuses.
Check that the main and control switches are on.
Check if the boiler is blocked by external switching/room ther-
mostat.
If the overheating (maximum safe temperature) protection goes
off, the function should be controlled at the circulation pump and
valves. During resetting the button on the overheating (maxi-
mum safe temperature) protection is pushed in when the boiler
temperature falls below 65°C (push the button hard for reset).
Inspect and adjust.
Inspect and adjust.
Inspect the electric cartridge by testing it in isolation. Measure
between the outward side on the contacts, and earth.
Inform the installer!
14
1.
Cable bushes
2.
Automatic bleeding valve
3.
Expansion vessel
4.
Sensor clip, thermometer bulb
5.
Boiler vessel of stainless
steel with electric cartridge,
insulated
6.
Circulation pump
7.
Electric-shock protection over
electric cartridge cable con-
nections
8.
Bypass with shut-off valves
9.
Flow pipe, ¾" male thread
10. Return connection, ¾" male
thread
11. Collection vessel, waster
water from safety valve
12. Safety valve
13. Electric-shock protection
14. Knockouts for cables, where
these come from the wall
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