Buderus Logamax GB062-24 KDE H V2, Руководство по обслуживанию

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4
Fault finding
Logamax PLus GB062 17
4.3 Faults and possible remedy steps
CL
Hot water temperature sensor (DHW-NTC) is faulty.
Step Remedy
1. Check the hot water temperature sensor for
breaks or short CLcircuits.
B Switch off the boiler.
B Remove the Socket of NTC.
B
Measure the electrical resistance of DHW-
NTC (in
Ω
) (see NTC tables).
Is the resistance value correct ?
yes: --> 2.
no: B Change the Sensor.
B
Switch on the boiler.
CL on display ?
-->2.
2.
B
Switch off the boiler.
B
Cut the main voltage supply.
B Check the soft code via Service function
E.1.
Is the code correct ?
yes
B
Switch on the boiler.
CL on display ?
-->3.
no:
B
Correct the right boiler type co5Lde.
CL on display ?
-->3.
3. Check the cables for damages.
B Switch off the boiler.
B
In case of DHW-NTC is changed :
- Remove the NTC socket.
- Measure the NTC resistance.
- Connect the socket again.
B Remove the big socket (20 Pole) on PCB.
B
Measure the NTC resistance (
Ω
) on big
socket (PCB side).
Are measured resistance values on NTC
and socket side different ?
yes:
B
Change the cable haarness.
B Switch on the boiler.
CL on display ?
-->4.
no: --> 4.
4. Electronic board (PCB) is defect.
B
Switch off the boiler.
B Cut the main voltage supply.
B
Change the electronic board (PCB).
B
Switch on the main voltage supply.
B Switch on the boiler.
B
END