Buderus Logamax GB062-24 KDE H V2 Service Manual page 25

8Y
External switching contact triggered.
Step
5. Is external temperature limiter (e.g.
TB1) triggered ?
6. B Switch off the boiler.
Is the bridge in connection terminal
installed ?
7. External temperature limiter is locked or
defect ?
Logamax PLus GB062
Remedy
B Switch off the boiler.
yes:
B Check the reason for the external temperature
limiter triggering and correct it.
Info : Max flow temperature can be adjusted in
servi2E function 1.2b. It should be 5 K below of
external temperature limiter and a d4Yistan2E 2
m from boiler to external temperature limiter.
B Reset the external temperature limiter.
B Switch on the boiler.
8Y ? --> 6.
no: --> 6.
yes: -- > 7.
B Install the bridge.
no:
B Switch on the boiler.
8Y ? --> 7.
B Switch off the boiler.
B Cut the main voltage supply.
B Reset or change the external temperature limiter.
B Switch on the main voltage supply.
B Switch on the boiler.
4
Fault finding
25