Rectify interference
6 720 643 196 (2010/02)
18
2.3.12 Electric element fault
2.3.13 Heat pump now working at max. permitted
temp. (T8)
2.3.14 Electric element now working at max. permit-
ted temp. (T8)
Description: Electric element fault Reset on the overheat protection and must be acknowledged in the display.
Check
Action
1.
B
Check the supply to the electrical
additional heat (measured on the AHB
circuit board terminals).
Is it OK?
yes:
Æ
2
no:
B
Check the wiring in the heat pump.
2.
B
Try to reset the overheat protection
again.
Was it successful?
yes:
Does the error message recur?
Æ
3
no:
Æ
3
3.
Overheat protection electric element
defective.
B
Replace the AHB board.
Tab. 12
6 720 643 196-10.1I
Description: Value on T8 has exceeded 65 °C.
See fault tracing tree High forward flow
T1. (
Æ
Tab. 13
6 720 643 196-11.1I
Description: Value on T8 has exceeded 75 °C.
See fault tracing tree High forward flow
T1. (
Æ
(Can only occur during additional heat operation).
Tab. 14
6 720 643 196-12.1I
Summary of Contents for X Series
Page 1: ...Fault tracing tree X11 X15 6 720 619 265 18 1I 6 720 643 196 2010 02 ...
Page 26: ...6 720 643 196 2010 02 26 Notes ...
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