7 181 465 347 (01.07)
Rectifying faults
15
Loose or broken contact on
heat store NTC sensor
XX 39
Specified CH flow tempera-
ture from TA... programmer
exceeded
XX 40
Programmer faults
TR 2
Page
Set room temperature not
reached
X41
Set room temperature
exceeded by large amount
X43
Set room temperature not
reached
41
Temperature rises instead of
falling
X43
Room temperature too high in
Economy mode
X43
Incorrect or no modulation X 43
Heat store fails to heat up 44
Table 4
Appliance faults
ZBR ... A
ZSBR ... A
ZWBR ...A
Page
Table 3
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