Rectify interference
6 720 643 196
(2010/02)
13
2.3.6
High temperature difference heating system
water
Description: The temperature difference between T8 and T9 is greater than X, where X is calculated as a linear
function of the compressor frequency. 20Hz=10K and 90Hz=18K.
Check
Action
1.
B
Clean the dirt filter on the hot side.
B
Remove the filter basket and clean it.
Does the error message recur?
Æ
2
2.
B
Go to temperatures and check the
value on T8 and T9.
B
Use a digital thermometer and meas-
ure at the sensor.
Do the values correspond?
yes:
Æ
3
no:
B
Check the sensors and replace if necessary.
Does the error message recur?
Æ
4
3.
B
Check the flow in the heating system.
B
Check that the thermostat valves are open.
Does the error message recur?
Æ
4
4.
The heating system is not sufficiently
large for the relevant heat pump.
B
Expand the system volume (volume tank or several
radiators).
Tab. 6
6 720 643 196-05.1I
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 ...
Page 27: ...6 720 643 196 2010 02 27 ...
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