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AMK Solac 11252 DeltaSol_BX.monen.ind
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99
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Level 5
Pump starts for a short moment, switches off, switches
on again, etc.
Temperature difference at
the controller too small?
no
yes
Wrong position of collec-
tor sensors?
yes
Change
∆
Ton and
∆
Toff
correspondingly.
Mount the collector sen-
sor at solar flow (war-
mest collector output);
use immersion sleeve of
the respective collector.
Pump starts up very late.
The temperature diffrence between store and collector
increases enormously during operation; the collector
circuit cannot dissipate the heat.
Collector circuit pump /
changeover valve defec-
tive?
no
yes
Heat exchanger calcified?
yes
Check / replace it
Decalcify it
no
Heat exchanger blocked?
yes
no
Clean it
Heat exchanger too
small?
yes
Replace with correctly
sized one.
no
Plausibility control of
the option tube collec-
tor function, antifreeze
function
Change
∆
Ton and
∆
Toff
correspondingly.
Switch-on temperature
difference
∆
Ton to large?
Minimum limitation active
no
yes
Wrong position of collector
sensors (e. g. flatscrew sen-
sor instead of sensor with
immersion sleeve)?
o.k.
no
Pump is overheated, but no heat transfer from the collec-
tor to the store, flow and return have the same tempera-
ture; perhaps also bubble in the lines.
Air the system; increase
the system pressure to
at least static primary
pressure plus 0,5 bar; if
necessary continue to
increase pressure; switch
the pump off and on for a
short time.
Air in the system?
no
yes
Are valves or non-return
valves defective?
yes
Replace them
9.1
Miscellaneous
Activate tube collector
function if necessary.
yes
o.k.
no