Resol DeltaSol E User Manual

Pump starts for a short moment, switches-off, switches-
on again, etc.
Temperature difference
at the controller too
small?
no yes
Wrong position of col-
lector sensors?
yes
Change DTon and DToff
correspondingly..
Mount the collector sen-
sor at solar ow (warm-
est 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 cir-
cuit cannot dissipate the heat.
Collector circuit pump
defective?
no yes
Heat exchanger calcied?
yes
check / replace it
Decalcify it
no
Heat exchanger blocked?
yesno
Clean it
Heat exchanger too
small?
yes
Repalce with correctly
sized one.
no
Plausibility control of the
option tube collector
special function
Change DTon and DToff
correspondingly.
Switch-on temperature
difference DTon to large?
no yes
Non-ideal position of
the collector sensor (e.g.
atscrew sensor instead
of sensor in immersion
sleeves)?
o.k.no
Pump is overheated, but no heat transfer from the collec-
tor to the store, ow 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
Is the collector circuit
blocked at the dirt trap?
yes
Clean the dirt trap
Activate tube collector
function if necessary.
yes
o.k.
DeltaSol
®
E
© RESOL 20160310 DeltaSol_E_V2.monen.indd
| 44

Resol DeltaSol E Specifications

General

Brand	Resol
Model	DeltaSol E
Category	Controller
Language	English