Sunhome Tech SR1568 User Manual

Operation manual of solar controller SR1568
Page 82 of 87
Pump is overheated, but no heat transfer from the collector to the tank, flow and
return have the same temperature; perhaps also bubbling in the pipes
Air or gas bubbles in the system?
No
Yes
Vent the system; increase the
system pressure to a static
primary pressure of at least
plus 0.5 bar; if necessary
continue to increase pressure;
switch the pump on and off for
a short time.
Is the collector circuit blocked at
the dirt trap?
Clean dirt trap
Pump starts for a short moment, switches off, switches on again, etc.
Temperature difference at the controller
too small?
No
Yes
Change ΔTon and ΔToff
correspondingly.
Plausibility control of the option tube
collector function.
Mount the collector sensor at
solar flow (warmest collector
output); use immersion sleeve
of the respective collector.
Wrong position of collector sensors?
No
Yes
No
OK
Pump starts up very late.
Switch-on temperature difference
ΔTon too large?
No
Yes
Change ΔTon and ΔToff
correspondingly.
Activate tube collector function
if necessary.
Non-ideal position of the collector sensor
(e. g. flat screw sensor instead of sensor
in immersion sleeves).
Yes
O.K

Sunhome Tech SR1568 Specifications

General

Brand	Sunhome Tech
Model	SR1568
Category	Controller
Language	English