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Menu “6. Protective functions” can be used to
activate and set various protective functions.
The menu is closed by pressing “esc” or select-
ing “Exit settings”.
Caution
This function causes energy to be lost via the collector! It is normally not activated
for solar systems with antifreeze.
Observe the operating instructions for the other system components!
Protective functions
6. Protective functions
If the seizing protection is activated, then the controller switches the relay in question and the
connected consumer on every day at 12:00 and on Sundays at 12:00 for 5 seconds in order to
prevent the pump and/or the valve from sticking after an extended stationary period.
Setting range R1: daily, weekly, off/default setting: Off
Setting range R2: daily, weekly, off/default setting: Off
A two-stage frost protection function can be activated. In stage 1 the controller switches the
pump on for 1 minute every hour if the collector temperature drops below the set value “Frost
stage 1”.
If the collector temperature drops further to the set value “Frost stage 2” the controller switches
the pump on continuously.
If the collector temperature then exceeds the value “Frost stage 2” by 2°C, then the pump
switches off again.
Frost protection setting range: on, off/default setting: off
Frost stage 1 setting range: from -25°C to 10°C or off/default setting: 7°C
Frost stage 2 setting range: from -25°C to 8°C/default setting: 5°C
6.1 Seizing protection
6.2 Frost protection
Caution
This does not under any circumstances
replace the safety facilities to be
provided by the customer!
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