Fujitsu WSYA050ML3 Design & Technical Manual page 107

• Installation frost protection
According to the outdoor temperature, the heating circuit pump and the condenser pump are
switched on although there is no demand for heat.
• Miscellaneous
– Reset to default parameters:
All parameters can be reset to factory settings, except followings: Time and date, User interface,
and all time programs, as well as the operating hours and the various counters.
– Software version:
The software version represents the controller software status at the time when the unit is being
produced. It is printed on the back of the unit. The first two digits represent the software version,
and the third is the revision number (e.g. 01.0).
3-13. Installation configuration functions
Line
6120 Frost protection for the plant
Outdoor Pump
temperature
...-4°C Continuously on
-5...1.5°C Set to on for 10 min, approximate
every 6 hours
1.5°C... Continuously off
On
Periodically on
-6 -5 -4 -3
Line
6205 Reset to default parameters
6220 Software version
Function
Diagram
On
Periodically on
Off
Off
-2 -1 0 1 2 3
Function
- (03-49) -
4
TA °C
3. Function table