Solar PST-250 Aero Termo, Operation And Installation Manual

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LCD icons
1. Defrosting
The icon indicates that the defrosting function is enabled. This is an automatic function, the system will
entry or exit the defrosting according to the inner control program. The defrosting parameters cannot be
changed at fieldwork. And the unit does not support manual defrosting control.
2. Fan ventilation
The icon indicates that the fan ventilation function is enabled.
By pressing the “ELEC HEATING" button and hold it for five seconds the fan ventilation function can be
enabled or disabled. If this function is enabled the fan will continue working to ventilate the air, when the
water temperature reaches the set point and unit is standby. If this function is disabled the fan will stop,
when the water temperature reaches the set point and unit is standby.
3. Heating
The icon indicates that the current operation mode is heating. Before the compressor is started up, this
icon keeps flashing, and will change to bright when the compressor is ‘ON’.
4. Hot water available
The icon indicates that the domestic hot water temperature reaches the set point. The hot water is
available for use. Heat pump is standby.
5. Electrical heating
The icon indicates that the electrical heating function is enabled. The electrical heater will work according
to the control program.
6. Key lock
The icon indicates the key lock function is enabled. The keys cannot be operated until this function is
disabled.
7. Left temperature display
The display shows the current downside temperature of the water tank.
If you want to check or adjust the parameter this section will display the relating parameter number. In
case when any malfunction occurs, this section will display the related error code.
8. Right temperature display
The display shows that the current upside temperature of the water tank.
If you want to check or adjust the parameter this section will display the related parameter value.
In case when any malfunction occurs, this section will display the related error code.
9. Clock display
The clock display shows the current time.
When reading or programming the scheduled timer, the clock display shows the action time.
10. Timer ‘ON’
The icon indicates that the timer ‘ON’ function is enabled.
11. Timer ‘OFF’
The icon indicates that the timer ‘OFF’ function is enabled.