Protection Control; Control Panel; General - Sinclair S therm Series Service Manual

2.10 Protection Control

(1) Compressor Low-pressure Protection
When it is detected continuously that pressure at the low side is too low, then low-pressure protection will
occur and this error will be displayed at the controller, all loads act as per the shutdown sequence. This error is
unrecoverable and can be cleared unless repowered on.
(2) High Discharge Temperature Protection
When it is detected continuously that the discharge temperature is higher than the recoverable temperature,
the electrostatic expansion valve will turn to the maximum opening angle with large step until the discharge
temperature is lower than the recoverable temperature. However, if this condition remains, the compressor will
restrict the frequency output or lower its frequency three times. At any time, if it is detected that the discharge
temperature is higher than the set point for protection for three seconds, the compressor will stop and the unit
comes into high discharge temperature protection.
(3) Compressor Hi-pressure Protection
In any case, when it is detected that the high-pressure switch acts, the unit will come into high-pressure
protection three seconds later. This protection is unrecoverable.
(4) Flow Switch Protection
In any case, when it is detected that the flow switch of the main unit disconnects, then all loads except the
water pump of the solar system and the auxiliary electric heater of the water tank will stop. This protection is
unrecoverable. The unit is allowed to be restart only after this error is cleared and the unit is repowered on.
(5) Communication Error
When the indoor unit main board or drive board does not receive correctly any data from the unit main board, all
loads will stop.

3 Control Panel

3.1 General

This display panel uses the capacitor touch screen for input operation. The valid touching area indicates the
black rectangle when the display panel lights off.
This control panel is of high sensitivity and will response to unexpected click by the foreign matters on the
display panel. Therefore, please keep it clean during operation.
This is a generous-purpose controller, whose control functions might not be completely the same as those of the
actually purchased. As the control program will update, the control function will also be updated.
3.1.1 Home Page
Icon Description
Space heating
Space cooling
Icon
Outdoor temperature
Leaving water temperature of the main unit, leaving water
temperature of the auxiliary electric heater, remote room temperature
68
Description