Sinclair GSH ERB-3 Series, Руководство по обслуживанию

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(5) The temperature sensor at the economizer is used to detect the temperature of the economizer after
throttling via the electrostatic expansion 2. Under the Heating or Hot Water mode, this sensor and that at
the economizer outlet both are used to control the opening angle of the electrostatic expansion valve 2.
Under the Cooling mode, the electrostatic expansion valve 2 is fully closed.
(6) The temperature sensor at the economizer outlet is used to detect the temperature of the outlet of the
economizer. Under the Heating or Hot Water mode, this sensor and that at the economser inlet both are
used to control the opening angle of the electrostatic expansion valve 2. Under the Cooling mode, the
electrostatic expansion valve 2 is fully closed.
(7) The high pressure is detected by the sensor installed at the discharge pipe of the compressor, the low
pressure is detected by the sensor installed at the suction pipe of the compressor, and the enhanced
vapor injection pressure is detected by the sensor installed at the enhanced vapor injection pipe. The
first one is mainly used for high pressure protection, the second one is mainly used to control defrosting,
freeze protection and superheating degree, and all of three are used to together to control the intermediate
pressure ratio of the compressor. When any of these sensors fails, it will be displayed at the controller, all
loads except the water pump of the solar system and the electric heater of the water tank will stop. Among
them, the water pump will stop 120 seconds later than the compressor. Then, the main unit will resume
normal running when this error is eliminated.
Component Range
High pressure sensor 4.5/3.8MPa(gauge)
Low pressure switch (cooling) 0.45/0.55MPa(gauge)
Low pressure switch (heating) 0.1/0.2 MPa(gauge)
(8) The return water temperature of the plate heat exchanger is detected by the sensor installed at the inlet
pipe of the plate heat exchanger, which is mainly used for freeze protection. When this sensor fails, this
error will be displayed at the controller but the unit will resume normal operation.
(9) The supply water temperature of the plate heat exchanger is detected by the sensor installed at the outlet
pipe of the plate heat exchanger, which is mainly used for freeze protection at the water side. When this
sensor fails, this error will be displayed at the controller and the unit will continues to operate.
(10) The optional water temperature is detected by the sensor installed at the outlet pipe of the optional E-heater,
which is mainly used to control the supply water temperature. When this sensor fails, this error will be
displayed at the controller, all loads except the electric heater of the water tank will stop (the 2-way electric
and 3-way electric valves will be closed).
(11) The tempeaure sensor for the vapor line is used to detect the temperature of the vapor refrigerant line.
Under the Cooling mode, it and that for the liquid line together are used to control the opening angle of the
electronic expansion valve 1.
(12) The tempeaure sensor for the liquid line is used to detect the temperature of the liquid refrigerant line.
Under the Cooling mode, it and that for the vapor line together are used to control the opening angle of the
electronic expansion valve 1.
(13) The hi-pressure switch is used to judge the system pressure. When the pressure is too high, this switch
will disconnect and the unit will shut down.
(14) The flow switch of the main unit is mainly used to judge the water flow. When the flow rate is too low, this
switch will be disconnected; all loads except the water tank heater and the water pump of the solar system
will stop. This error will be displayed at the controller and will be unrecoverable. The unit can restart only
when it is repowered on and this error does not be displayed again.
Items from 1~14 listed above are control parameters input by the main unit.
(15) The water tank temperature is detected by sensors immersed inside the water tank. These sensors can
be divided into two groups. Group 1 is used to control the water tank temperature and group 2 is used to
display the water tank temperature. When group 1 fails at the heating mode, this error will be displayed at
the controller, and all loads except the water pump of the main unit will stop. When group 2 fails, this error