Removing The 4-Way Reversing Valve And Coil; Removing The Electronic Expansion Valve Coil - Hisense Hi-Therma Series Service Handbook
Air-to-water heat pump, split/integra outdoor unit, split indoor unit, integra indoor unit, monobloc
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- Installation & maintenance manual (448 pages) ,
- Installation & maintenance manual (372 pages)
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Hi-Therma Split system - Outdoor unit (AHW-044/060/080HCDS1)
2.1.8 Removing the 4-way reversing valve and coil
1. Remove the pipe cover following "2.1.1 Removing the pipe cover".
2. Remove the front cover and upper cover following "2.1.2 Removing the front cover and upper cover".
3. Remove the Side cover and Electrical box cover following "2.1.3 Removing the Side cover and Electrical box cover".
4. Disconnect the PCN6 connector on the O.U. main PCB of the electrical box.
5. Remove 1 fixing screw to remove the 4-way reversing valve coil.
6. After removing the four brazing points as shown in the figure, the 4-way reversing valve can be removed.
2.1.9 Removing the electronic expansion valve coil
1. Remove the pipe cover following "2.1.1 Removing the pipe cover".
2. Remove the front cover and upper cover following "2.1.2 Removing the front cover and upper cover".
3. Remove the Side cover and Electrical box cover following "2.1.3 Removing the Side cover and Electrical box cover".
4. Remove the CN5A connector on the O.U. main PCB of the electrical box.
5. Hold and disconnect the coil of the expansion valve. The expansion valve coil is equipped with a lock mechanism. Ensure
that the coil is locked when replacing,as is shown below.
6. To remove the electronic expansion valve, the electronic expansion valve coil needs to be removed first. After the coil is
removed, disconnect the two brazing points of the electronic expansion valve. Protect the electronic expansion valve to
avoid being burned by flames during the brazing process.
7. When removing the electronic expansion valve coil, it is necessary to rotate and pull out the coil at the same time, and
separate the groove from the fixation protrusion. When installing the electronic expansion valve coil, it is necessary to
push the electronic expansion valve coil onto the electronic expansion valve body, and rotate the coil to fix the groove with
the fixation protrusionat the same time, the sound of the groove and the fixation protrusion mesh will be heard.
!
C A U T I O N
The electronic expansion valve will malfunction if the coil does not fix firmly with the valve body by the groove and the fixation protrusion.
4-way reversing valve coil
Brazing
Fig.2.11
400
4-way reversing valve
Screw
Brazing
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