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Test Operation, Troubleshooting and Maintenance
Replacement of the 4–way valve
Note: be sure there is no refrigerant inside the system and power supply has been cut off before
replacement.
Steps Image Instructions
1. Remove the
front panel.
• Remove screws at the front panel.
• Loosened screws should be put
together to avoid loss.
• Pull the front panel upwards and then
remove it.
• Properly keep the removed front panel
to avoid from being damaged.
• Note: there are two clasps at each
panel for connecting with side panels.
2. Remove the
electric control box.
• Disconnect electric lines inside and
outside of the electric box.
• Protection measures should be taken
to the internal elements to prevent
them from being damaged.
3. Record the
direction of
the 4–way valve
before de-
soldering. The
multi-system
unit cannot take
other system as a
example.
• Remember installation direction before
replacement.
• Remove coils.
• Wrap it with wet cloth to keep its
complete ness for further analysis.
• Desolder the 4–way valve.
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