Ramsond RH5Z-48-5X9WM Owner's Manual page 17

Troubleshooting
When troubles occur, please check the following points before contacting a repair company.
Issue
Poor cooling
performance
Possible Causes
The temperature setting may
be higher than ambient
room temperature.
The heat exchanger on the
indoor or outdoor unit is
dirty.
The air lter is dirty.
The air inlet or outlet of
either unit is blocked.
Doors and windows are
open.
Excessive heat is generated
by sunlight.
Too many sources of
heat are in the room
(people, computers,
electronics, etc.)
Refrigerant is low due to a
leak or long-term use.
The SILENCE function is
activated.
Solution
Lower the temperature setting.
Clean the a ected heat exchanger.
Remove the filter and clean it
according to the instructions.
Turn the unit o , remove the obstruction,
and turn the unit back on.
Make sure that all doors and
windows are closed while the unit is
operating.
Close windows and curtains
during periods of high heat or
bright sunshine.
Reduce the amount of heat sources.
Check for leaks, re-seal if
necessary, and top o refrigerant.
The SILENCE function can lower
product performance by reducing
operating frequency. Turn o the
SILENCE function.
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