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Troubleshooting
Tips
Troubleshooting Tips
Problem Possible Causes Solution
Unit does not turn
on when pressing
ON/OFF button
P1 Protection Code
In COOL mode: room
temperature is lower than
the set temperature
Reset the temperature
The Water Collection Tray is full. Turn off the
unit, drain the water from the Water Collection
Tray and restart the unit.
The air filter is blocked with
dust or animal hair
The unit is low on
refrigerant
Temperature setting is too
high
The windows and doors in
the room are open
The room area is too large
Unit does not cool
well
Exhaust hose is not
connected or is blocked
There are heat sources
inside the room
Turn off the unit and clean the filter according
to instructions
Call a service technician to inspect
the unit and top off refrigerant
Decrease the set temperature
Make sure all windows and doors are closed
Double-check the cooling area
Turn off the unit, disconnect the hose, check for
blockage and reconnect the hose
Remove the heat sources if
possible
The unit is noisy
and vibrates too
much
The unit makes a
gurgling sound
The ground is not level Place the unit on a flat, level surface
The air filter is blocked with
dust or animal hair
Turn off the unit and clean the filter according
to instructions
This sound is caused by the
flow of refrigerant inside
the unit
This is normal
Impedance Information
To be in compliance EN 61000-3-11, the product MPPD-14CRN1-QB6 shall be connected only
to a supply of the system impedance: | Zsys|=0.346 ohms or less, the product MPPDB-12HRN1
-QB6G1 shall be connected only to a supply of the system impedance: | Zsys|=0.337 ohms or
less. Before connect the product to public power network, please consult your local power
supply authority to ensure the power network meet above requirement.
To be in compliance EN 61000-3-11, the product MPPDB-12HRN7-QB6G1 shall be connected
only to a supply of the system impedance: | Zsys|=0.348 ohms or less, the product MPPDB-
12CRN7-QB6G1 shall be connected only to a supply of the system impedance: | Zsys|=0.362
ohms or less. Before connect the product to public power network, please consult your local
power supply authority to ensure the power network meet above requirement.
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