Mars PS-121B User Manual

Installation, Operation & Maintenance Manual - PS-121B / PSH-141A
15
Problem Possible Cause Troubleshooting
Faults Diagnosis
15
Unit does not turn
on when pressing
ON/OFF button
P1 Error Code
Reset the temperature
In COOL mode: room
temperature is lower than the
set temperature
The Water Collection Tray is full. Turn off
the unit, drain the water from the Water
Collection Tray and restart the unit.
Exhaust hose is not
connected or is blocked
The unit is low on refrigerant
Temperature setting is too high
The room area is too large
The ground is not level
The windows and doors in the
room are open
There are heat sources inside
the room
This sound is caused by the
flow of refrigerant inside the unit
The air filter is blocked with
dust or animal hair
The air filter is blocked with
dust or animal hair
Turn off the unit and clean the
filter according to instructions
Call a service technician to inspect
the unit and top off refrigerant
Make sure all windows and doors are
closed
Turn off the unit and clean the filter
according to instructions
Remove the heat sources if possible
Place the unit on a flat, level surface
This is normal
Decrease the set temperature
Double-check the cooling area
Turn off the unit, disconnect the
hose, check for blockage and
reconnect the hose
Unit does not cool
well
The unit is noisy and
vibrates too much
The unit makes a
gurgling sound
Please refer to the following form before requesting service:

Mars PS-121B Specifications

General

Brand	Mars
Model	PS-121B
Category	Air Conditioner
Language	English