Troubleshooting Tips - INVENTOR U5MRSL32-18 Benutzerhandbuch

Troubleshooting Tips

When troubles occur, please check the following points before contacting a repair company.
Problem
Power failure
The power switch is off
The fuse is burned out
The unit is
Remote control batteries are
not working
dead
The unit's 3-minute protection
has been activated
Temperature setting may be
higher than the ambient room
temperature
The heat exchanger on the in-
door or outdoor unit is dirty
The air filter is dirty
Poor cooling
The air inlet or outlet of either
performance
unit is blocked
Doors and windows are open
Excessive heat is generated by
sunlight
Low refrigerant due to leak or
long-term use
There's too much or too little
refrigerant in the system
There is air, incompressible gas
or foreign material in the refrig-
The unit
eration system.
starts and
stops fre-
System circuit is blocked
quently
The compressor is broken
The voltage is too high or too
low
The outdoor temperature is
lower than 7°C (44.5°F)
Cold air is entering through
Poor heating
doors and windows
performance
Low refrigerant due to leak or
long-term use
Possible Causes Solution
Wait for the power to be restored
Turn on the power
Replace the fuse
Replace the remote control batteries
Wait three minutes after restarting the unit
Lower the temperature setting
Clean the affected heat exchanger
Remove the filter and clean it according to
instructions
Turn the unit off, remove the obstruction
and turn it back on
Make sure that all doors and windows are
closed while operating the unit
Close windows and curtains during peri-
ods of high heat or bright sunshine
Check for leaks, re-seal if necessary and
top off refrigerant
Check for leaks and recharge the system
with refrigerant
Evacuate and recharge the system with
refrigerant
Determine which circuit is blocked and
replace the malfunctioning piece of equip-
ment
Replace the compressor
Install a manostat to regulate the voltage
Check for leaks and recharge the system
with refrigerant
Make sure that all doors and windows are
closed during use
Check for leaks, re-seal if necessary and
top off refrigerant
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