Specifications

92
2.5 Disposing Of The Unit.
When you need to dispose of the unit, consult your dealer.
If pipes are removed incorrectly, refrigerant (fluorocarbon gas) may blow out and come into contact with
your skin, causing injury. Releasing refrigerant into the atmosphere also damages the environments.
2.6 Maintenance And Inspection.
(1) If the air conditioner is used throughout several seasons, inside can get dirty and eventually reduce the
performance.
(2) Depending upon the conditions of usage, foul odors can be generated and drainage can be
deteriorated due to dust and dirt, etc.
Troubleshooting
Before you ask for repair service, check the following points :
MRT060 ~ 300A/AR
Problem Causes Action
Power failure
Press the [ON/OFF] button after power
restore
Fuse blown or circuit breaker tripped Replace the fuse or reset circuit breaker
It does not run
Power supply wiring incorrect Modify the wiring phase
Filter is filled with dust and dirt Clean the filter
Air flow is low
There are some obstacles at the air
inlet or outlet of the units
Remove the obstacles
Compressor does not
operate in 3 min after
unit is started
The restart-preventing circuit is in
operation for 3 minutes
Wait for a while.
(To protect the compressor, a 3-minutes
restart-preventing circuit is built into the
unit.
Therefore, there are occasions
sometimes when the compressor does
not start running immediately.
There are cases when it does not run for
as long as 3 minutes)
Dirty air filter Clean the air filter
Compressor operate
continuously
Temperature setting too low (for
cooling)
Temperature setting too high (for
heating)
Reset the temperature
No cool air come out
during cooling cycle, or
no hot air come out
during heating cycle
Temperature setting too low (for
cooling)
Temperature setting too high (for
heating)
Set the temperature lower
Set the temperature higher
On heating cycle, air
come out does not
warm enough suddenly
Unit is defrost cycle
Wait for a while (it will be resumed after
defrosting)
Note : Function not included in unit where switch box is field supply.