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When attaching the optional drain pan
heater (excluding 2MXLH, 3MXLH models)
WARNING
Do not remove the switch cover unless the power has been turned
off. (Risk of electric shock)
1) Attach the drain pan heater in accordance with the installation manual
included with the drain pan heater.
2) Using a tool such as nippers, cut the jumper (J_DP) on the service
PC-board.
Pump Down Operation
In order to protect the environment, be sure to pump down when relocating or disposing of the unit.
1) Remove the valve caps from liquid stop valve and gas stop valve.
2) Begin forced cooling operation.
3) After 3 to 5 minutes, close the liquid stop valve with a hexagonal
wrench.
4) After 3 to 4 minutes, close the gas stop valve and stop forced
cooling operation.
5) Attach the valve caps once procedures are complete.
Forced cooling operation
WARNING
Do not remove the switch cover unless the power has been turned off. (Risk of electric shock)
1) Turn off the power.
2) Remove the service lid (2 screws).
3) Remove the service PC-board switch cover
(1 screw).
4) Switch SW5 and SW6 to off.
5) Turn the operation mode switch (SW2) to
COOL.
6) Screw the service PC-board switch cover
back on (1 screw).
7) Turn on the power.
8) Push the forced operation switch (SW1)
above the service PC-board cover. (The
operation will start.)
• Forced cooling operation will stop
automatically after about 11 to 15 minutes.
To stop the operation, push the forced
operation switch (SW1).
■
English
Remove
the switch
E
cover
D
2
4
C
1
COOL
3
B
Screw
2
A
1
Forced operation switch (SW1)
Service PC-board
Remove
the switch
E
cover
D
2
4
C
1
COOL
3
B
Screw
2
A
1
Jumper (J_DP)
Close
Gas stop valve
Hexagonal
wrench
Liquid stop
valve
Valve caps
•Switch SW5 and SW6 to off.
ON
Service PC-board
ON
E
D
C
B
A
2
1
4
3
2
1
COOL
HEAT
Operation mode switch (SW2)
•Set to COOL.
COOL
E
D
C
B
A
2
1
4
3
2
1
COOL
HEAT
OFF
2
SW6
1
OFF
4
3
SW5
2
1
HEAT
16
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