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MITSUBISHI ELECTRIC
-CENTRALLY CONTROLLED-
STAND BY
DEFROST
ON
CHECK DRY
COOL
HEAT
CHECK
SET TEMP
TIMER OFF
AUTO STOP
AUTO START
F
HR
F
LOW HIGH
AUTO RETURN
CHECK TEST RUN
POWER
ON/OFF
HEAT
SET
TEMPERATURE
AUTO COOL/DRY
COOLERWARMER
TIMER MODE HOURS
FAN SPEED LOW/HIOGH
AIR
DISCHARGE
UP/DOWN
SWING
STOP
CHECK TEST RUN
<Timer function>
AUTO STOP ·········The air conditioner stops after the set time lapses.
AUTO START ········The air conditioner starts after the set time lapses.
AUTO OFF ············Timer is not active.
<How to operate>
1. Press POWER ON/OFF button.
2. Press TIMER HOURS button to select AUTO STOP or AUTO
START.
3. Press TIMER HOURS button to set desired time.
Time setting is in 1 hour units for up to 24 hours.
Each time HOURS button is pressed, set time increases by 1 hour.
When HOURS button is pressed and held, the set time increases
by 1 hour every 0.5 seconds.
4. To cancel the timer operation, press POWER ON / OFF button.
2-7 Test run
<Before test run>
● After installing, wiring, and piping the indoor and outdoor units, check for refrigerant leakage, looseness in power supply or
control wiring, and mistaken polarity.
● Use a 500-volt megger to check the resistance between the power supply teminal block and ground to make sure that it is
at least 1.0MΩ.
Attention:
Do not use the air conditioner if resistance is less than 1.0MΩ.
This setting will stop the air conditioner in 8 hours.
With the lapes of time, time display changes in 1 hour units, showing remaining time.
<Timer setting example>
2-6 TIMER operation
<How to operate>
1. Turn ON main breaker.
2. Press TEST RUN button twice. “TEST RUN” is displayed on
remote controller.
3. Press COOL / DRY button to check that cool air is being
discharged.
4. Press AIR DISCHARGE UP / DOWN button to check auto
vane operation.
5. Check outdoor fan operation.
6. Check compressor operation referring to the indoor coil
temperature code displayed on the remote controller. (See
next page.)
7. The test run works for 2 hours and stops automatically. To
cancel the test run, press POWER ON / OFF button or
TIMER MODE button.
8. After checking, turn OFF the main breaker.
AUTO STOP
8
HR
Indoor coil temperaure code Display
Displayed during test run
TEST RUN button
MITSUBISHI ELECTRIC
-CENTRALLY CONTROLLED-
STAND BY
DEFROST
ON
CHECK DRY
COOL
HEAT
CHECK
SET TEMP
TIMER OFF
AUTO STOP
AUTO START
F
HR
F
LOW HIGH
AUTO RETURN
CHECK TEST RUN
POWER
ON/OFF
HEAT
SET
TEMPERATURE
AUTO COOL/DRY
COOLERWARMER
TIMER MODE HOURS
FAN SPEED LOW/HIOGH
AIR
DISCHARGE
UP/DOWN
SWING
STOP
CHECK TEST RUN
OC120--2.qxp 24/6/97 12:32 AM Page 42