Test Run; Grille (Option) Installation; Checking The Remote (Infrared) Signal Reception; Water Drainage Check - Mitsubishi Electric MLZ-KP09NA Installation Manual

4. TEST RUN

4-1. TEST RUN
• Do not operate the unit for long periods at places such as building under
construction. This may cause dust or odor to adhere to the unit.
• Perform test run with the attendance of user, as much as possible.
1) Press the E.O. SW once for COOL, and twice for HEAT operation. Test
run will be performed for 30 minutes. If the left lamp of the operation
indicator blinks every 0.5 seconds, inspect the indoor/outdoor unit
connecting wire for mis-wiring. After the test run, emergency mode
D
(set temperature 75°F (24°C)) will start.
2) To stop operation, press the E.O. SW several times until all LED lamps
turn off. Refer to operating instructions for details.

Checking the remote (infrared) signal reception

Press the OFF/ON button on the remote controller and check that an
electronic sound is heard from the indoor unit. Press the OFF/ON button
again to turn the air conditioner off.
• Once the compressor stops, the restart preventive device operates so
the compressor will not operate for 3 minutes to protect the air condi-
tioner.

Water drainage check

1) Fill the drain pan with about 0.9–1.0 liters of water. (Don't pour water
directly into the drain pump.)
2) Make a test run of the unit (in Cooling mode).
3) Check for water drainage at the outlet of the drainage pipe.
4) Stop the test run. (Don't forget to turn off the power.)
4-2. WATER DRAINAGE CHECK FOR INDOOR
uNIt oNLY
If the wiring work has not been completed, connect terminals S1 and
S2 on the indoor terminal block to a 208/230 V single-phase power
supply.
1) Start the drain pump test run.
• Press the emergency operation switch for 5 seconds (until a beep is
heard) to start the operation of only the drain pump.
• The two operation monitor lamps start blinking.
2) Stop the drain pump test run.
• Press the emergency operation switch again to stop the operation of
the drain pump. Even if you do not stop the drain pump, it will stop
automatically after 15 minutes.
• The operation monitor lamps turn off.
4-3. AUTO RESTART FUNCTION
This product is equipped with an auto restart function. When the power
supply is stopped during operation, such as during blackouts, the function
automatically starts operation in the previous setting once the power sup-
ply is resumed. (Refer to the operating instructions for details.)
4-4. EXPLANATION TO THE USER
• Using the OPERATING INSTRUCTIONS, explain to the user how to
use the air conditioner (how to use the remote controller, how to remove
the air filters, how to remove or put the remote controller in the remote
controller holder, how to clean, precautions for operation, etc.)
• Recommend the user to read the OPERATING INSTRUCTIONS care-
fully.

5. GRILLE (oPtIoN) INstALLAtIoN

Refer to the procedures indicated in the installation manual of the Grille (option).
Cover
Emergency
operation switch
(E.O. SW)
Water bottle
Caution:
• After test run or remote signal reception check, turn off the unit with
the E.O. SW or the remote controller before turning off the power
supply. Not doing so will cause the unit to start operation automati-
cally when power supply is resumed.
to the user
• After installing the unit, make sure to explain the user about auto
restart function.
• If auto restart function is unnecessary, it can be deactivated. Consult
the service representative to deactivate the function. Refer to the
service manual for details.
E.O.
SW
En-10