PAR-20MAA
ON/OFF
CENTRALLY CONTROLLED
ERROR CODE
CLOCK
ON
OFF
ßC
CHECK
CHECK MODE
FILTER
TEST RUN
FUNCTION
ßC
1Hr.
NOT AVAILABLE
STAND BY
DEFROST
FILTER
CHECK TEST
TEMP.
TIMER SET
[1] Before test run
The test run can be carried out either from the outdoor unit or the indoor unit.
1. Check list
• After the installation, piping setup,and wiring of the indoor and outdoor units is complete, check that refrigerant is not
leaking, the power and control wires are not loose, and the poles are not reversed.
• Use a 500 V insulation resistance tester to make sure that the resistance between the power terminal and the ground
is 1.0 M or more. If it is less than 1.0 M, do not operate the unit. *Absolutely do not touch the tester to indoor/outdoor
connection terminals S1, S2, and S3. An accident could occur.
• Make sure there is no malfunction in the outdoor unit. (If there is a malfunction, you can diagnose it using LED2 on the
board.)
• Check that the ball valve is fully open on both the liquid and gas ends.
• Check the electrical power phase. If the phase is reversed, the fan may rotate in the wrong direction or stop, or
unusual sounds may be produced.
• Starting at least 12 hours before the test run,send current through the crankcase heater. (If the current is running for
a shorter period of time, damage to the compressor could result.)
• For specific models requiring changing of settings for higher ceilings or selection of power supply ON/OFF capability,
make proper changes referring to the description for Selection of Functions through Remote Controller.
After the above checks are complete, carry out the test run as indicated in the following outline.
[2]
Test run procedures
1. Indoor unit
Operating procedures
(1) Turn on the main power supply
While the room temperature display on the remote controller reads “CENTRALLY CONTROLLED”, the remote
controller is disabled.Turn off the “CENTRALLY CONTROLLED” display before using the remote controller.
(2) Press “TEST RUN” button twice
(A) The ‘TEST RUN’ indicator should light up.
(3) Press
button
Cooling/drying mode : Cool air should start to blow.
Heating mode
: Warm air should start to blow (after a while).
(4) Check the outdoor unit fan for correct running
The outdoor unit features automatic capacity control to provide optimum fan speeds. The fan keeps running at a low
speed to meet the current outside air condition unless it exceeds its available maximum power. Then, in actuality,
the fan may stop or run in the reverse direction depending on the outside air, which does not mean malfunction.
(5) Press the “ON/OFF” button to reset the test run in progress
• The test run will be automatically shut down after two hours in response to the AUTO STOP setting of two hours on
the timer.
• During the test run, the room temperature display shows the indoor unit tubing temperatures.
(A)
(5)
(2)
(3)
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9
TEST RUN
