21
NOTE
Do not use a forced operation in cases other
than test operation because it applies an
excessive load onto the air conditioner.
In case of wired remote controller
1, 5
3
2, 4
ON / OFF
FAN
TEMP.
SWING/FIX
TIME
MODE
VENT
UNIT
SET
CL
FILTER
RESET TEST
TIMER SET
How to execute test operation
• To carry out a fan operation in a single indoor unit, firstly turn off the power supply to the unit. Then short CN72
found on the P.C. board. Once completed turn the power to the unit back on and start the unit in FAN only mode.
Upon completion of the test do not forget to remove the short circuit on CN72.
• Using the remote controller, check the unit is in normal operation. For the operation procedure, refer to the
supplied Owner’s Manual. A forced test operation can be executed in the following procedure under the condition
of thermo.-OFF of room temperature.
In order to prevent the test operation from running continuously, the operation will cease after a period of
60 minutes. The unit will then return back to its original operation.
8
TEST RUN
Before test operation
• Before turning on the power supply, carry out the following
procedures.
1) Using 500V-megger, check there is 1M
Ω
or more between the
terminal block of the power supply and the earth.
If 1M
Ω
or less is detected, do not run the unit.
2) Check that all the valves of the outdoor unit are fully opened.
WARNING
To protect the compressor at
startup. Ensure the power supply
is left on for 12 or more hours
before operation.
• Never push the electromagnetic contactor to carry out a forced test operation.
(It is very dangerous because a protective device does not work.)
TEST
Procedure
1
2
3
4
5
Description
Keep the
TEST
button pushed down for 4 seconds or more.
[TEST] is displayed on the display part and the selection of the test mode is
permitted.
Push
ON / OFF
button.
Using
MODE
button, select the operation mode, [COOL] or [HEAT].
• Do not run the air conditioner in a mode other than [COOL] or [HEAT].
• The temperature controlling function will not work during the test operation.
• Fault detection will perform as usual.
After the test operation, push the
ON / OFF
button to stop the operation.
(Display part is the same as procedure
1
)
Push the
TEST
button to cancel (release from) the test operation mode.
([TEST] disappears on the display part and the status returns to a normal.)
Summary of Contents for MMU-AP0071MH
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