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11-1. First Confirmation
11-1-1. Confirmation of Power Supply
Confirm that the power breaker operates (ON) normally.
11-1-2. Confirmation of Power Voltage
Confirm that power voltage is AC 220–230–240 ± 10%. If power voltage is not in this range, the unit may not
operate normally.
11-1-3. Operation Which is not a Trouble (Program Operation)
For controlling the air conditioner, the program operations are built in the microcomputer as described in the
following table. If a claim is made for running operation, check whether or not it meets to the contents in the
following table. When it does, we inform you that it is not trouble of equipment, but it is indispensable for control-
ling and maintaining of air conditioner.
Table 11-1-1
Description
The OPERATION indicator of the indoor unit flashes
when power source is turned on. If [START/STOP] button
is operated once, flashing stops. (Flashes also in power
failure)
The compressor does not operate while compressor
restart delay timer (3-minutes timer) operates.
The same phenomenon is found after power source has
been turned on because 3-minutes timer operates.
The air flow indication is fixed to [AUTO].
For smooth operation of the compressor, the compressor
motor speed is restricted to Max. 41 rps for 2 minutes,
and Max.91 rps for 2 minutes to 3 minutes, respectively
after the operation has started.
If the set value is above the room temperature, Cooling
operation is not performed. And check whether battery of
the remote control is consumed or not.
After selecting Cool or Heat mode, select an operation
mode again if the compressor keeps stop status for 15
minutes.
The compressor motor speed may decrease by high-
temp. release control (Release protective operation by
temp.-up of the indoor heat exchanger) or current release
control.
When the unit in other room operates previously in
different mode, Fan Only operation is performed because
of first-push priority control. (Cool operation and Dry
operation can be concurrently performed.)
Operation of air conditioner
When power breaker is turned “ON”, the
OPERATION indicator (Green) of the indoor
unit flashes.
Compressor may not operate even if the
room temperature is within range of com-
pressor-ON.
In Dry and ECO mode, FAN (air flow)
display does not change even though FAN
(air flow select) button is operated.
Increasing of compressor motor speed
stops approx. 30 seconds after operation
started, and then compressor motor speed
increases again approx. 30 seconds after.
The set value of the remote control should
be below the room temperature.
In AUTO mode, the operation mode is
changed.
In HEAT mode, the compressor motor
speed does not increase up to the maxi-
mum speed or decreases before the
temperature arrives at the set temperature.
Cool, Dry, or Heat operation cannot be
performed.