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Operation of air conditioner
When power breaker is turned “ON”, the
operation lamp (Green) of the indoor unit
flashes.
Compressor may not operate even if the
room temperature is within range of
compressor-ON.
In Dry and ECONO. 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 controller
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 tempera-
ture.
Description
The OPERATION lamp 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 controller 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.
10-1-3. 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 10-1-1
10-2. Primary Judgment
To diagnose the troubles, use the following methods.
(1) Judgment by flashing LED of indoor unit
(2) Self-diagnosis by service check remote controller
(3) Judgment of trouble by every symptom
Firstly use the method (1) for diagnosis. Then, use the method (2) or (3) to diagnose the details of troubles.