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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 208–230 ± 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 controlling and
maintaining of air conditioner.
Table 11-1-1
No.
1
2
3
4
5
6
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
compressor-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.
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.
Description
The OPERATION lamp of the indoor unit flashes when power
source is turned on. If [ ] 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.
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 hightemp.
release control (Release protective operation by temp.-up of
the indoor heat exchanger) or current release control.
FILE NO. SVM-10020