–
51
–
1
0
-1-3. Operation Which is not a Trouble
(Program Operation)
For controlling the air conditioner, the program
operations are built in the microcomputer as de-
scribed 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.
1
0
-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.
For any trouble occurred at the outdoor unit side, detailed diagnosis is possible by 5-serial LED on the inverter
P.C. board.
No.
1
2
3
4
5
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 control should
be below the room temperature.
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. 33 rps for 2 minutes and
Max. 57 rps for 2 minutes to 4 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.
1
0
-1. First Confirmation
1
0
-1-1. Confirmation of Power Supply
Confirm that the power breaker operates (ON) nor-
mally.
1
0
-1-2. Confirmation of Power Voltage
Confirm that power voltage is AC 220–240V ± 10%.
If power voltage is not in this range, the unit may not
operate normally.
Table 1
0
-1-1
Summary of Contents for RAS-3M23YACV-E
Page 66: ... 66 10 8 2 P C Board Layout Top View Bottom View ...
Page 80: ... 80 CN600 MCC 758 ...
Page 81: ... 81 MCC 775 ...
