Mitsubishi Electric Mr.SLIM PKA-A12GA Manual De Instalación página 14

7. Test run
[Output pattern B]
Wireless remote controller
Beeper sounds/OPERATION
INDICATOR lamp flashes
(Number of times)
Errors detected by unit other than indoor unit (outdoor unit, etc.)
Wired remote
controller
Check code
Symptom
Remark
1 E9 Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit)
2 UP Compressor overcurrent interruption
3 U3, U4 Open/short of outdoor unit thermistors
4 UF Compressor overcurrent interruption (When compressor locked)
5 i U2 Abnormal high discharging temperature/49C worked/insufficient refrigerant
6 i U1, Ud Abnormal high pressure (63H worked)/Overheating safeguard operation
7 i U5 Abnormal temperature of heat sink
For details, check the LED display
8 i U8 Outdoor unit fan safeguard stop of the outdoor controller board.
9 i U6 Compressor overcurrent interruption/Abnormal of power module
10 i U7 Abnormality of super heat due to low discharge temperature
11 i U9, UH Abnormality such as overvoltage or voltage shortage and abnormal synchronous
signal to main circuit/Current sensor error
12 ,- -
13 ,- -
14 Others Other errors (Refer to the technical manual for the outdoor unit.)
"1 If the beeper does not sound again after the initial two beeps to confirm the self-check start signal was received and the OPERATION INDICATOR lamp does not come on,
there are no error records.
*2 If the beeper sounds three times continuously "beep, beep, beep (0.4 4- 0.4 4- 0.4 sec.)" after the initial two beeps to confirm the self-check start signal was received, the
specified refrigerant address is incorrect.
o On wireless remote controller
The continuous buzzer sounds from receiving section of indoor unit.
Blink of operation lamp
On wired remote controller
Check code displayed in the LCD.
If the unit cannot be operated properly after the above test run has been performed, refer to the following table to remove the cause.
Symptom
Wired remote controller
For about 2
minutes following
power-on
PLEASE WAIT
PLEASE WAIT -_ Error code
After about 2
minutes has
expired following
power-on
Display messages do not appear even
when operation switch is turned ON
i (operation lamp does not light up).
LED 1,2 (PCB in outdoor unit)
After LED 1,2 are lighted, LED 2 is turned off,
i then only LED 1 is lighted. (Correct operation)
Only LED 1 is lighted. -_ LED 1,2 blink.
i Only LED 1 is lighted. -_ LED 1 blinks twice,
i LED 2 blinks once.
phenomena takes place.
Cause
For about 2 minutes following power-on, operation of the
remote controller is not possible due to system start-up. (Cor-
rect operation)
Connector for the outdoor unit's protection device is not con-
nected.
Reverse or open phase wiring for the outdoor unit's power
terminal block (L1, L2, GR)
Incorrect wiring between indoor and outdoor units (incorrect
polarity of Sl, S2, $3)
Remote controller wire short
On the wireless remote controller with condition above, followin
No signals from the remote controller are accepted.
OPE lamp is blinking.
The buzzer makes a short pipng sound.
Note:
Operation is not possible for about 30 seconds after cancellation of function selection. (Correct operation)
For description of each LED (LED 1,2, 3) provided on the indoor controller, refer to the following table.
LED 1 (power for microcomputer) Indicates whether control power is supplied. Make sure that this LED is always lit.
LED 2 (power for remote controller) Indicates whether power is supplied to the remote controller. This LED lights only in the case of the
indoor unit which is connected to the outdoor unit refrigerant address "0".
LED 3 (communication between indoor and outdoor units only A-control) Indicates state of communication between the indoor and outdoor units. Make sure that this LED is
always blinking.
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