Mitsubishi Electric PKA-ALA Serie Manuel D'installation page 18

7. Test run
[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.)
Wireless remote controller
Beeper sounds/OPERATION
INDICATOR lamp blinks
(Number of times)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
*1 If the beeper does not sound again after the initial 2 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 3 times continuously "beep, beep, beep (0.4 + 0.4 + 0.4 sec.)" after the initial 2 beeps to confirm the self-check start signal was received, the
specified refrigerant address is incorrect.
• 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 test run, refer to the following table to find the cause.
Wired remote controller
Please Wait
→
Please Wait Error code
Display messages do not appear
even when operation switch is
turned ON (operation lamp does
not light up).
On the wireless remote controller with condition above, following phenomena take place.
• No signals from the remote controller are accepted.
• Operation lamp is blinking.
• The buzzer makes a short ping 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 page 15.
en
17
Wired remote
controller
Check code
E9 Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit)
UP Compressor overcurrent interruption
U3, U4 Open/short of outdoor unit thermistors
UF Compressor overcurrent interruption (When compressor locked)
U2 Abnormal high discharging temperature/49C worked/insufficient refrigerant
U1, Ud Abnormal high pressure (63H worked)/Overheating protection operation
U5 Abnormal temperature of heat sink
U8 Outdoor unit fan protection stop
U6 Compressor overcurrent interruption/Abnormal of power module
U7 Abnormality of super heat due to low discharge temperature
Abnormality such as overvoltage or voltage shortage and abnormal synchro-
U9, UH
nous signal to main circuit/Current sensor error
— —
— —
Others Other errors (Refer to the technical manual for the outdoor unit.)
Symptom
LED 1, 2 (PCB in outdoor unit)
After LED 1, 2 are lighted, LED 2 is turned
For about 3 minutes
off, then only LED 1 is lighted. (Correct
after power-on
operation)
Only LED 1 is lighted.
Subsequent to
about 3 minutes
after power-on
Only LED 1 is lighted.
twice, LED 2 blinks once.
Symptom
• For about 3 minutes after power-on, operation of the remote
controller is not possible due to system start-up. (Correct
operation)
• Connector for the outdoor unit's protection device is not con-
nected.
→
LED 1, 2 blink.
Reverse or open phase wiring for the outdoor unit's power
terminal block (L1, L2, GR)
• Incorrect wiring between indoor and outdoor units (incorrect
→
LED 1 blinks
polarity of S1, S2, S3)
• Remote controller wire short
Remark
For details, check the LED
display of the outdoor controller
board.
Cause