Troubleshooting - Mitsubishi Electric Mr.SLIM PCH-GAK Manual De Instalación

7. Test run
• Refer to the following tables for details on the check codes. (Wireless remote controller)
[Output pattern A]
Beeper sounds Beep
OPERATION
INDICATOR
lamp blinking
Off
pattern
Approx. 2.5 sec.
Self-check
starts
(Start signal
Number of blinks/beeps in pattern indicates the check
received)
code in the following table (i.e., n=5 for "P5")
[Output pattern A] Errors detected by indoor unit
Wireless remote controller
Beeper sounds/OPERATION
INDICATOR lamp blinks
(Number of times)
1 P1
2 P2, P9
3 P3
4 P4
5 P5
6 P6
8 P8
9 E4, E5
10 —
11 —
No sound E0, E3
No sound E1, E2
• If the unit cannot be operated properly after the test run has been performed, refer to the following table to remove 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 (LED1, 2) provided on the indoor controller, refer to the following table.
LED 1 (power for microcomputer)
LED 2 (power for remote controller)

8. Troubleshooting

• Conduct the trial run as explained before, and confirm hat no condensation drips from the refrigerant or drain pipes.
• Confirm that air is not leaking from the opening between the unit and the grille, or between the grille and the ceiling. Air leakage may cause condensation to drip.
• When the trial run is successfully completed, use the Instruction Manual to explain all the operation procedures to the customer.
Beep Beep Beep Beep
st nd rd th
1 2 3 n
On On On On
0.5 sec. 0.5 sec. 0.5 sec.
0.5 sec.
Wired remote
controller
Check code
Intake sensor error
Pipe (TH2) sensor error
Indoor/Remote controller unit communication error
Drain sensor error
Drain pump error
Freezing/Overheating protection operation
Pipe temperature error/Outdoor unit error
Remote controller signal receiving error
—
—
Remote controller transmission error
Remote controller control board error
Symptom
For about 2 minutes after power-
on
Subsequent to about 2 minutes
after power-on
Beep Beep
st nd
1 2 · · · Repeated
Off On On
Approx. 2.5 sec. 0.5 sec. 0.5 sec.
Number of blinks/beeps in pattern indicates
the check code in the following table
Symptom
• For about 2 minutes after power-on, operation of the remote controller is not pos-
sible due to system start-up. (Correct operation)
• Reverse or open phase wiring for the outdoor unit's power terminal block
• Incorrect wiring between indoor and outdoor units (incorrect polarity 1, 2, 3)
• Remote controller wire short
• Wiring between indoor and outdoor units short
Indicates whether control power is supplied. Make sure that this LED is always lit.
Indicates whether power is supplied to the wired remote controller.
This LED lights only in the case of the main indoor unit.
Remark
Cause
13