Easy Maintenance Function - Mitsubishi Electric Mr.Slim PEAD-A09AA7 Installation Manual

9. Test run
• On IR wireless remote controller
The continuous buzzer sounds from receiving section of indoor unit.
Blink of operation lamp
• On wired remote controller
Check code displayed on 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.
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 IR wireless remote controller with conditions above, following phenomena takes place.
• No signals from the remote controller are accepted.
• OPE 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)
9.4. AUTO RESTART FUNCTION
Indoor controller board
This model is equipped with the AUTO RESTART FUNCTION.
When the indoor unit is controlled with the remote controller, the operation mode, set temperature, and the fan speed are memorized by the indoor controller board. The auto
restart function sets to work the moment the power has restored after power failure, then, the unit will restart automatically.
Set the AUTO RESTART FUNCTION using the remote controller. (Mode no.01)

10. Easy maintenance function

Maintenance data, such as the indoor/outdoor unit's heat exchanger temperature and compressor operation current can be displayed with "Smooth maintenance".
* This cannot be executed during test operation.
* Depending on the combination with the outdoor unit, this may not be supported by some models.
1 [Fig. 10-0-1] (P.8)
• Select "Service" from the Main menu, and press the [SELECT] button.
• Select "Check" with the [F1] or [F2] button, and press the [SELECT] button.
• Select "Smooth maintenance" with the [F1] or [F2] button, and press the [SELECT] button.
2 [Fig. 10-0-2] (P.8)
Select each item.
• Select the item to be changed with the [F1] or [F2] button.
• Select the required setting with the [F3] or [F4] button.
"Ref. address" setting .......... "0"-"15"
"Stable mode" setting........... "Cool" / "Heat" / "Normal"
• Press the [SELECT] button, fixed operation will start.
* Stable mode will take approx. 20 minutes.
3 [Fig. 10-0-3] (P.8)
The operation data will appear.
The Compressor-Accumulated operating (COMP. run) time is 10-hour unit, and the Compressor-Number of operation times (COMP. On/Off) is a 100-time unit (fractions
discarded).
Navigating through the screens
• To go back to the Main menu............[MENU] button
• To return to the previous screen.........[RETURN] button
18
Symptom
LED 1, 2 (PCB in outdoor unit)
For about 2 minutes After LED 1, 2 are lighted, LED 2 is turned off,
following power-on then only LED 1 is lighted. (Correct operation)
Only LED 1 is lighted.  LED 1, 2 blink.
After about 2 minutes
has expired following
power-on
Only LED 1 is lighted.  LED 1, 2 blinks twice,
LED 2 blinks once.
Cause
• For about 2 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
connected.
• Reverse or open phase wiring for the outdoor unit's power
terminal block (L1, L2, L3)
• Incorrect wiring between indoor and outdoor units
(incorrect polarity of S1, S2, S3)
• Remote controller wire short