Mitsubishi Electric PEAD-42AA5, Installation Manual

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9. Test run
9.3. Self-check
 Refer to the installation manual that comes with each remote controller for details.

RF thermostat is not established.
[Output pattern A] Errors detected by indoor unit
[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.)
*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 + 0.4 + 0.4 sec.)” after the initial two beeps to confirm the self-check start signal was
received, the specified refrigerant address is incorrect.
• 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.
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)
IR wireless remote controller
Wired remote controller
RF thermostat
Symptom Remark
Beeper sounds/OPERATION
INDICATOR lamp flashes
(Number of times)
Check code
1 P1 Intake sensor error
2 P2, P9 Pipe (Liquid or 2-phase pipe) sensor error
3 E6, E7 Indoor/outdoor unit communication error
4 P4 Drain sensor error
5 P5 Drain pump error
6 P6 Freezing/Overheating safeguard operation
7 EE Communication error between indoor and outdoor units
8 P8 Pipe temperature error
9 E4 Remote controller signal receiving error
10 – –
11 – –
12 Fb Indoor unit control system error (memory error, etc.)
No sound – – No corresponding
IR wireless remote controller
Wired remote controller
RF thermostat
Symptom Remark
Beeper sounds/OPERATION
INDICATOR lamp flashes
(Number of times)
Check code
1 E9 Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit)
For details, check the LED
display of the outdoor controller
board.
2 UP Compressor overcurrent interruption
3 U3, U4 Open/short of outdoor unit thermistors
4 UF Compressor overcurrent interruption (When compressor locked)
5 U2 Abnormal high discharging temperature/49C worked/insufficient refrigerant
6 U1, Ud Abnormal high pressure (63H worked)/Overheating safeguard operation
7 U5 Abnormal temperature of heat sink
8 U8 Outdoor unit fan protection stop
9 U6 Compressor overcurrent interruption/Abnormal of power module
10 U7 Abnormality of super heat due to low discharge temperature
11 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.)
Symptom
Cause
Wired remote controller LED 1, 2 (PCB in outdoor unit)
PLEASE WAIT
For about 2 minutes
following power-on After LED 1, 2 are lighted, LED 2 is turned off,
then only LED 1 is lighted. (Correct operation)
• For about 2 minutes after power-on, operation of the
remote controller is not possible due to system start-up.
(Correct operation)
PLEASE WAIT

Error code
After about 2 minutes
has expired following
power-on
Only LED 1 is lighted.

LED 1, 2 blink.
• 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)
Display messages do not appear
even when operation switch is
turned ON (operation lamp does
not light up).
Only LED 1 is lighted.

LED 1, 2 blinks twice,
LED 2 blinks once.
• Incorrect wiring between indoor and outdoor units
(incorrect polarity of S1, S2, S3)
• Remote controller wire short
KD79P399H01.book Page 15 Tuesday, July 1, 2014 4:51 PM