Mitsubishi Electric Mr.SLIM PEAD-A12AA7, Руководство по обслуживанию

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HWE16080
TROUBLESHOOTING
10-2. SELF-CHECK FUNCTION
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Refer to the installation manual that comes with each remote controller for details.
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RF thermostat is not established.
[Output pattern A] Errors detected by indoor unit
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
[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.)
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.)
*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.
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On IR wireless remote controller
The continuous buzzer sounds from receiving section of indoor unit.
Blink of operation lamp
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On wired remote controller
Check code displayed on the LCD.