Self-Check Function, Function Table - Mitsubishi Electric TRANE NTXAMT12A112AA Service Manual

12.2. Self-check function, Function Table

• 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
IR wireless remote controller Wired remote controller
Beeper sounds/OPERATION
INDICATOR lamp flashes
(Number of times)
1 P1
2 P2, P9
3 E6, E7
4 P4
5 P5
6 P6
7 EE
8 P8
9 E4
10 –
11 PB
12 Fb
No sound ––
[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.)
IR wireless re- Wired remote
mote controller controller
RF thermostat
Beeper sounds/ Check code
OPERATION
INDICATOR lamp
flashes
(Number of
times)
1 E9
2 UP
3 U3, U4
4 UF
5 U2
6 U1, Ud
7 U5
8 U8
Specifications are subject to change without notice.
NTXAMT12, 18, 24, 30, 36A112AA
RF thermostat
Check code
Intake sensor error
Pipe (Liquid or 2-phase pipe) sensor error
Indoor/outdoor unit communication error
Drain sensor error
Drain pump error
Freezing/Overheating safeguard operation
Communication error between indoor and outdoor units
Pipe temperature error
Remote controller signal receiving error
–
Fan motor error
Indoor unit control system error (memory error, etc.)
No corresponding
Symptom
Indoor/outdoor unit communication error (Transmitting
error) (Outdoor unit)
Compressor overcurrent interruption
Open/short of outdoor unit thermistors
Compressor overcurrent interruption (When compressor
locked)
Abnormal high discharging temperature/49˚ C worked/
insufficient refrigerant
Abnormal high pressure (63H worked)/ Overheating safe-
guard operation
Abnormal temperature of heat sink
Outdoor unit fan protection stop
41
Symptom Remark
For details, check the LED display of the outdoor controller
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Remark
board.