Mitsubishi Electric PAA-A18AA1 Manual De Mantenimiento página 43

Wired remote controller
Check code
P1 5101
P2, P9 5102, 5105
E6, E7 6840
P4 2502
P5 5701
P6 1501
EE -
P8 1503
E4 6834
Fb 4109
[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.)
Check code
E9 Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit)
UP Compressor overcurrent interruption
U3, U4 Open/short of outdoor unit thermistors
UF Compressor overcurrent interruption (when compressor locked)
U2 Abnormal high discharging temperature/49C worked/ Insufficient refrigerant
U1, Ud Abnormal high pressure (63H worked)/Overheating safeguard operation
U5 Abnormal temperature of heat sink
U8 Outdoor unit fan protection stop
U6 Compressor overcurrent interruption/Abnormal of power module
U7 Abnormality of super heat due to low discharge temperature
U9, UH Abnormality such as overvoltage or voltage shortage and abnormal and synchronous
signal to main circuit/Current sensor error
others Other errors (refer to the technical manual for the outdoor unit.)
• 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.
Specifications are subject to change without notice.
PAA-A18, 24, 30, 36, 42AA1/BA1/CA1 and all-
[Output pattern A] Errors detected by indoor unit
Pipe (Liquid or 2-phase pipe) sensor error
Indoor/outdoor unit communication error
Freezing/Overheating safeguard operation
Communication error between indoor and outdoor units
Remote controller signal receiving error
Indoor unit control system error (memory error, etc.)
43
Symptom
Intake sensor error
Drain sensor error
Drain pump error
Pipe temperature error
Symptom
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