Indoor Installation Manual

15.3. Self-check
Refer to the installation manual that comes with each remote controller for details.
RF thermostat is not established.
15.3.1. [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
15.3.2. [Output pattern B] Errors detected by unit other than indoor unit (out-
door unit, etc.)
IR wireless remote
controller
Beeper sounds/
OPERATION
INDICATOR lamp
flashes
(Number of times)
Symptom
Re-
mark
Beeper sounds/
OPERATION
INDICATOR lamp flashes
(Number of times)
Check code
1 E9 Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit)
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
SVZ-KP12,18, 24, 30, 36NA
© 2022 Mitsubishi Electric US, Inc. 54 Specifications are subject to change without notice.
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