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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
11 U9, UH Abnormality such as overvoltage or voltage shortage and abnormal and 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 sig-
nal was received and the OPERATION INDICATOR lamp does not come on, there are no error re-
cords.
*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 ad-
dress 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.
Symptom
Cause
Wired remote controller LED 1, 2 (PCB in
outdoor unit)
PLEASE WAIT For about 2 minutes follow-
ing power-on
After LED 1, 2 are lighted, LED 2 is
turned off, then only LED 1 is ligh-
ted. (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 opera-
tion 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 (in-
correct polarity of S1, S2, S3)
– Remote controller wire short
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
SVZ-KP12,18, 24, 30, 36NA
Specifications are subject to change without notice. 55 © 2022 Mitsubishi Electric US, Inc.
ENGLISH
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