Mitsubishi 1887874 30000 BTU Triple-Zone Mini Split System 12+12+12 with Ceiling Cassette Indoor Unit, 18 SEER, 12.5 EER, DC Inverter Technology, AHRI Certified, cETLus Certification, H2i Hyper Heating Technology

User Manual - Page 15

For 1887874.

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15
8. Testrun
Step5 Stopthetestrun.
1Pressthe[ON/OFF]buttontostopthetestrun.(TheTestrunmenuwillappear.)
Note:Ifanerrorisdisplayedontheremotecontroller,seethetablebelow.
[OutputpatternA] Errorsdetectedbyindoorunit
Wirelessremotecontroller
Wiredremote
controller
Symptom Remark
Beepersounds/OPERATION
INDICATORlampblinks(Num-
beroftimes)
Check code
1 P1 Intake sensor error
2
P2 Pipe(TH2)sensorerror
P9 Pipe(TH5)sensorerror
3 E6,E7 Indoor/outdoorunitcommunicationerror
4 P4 Drainsensorerror/Floatswitchconnectoropen
5
P5 Drain pump error
PA Forced compressor error
6 P6 Freezing/Overheatingprotectionoperation
7 EE Communication error between indoor and outdoor units
8 P8 Pipetemperatureerror
9 E4 Remotecontrollersignalreceivingerror
10
11 PB(Pb) Indoor unit fan motor error
12 FB(Fb) Indoorunitcontrolsystemerror(memoryerror,etc.)
14 PL Refrigerant circuit abnormal
No sound E0,E3 Remote controller transmission error
No sound E1,E2 Remote controller control board error
No sound – – – – No corresponding
[OutputpatternB] Errorsdetectedbyunitotherthanindoorunit(outdoorunit,etc.)
Wirelessremotecontroller
Wiredremote
controller
Symptom Remark
Beepersounds/OPERATION
INDICATORlampblinks(Num-
ber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
14 PLorOthers
Abnormalityofrefrigerantcircuitorothererrors
*1Ifthebeeperdoesnotsoundagainaftertheinitial2beepstoconrm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3timescontinuously“beep,beep,beep(0.4+0.4+0.4sec.)”aftertheinitial2beepstoconrmtheself-checkstartsignalwasreceived,thespeci-
edrefrigerantaddressisincorrect.
• Onwirelessremotecontroller
Thecontinuousbuzzersoundsfromreceivingsectionofindoorunit.
Blink of operation lamp
• Onwiredremotecontroller
Check code displayed in the LCD.
• Refertothefollowingtablesfordetailsonthecheckcodes.(Wirelessremotecontroller)
OPERATIONIN-
DICATOR lamp
blinking pattern
Beep Beep Beep Beep Beep Beep Beep
Off
Approx.2.5sec.
On
Approx.3sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
Off
Approx.2.5sec.
On
Approx.3sec.
On
0.5 sec.
On
0.5 sec.
···Repeated
Number of blinks/beeps in pattern indicates the check
codeinthefollowingtable(i.e.,n=5for“U2”)
Numberofblinks/beepsinpatternindicatesthe
check code in the following table
n
th
1
st
2
nd
3
rd
1
st
2
nd
Self-check
starts
(Startsignal
received)
Beeper sounds
[OutputpatternB]
OPERATIONIN-
DICATOR lamp
blinking pattern
Beep
Beep Beep Beep Beep Beep Beep
Off
Approx.2.5sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
Off
Approx.2.5sec.
On
0.5 sec.
On
0.5 sec.
···Repeated
Number of blinks/beeps in pattern indicates the check
codeinthefollowingtable(i.e.,n=5for“P5”)
Numberofblinks/beepsinpatternindicatesthe
check code in the following table
n
th
1
st
2
nd
3
rd
1
st
2
nd
Self-check
starts
(Startsignal
received)
Beeper sounds
[OutputpatternA]
SeethetablebelowforthedetailsoftheLEDdisplay(LED1,2,and3)ontheindoorcontrollerboard.
LED1(microcomputerpowersupply) Indicateswhethercontrolpowerissupplied.MakesurethatthisLEDisalwayslit.
LED2(remotecontrollerpowersupply)
Indicates whether power is supplied to the wired remote controller. The LED is lit only for the indoor unit that is connected
to the outdoor unit that has an address of 0.
LED3(indoor/outdoorunitcommunication) Indicateswhethertheindoorandoutdoorunitsarecommunicating.MakesurethatthisLEDisalwaysblinking.
Note:
Iftheunitisoperatedcontinuouslyduringatestrun,theunitstopsafter2hours.
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