Mitsubishi Electric City Multi PUMY-SP112VKM User Manual

Check code
4210
(UP)
Compressorovercurrentinterruption
●Diagnosisofdefectives
MakesuretoturnthepowerOFFbeforeconnecting/disconnectinganyconnectors,orreplacingboards.
Diagnosis Remedy
Chart 2 of 2
No
Yes
Yes
No
Yes
Yes
No
Yes
No
No
Aretheyconnectedproperly?
Connectthecompressorwiring(U,Vand
Wphase)properly,thenturnthepower
back ON.
Continuedfromthepreviouspage
Doesitoperatenormally?
Are those units short-cycled?
Arethevoltageamongthephases
U-V,V-WandW-Udifferent?
Doesitoperatenormally?
Check the DC fan motor.
Remove factor(s) causing the short-cycle.
Replacethecompressor.
Replacetheoutdoorpowercircuitboard.
Complete
Checktheoperationofindoor/outdoorfan
motors.
Check for indoor/outdoor short-cycle.
Disconnectthecompressorwiringfromtheoutdoor
powercircuitboard,thencheckthevoltageamong
eachphasesU,VandWduringtestrun(SW7-1ON).
Makesuretoperformavoltage
checkwiththesameperforming
frequencies.
Replacetheoutdoormulticontrollercircuit
board.
(short-cycled)
(no short-cycled)
67
OCH668B

Mitsubishi Electric City Multi PUMY-SP112VKM Specifications

General

Brand	Mitsubishi Electric
Model	City Multi PUMY-SP112VKM
Category	Air Conditioner
Language	English