Mitsubishi Electric City Multi PUMY-SP125VKM User Manual

Check code
Abnormal points and detection methods Causes and checkpoints
AbnormalifTH6detectstobeopen/short.
(Theopen/shortdetectionisdisabledduring10secondsto10minutes
aftercompressorstarts,duringdefrostingoperation,orfor10minutesafter
returningfromthedefrostingoperation.)
Open:−40 [−40°F]orless
Short:90 [162°F]ormoreTH6: Thermistor<Suctionpipe>
Disconnection or contact failure of connectors
Characteristic defect of thermistor
Defective outdoor multi controller circuit board
●Diagnosisofdefectives
MakesuretoturnthepowerOFFbeforeconnecting/disconnecting
anyconnectors,orreplacingboards.
Diagnosis Remedy
5102
(U4)
Suctionpipetemperaturethermistor(TH6)open/short
Theblacksquare(■)indicatesaswitchposition.
<Detected in outdoor unit>
No
Yes
Yes
Yes
No
No
Is there any abnormality such
as a disconnection, looseness or
breakage?
Is the detected resistance normal?
Isthedetectedtemperaturenormal?
Connectthewiring/connectorproperly.
Replaceitincaseofabreakage.
Replacethethermistor.
Replacetheoutdoormulticontrollercircuit
board (Malfunction of thermistor circuit).
No abnormality
(Aconnectorcontactfailureissuspected.)
CheckthewiringandconnectorconnectionofTH6.
Disconnect the connector to check the
resistance of TH6 using a tester.
CheckatemperatureofTH6.
ON
OFF
1 2 3 4 5 6 7 8
SW1 Setting
Display on LED1,2 Unit
:
−99.9–999.9
ThedetectedtemperatureofTH6canbedisplayed
byanoperationofSW1ontheoutdoormulti
controller circuit board.
74
75
OCH668B

Mitsubishi Electric City Multi PUMY-SP125VKM Specifications

General

Series	City Multi
Outdoor Unit Model	PUMY-SP125VKM
Cooling Capacity	12.5 kW
Heating Capacity	14.0 kW
Refrigerant	R410A
Operating Temperature (Cooling)	-5 to 46 °C
Indoor Unit Compatibility	Compatible with various City Multi indoor units
Power Supply	380-415V, 50Hz, 3-Phase
Operating Temperature (Heating)	-15°C to 24°C