1302
(UE)
Highpressuretrouble
●Diagnosisofdefectives
MakesuretoturnthepowerOFFbeforeconnecting/disconnectinganyconnectors,orreplacingboards.
Diagnosis Remedy
No
Is the voltage normal?
Is it free from any trace of over-
heating or burning?
Replacetheindoorcontrollerboard.
Checkthevoltageandappearanceofthe
indoor controller board.
Check the resistance of SV1.
Chart 3 of 4
For the voltage, refer to "8-6.
HOWTOCHECKTHECOMPONENTS".
No
No
Yes
Yes
Yes
Continuedfromthepreviouspage
Is there a resistance detected?
Is there a resistance detected?
ReplacetheTH7.
ReplacetheindoorLEV.
DisconnecttheindoorLEVwiringtocheck
the resistance.
Continuetothenextpage
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