Compressor And Outdoor Fan Do Not Operate - Mitsubishi Electric MS09EW Service & Parts Manual

Compressor and outdoor fan do not operate (Only indoor fan operates)
Press EMERGENCY ON/OFF bunon
3 min . time-delay function operates.
Test mode operates for 30 min.
MS12/15EN
Is there 230V AC between
-
a
on
outdoor terminal block ?
No
L
Tum on outdoor
MSOSEW power supply.
Is there 1 15V AC between -
m.
Yes
Check voltage to contactor 52C
Yes
Is there 1 2V DC between
(
+
'
-
2
- 1
of
c
Check Contactor 52C
outdoor term~nal block TB2
7
If defectwe replace.
*
No
is there 12V DC between.li(+)
-
2 1 1 - 1
of
Yes
Check cont~nu~ty of
Indoor term~nal block TB2 ?
L ~ndoor and outdoor untt
control wiring.
J
Replace the power P. C. board.
Check resistance of room temp. thermistor RT1 1.
NO
e
Replace Room temp.
See the thermistor resistance on page 37. thermistor RT11.
i
Yes
Is there 12V DC between CN 1 0 2 0 -
-
@
+
NO
on the Indoor electronic control P.C. board ?
* Replace the indoor electronic
control P.C. board
Yes