Service manual

Compressor and outdoor fan do not operate (Only indoor fan operates)
MS-OSDW-
I
Press EMERGENCY ON/OFF button.
3 min. timedelay function operates.
Test
mode operates for 30 min.
I
i
I Replace Indoor ektrork control P. C. board. 1
isthere 115~~~bennreen&l -aof No +
outdoor terminal bed 7
1
Turn on outdoor
Power ~pph/.
Check resistance of room temp. thermistor RT11.
No
b
See the thermistor resistance on page 38.
Replace Room temp.
thermistor RTl1.
Yes
Yes
t 1
Check voltage to contactor 52C.
No
Isthere12VDCbeMreenUJ-C[]of -P
outdoor terminal bed 7
Check Contactor 52C.
If no good repiace
Contactor 52C.
I No
Isthere 12V DC between m+l - @-I of
Yes
indoor temdnal
bed 7
b
Check continuity of
indoor and outdoor unit
connection.
;
No