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(3)
Compressor and outdoor fan do not
operate (Only
indoor fan operates)
Start
Press EMERGENCY
ON/
OFF button.
3
min.
time-delay function
operates.
Test
mode operates for 30 min.
Is
there
230V
AC between
ITiJ -
04:J
on
outdoor
terminal block?
Yes
Check voltage to
contactor
52C
.
Is there 12V
DC between
[I]
t •
1 -
[Z]
1-
1
of
outdoor terminal block ?
No
Is there 12V
DC
between
iI)C
•
1 -
[Zll
-
1
of
indoor
terminal block ?
No
Check
resistance
of room temp. thermistor RT11
.
See
the
thermistor
resistance on
page
40.
Yes
Replace
Indoor electronic control
P.
C. board
.
No
Yes
Yes
No
Turn on outdoor
power supply.
Check
Contactor
52C
.
If defective replace.
Check continuity of
indoor and outdoor
unit
control wiring.
Replace Room temp
.
thermistor
RT 11
.
34
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