40
2. Product does not operate at all.
(*Refer to Electronic Control Device drawing Schematic diagram.)
PCB Board Operation Check
Items
Content
Remedy
Power Transformer
(Outdoor unit)
-Input Voltage
-Output Voltage
IC2(7812) Output
(Indoor/Outdoor unit)
IC3(7805) Output
(Indoor/Outdoor unit)
IC4(KIA7036, Reset IC)
X01(4MHz)
(Indoor/Outdoor unit)
- _10% Rated voltage. Check the power voltage
- About AC17_3V
+
+
DC +12V
DC +5V
Voltage of Outdoor unit Micom No. 8,
Voltage of Indoor unit Micom No. 43 and soldering
condition
Replace Trans
Replace IC2
Replace IC3
Replace faulty
parts
Turn off Main Power
Turn on Main Power
(After 10 seconds)
Is "beeping" sound made from the Indoor Unit?
Check the supply voltage
*Main power's voltage
*Voltage applied to unit
*Connecting method of Indoor/Outdoor connecting
cable
*Check PWB Ass'y (Outdoor unit)
-Fuse
-Pattern damage
-Varistor (ZNRI)
Check the connection housing for contacting
*Connector related to CN-POWER
*Connector related to CN-FAN
*Connector contacting of Outdoor Fan/Compressor
*Display PWB Ass'y Check
*Connector related to CN-DC/DC
Primarily, the operating condition of Micom is OK.
Check each load (Indoor/Outdoor ) Fan motor,
Compressor, Stepping Motor, and contacting
condition of related connector (including connecting
cable of Indoor/Outdoor Unit.
Yes
NO
Содержание AS0CD09 Series
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Страница 45: ...43 5 When Indoor Fan does not operate ...
Страница 47: ...45 7 When a communication error occurs ...
Страница 48: ...46 8 Indicators in case of connecting error INDOOR ...
Страница 50: ...48 9 Voltage of Connectors according to Indoor Fan speed ...
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Страница 58: ...56 Ω Ω Ω Ω Ω Ω Ω Ω Ω ...
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