SERVICE MANUAL - Alarko Carrier

12-3. Outdoor Unit
No.
Part name
Procedure
Remarks
1
Common
procedure
1. Detachment
1) Stop operation of the air conditioner, and turn
“OFF” the power breaker.
2) Remove the side panel. (Ø4 × 10L 3 pcs.)
3) Remove the cord clamp.
(Ø4 × 14L 5 × 2 = 10 pcs.)
Disconnect the connecting cables and power
cord from the terminals.
4) Remove the upper panel. (Ø4 × 10L 6 pcs.)
5) Remove the front panel. (Ø4 × 10L 3 pcs.)
6) Remove the back panel. (Ø4 × 10L 6 pcs.)
7) Remove the air outlet panel. (Ø4 × 10L 8 pcs.)
Air outlet panel
Fan
guard
4
Front panel
Upper panel
Back panel
Side panel
2 Inverter
assembly
1. Detachment
1) Perform work from item 1) to 5) of 1 .
2) Remove screw (ST1T Ø4 × 10L 1 pc.) of the
upper left part of the inverter cover.
• If removing the inverter cover in this condition,
P.C. board can be checked.
• If there is no space in the upper part of the
upper cabinet, perform work from 6) to 7) of
1 and remove the partition fixing plate
(ST1T Ø4 × 10L 1 pc.).
Be careful to check the inverter because
high-voltage circuit is incorporated in it.
3) Perform discharging by connecting the discharging
resistance (approx. 100Ω 40W) or
plug of soldering iron to , terminals of the
C15 (printed “CAUTION HIGH VOLTAGE” is
attached.) electrolytic capacitor (760µF) on
P.C. board.
Be careful to discharge the capacitor because
the electrolytic capacitor cannot
naturally discharge and voltage remains
according to trouble type in some cases.
Inverter cover
P.C. board
(Soldered surface)
Fixing plate
(Partition)
NOTE
This capacitor is one with mass capacity.
Therefore, it is dangerous that a large spark
generates if short-circuiting between ,
polarity with screwdriver, etc. for discharging.
The holder at upper part.
4) Remove screw (Ø4 × 10L 2 pcs.) fixing the
valve clamping plate/the inverter box, and
fixing the back panel/the inverter box.
5) Remove various lead wires from the holder at
upper part of the inverter box and cut 2 tie-lap
ties binding each lead wires :
6) Pull the inverter box upward.
7) Disconnect connectors of various lead wires.
Tie-lap ties (2 pcs)
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