209
Error Codes
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REPLACING THE INVERTER
PCB HEAT SINK
Replacing the Inverter PCB Heat Sink
If the inverter PCB is replaced at any time, the heat sink must be replaced.
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unit will overheat and damage the PCB and outdoor unit.
1. Remove inverter PCB by detaching its screws using a JIS screwdriver.
Only use a JIS screwdriver. A standard Phillips screwdriver will damage / strip the inverter PCB screw heads.
2. Wipe off any existing heat sink paste material from the inverter PCB heat sink plate, as well as from the outdoor unit heat sink plate.
Gently scrape off as much heat sink paste material as possible, taking care not to damage the back of the inverter PCB or the outdoor unit
heat sink plate.
3. Evenly apply a coating of silicone-based electronic heat sink paste to the inverter PCB heat plate. Verify all applicable areas of the PCB
heat plate are completely covered.
Do not let foreign matter settle onto the heat sink paste.
4. Reinstall the inverter PCB by reattaching its screws with a JIS screwdriver. Tighten the screws, but
do not overtighten.
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