OUT-90
DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting
Multi Liberty
DC Inverter
Protection for outdoor low temperature, in Heating mode
If outdoor temperature keeps lower than -15°C for more than 1 hour, system is stopped.
The system will be restarted if outdoor temperature keeps higher than -12°C for more than 10 minutes and
compressor has been stopped for more than 1 hour, or if outdoor temperature keeps higher than 5°C for more
than 10 minutes.
P 5
Outline of protection function
• Troubleshooting flowcharts, referred to Protection Codes displayed on Outdoor Unit:
Protection Code on Outdoor Unit
The display shows “P5”.
Considering
temperature,
does
resistance of temperature sensor T3
correspond to the values indicated on
R-T Tables (see further on, in this
Section of Service Manual)?
Replace Outdoor Unit’s main PCB.
Outdoor temperature conditions are
beyond system’s operation range.
Replace temperature sensor T3.
YES
NO
NO
YES
Is outdoor temperature lower than
-15°C?