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SDi Decades Extreme Service Manual www.ecoer.com
May. 2023Manufacturer reserves the right to change specifications or designs without notice.
8.7.18 PC 45 (Outdoor unit IR chip drive failure) diagnosis and solution
Description: When the IR chip detects its own parameter error, the LED displays the failure code when
power on.
Recommended parts to prepare:
• Inverter module PCB.
Troubleshooting and repair:
Power off,then restart the
unit 2 minutes later.
Replace the inverter module PCB.
Yes
8.7.19 PC 0L (Low ambient temperature protection)
Description: It is a protection function. When compressor is off, outdoor ambient temperature(T4) is lower than -
31℉ for 10s, the AC will stop and display the failure code.
When compressor is on, outdoor ambient temperature(T4) is lower than -40℉ for 10s, the AC will stop and
display the failure code.
When outdoor ambient temperature(T4) is no lower than -26℉ for 10s, the unit will exit protection.
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