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SDi Decades Extreme Service Manual www.ecoer.com
May. 2023Manufacturer reserves the right to change specifications or designs without notice.
8.7.22 PC 0A (High temperature protection of condenser diagnosis and solution)
Description: When the outdoor pipe temperature is more than 149℉ , the unit stops. It starts again only
when the outdoor pipe temperature is less than 125℉ .
Recommended parts to prepare:
• Connection wires
• Condenser temperature sensor
• Outdoor fan
• Outdoor main PCB
• Refrigerant
Troubleshooting and repair:
Is the condenser temperature
is Higher than 149℉ ?
Yes
Is the resistance of
condenser temp.
.
sensor Normal?
Replace the
temperature sensor
No
No
Is the outdoor ambient
temperature higher than
122℉ /129℉ (tropical models)?
No
Stop the unit
Yes
Is the outdoor unit
ventilation functioning
properly?
Yes
Ensure that the outdoor unit
ventilate is functioning properly
Is the heat exchanger dirty?
No
Clean the heat
exchanger
Yes
Replace outdoor main board.
.
Has the problem been resolved?
No
If the level of refrigerant is
not sufficient,
,
does the
system work after refrigerant
is added?
Check whether the refrigerant
system is functioning normally
Is the outdoor fan running
properly?
Please refer to the solution of
the "fan speed is operating
outside of the normal range"
malfunction.
.
Yes
No
Correct the connectionNo
Yes
Is the connection
between temperature
sensor and PCB in
working order?
Yes
No
No
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