R410A All DC Inverter Mini VRF MCAC-VTSM-2016-02
76 Troubleshooting
5.13 P5: Condenser high temperature protection
When condenser temperature is higher than 62 degrees for 3 seconds, the unit will stop operating.
When pipe temperature outside is lower than 52 degrees, the unit will resume operate.
LED displays P5
Condenser T3 high temperature protection
Check whether condenser temperature is higher than
62 degrees for 3 seconds.
NO
Check whether the resistance of condenser
temperature sensor is correct.
YES
Replace the outdoor main PCB.
NO
Replace the temperature sensor
YES
Whether outdoor temperature is too high(higher than 43
degrees)or not.
Replace outdoor PCB.
NO
Whether heat exchanger needs cleaning.
Clean the heat exchanger
NO
If refrigerant pipe is blocked or not?
Clean heat exchanger
YES
YES
Remove the refrigerant pipe and then
use high pressure nitrogen or
refrigerant
to
blow
the
pipe.
Vacuumed the pipe then add the
refrigerant again.
YES
Stop the unit
NO
Содержание MDV-120W/DON1
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