Midea MRCT-075CWN1-D(C) Technical & Service Manual page 76

Midea R410A Tropical ClimaCreator Series Rooftop Package 220V 3Ph 60Hz
Continued :
Type
Protection
Protection
Protection
Protection
Protection
Protection
Protection
Protection
Notes: If same protection which includes all system for 2-stage products is triggered 3 times
within 1 hour, the unit should be power-off to recovery.

MRCT-075CWN1-D(C):
Standby
Normal operation
Phase sequence error or phase lack
Indoor side room temperature (T1) error, or high
pressure protection, or high temperature protection of
discharge sensor
Evaporator pipe temperature sensor (T2) error
Condenser pipe temperature sensor (T3) error
Ambient temperature sensor (T4) error
Over-current protection of compressor
Low temperature protection of evaporator
75
Content
Comprehensive protection of outdoor side fan motor
Protection of high/low pressure or high temperarture
protection of discharge sensor in system A
Protection of high/low pressure or high temperarture
protection of discharge sensor in system B
High temperature protection of condenser in system A
High temperature protection of condenser in system B
Anti-freezing protection of evaporator in system A
Anti-freezing protection of evaporator in system B
Protection of outdoor ambient temperature
Content
MCAC-RTT6S-201701
Code
P3
Comprehensive
P4
protection of system A
Comprehensive
P5
protection of system B
P8 Power off to recovery.
P9 Power off to recovery.
Pc
Pd
PA
LED1 LED2
(Red) (Yellow)
OFF OFF
ON ON
FLASH FLASH
FLASH FLASH
FLASH OFF
OFF FLASH
ON FLASH
OFF OFF
OFF FLASH
Remarks
LED3
(Green)
ON
ON
FLASH
OFF
FLASH
FLASH
FLASH
FLASH
OFF