Rheem RHMV2421MNACJA Service Manual page 166

Error code
11.3
11.4
16.5
22.1
5U.1
62.1
62.3
62.8
63.1
65.3
71.1
72.1
73.2
73.3
74.1
75.1
76.1
76.2
77.1
84.1
86.1
86.4
94.1
95.1
97.3
98.3
99.1
9A.1
A1.1
A3.1
3-2. Error code
Serial communication error
Serial communication error during operation
Communication error between controller and outdoor unit
Indoor unit capacity error
Indoor unit error
Outdoor unit PCB Model information error
EEPROM access error
EEPROM data corruption error
Inverter error
IPM error (Trip terminal L error)
Discharge temp. sensor error
Compressor temp. sensor error
Condenser coil middle temp. sensor error
Condenser coil liquid temp. sensor error
Outdoor temp. sensor error
Suction gas temp. sensor error
Valve sensor error
Heat sink temp. sensor error
Current sensor 1 error (stoppage permanently)
Discharge pressure sensor error
Outdoor unit high pressure switch1 error
Trip detection
Compressor motor control error (stoppage permanently)
Fan motor 1 error (Duty error)
Fan motor 2 error (Duty error)
4-way valve error
Coil 1 (expansion valve 1) error
Discharge temperature 1 error (stoppage permanently)
Compressor 1 temperature error
Error type
- (05-18) -
3. Test