Perfect Aire 3PAMS18-HH-MZO2, Service Manual

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7.2 Indoor Unit Error Display
For Old Console series
MFAU-12HRFN1-M, MFAU-12HRFN1-M(B);
Operation Timer De-frost
Failure
★
X X Indoor room temperature sensor (T1 ) malfunction
X X
★
Evaporator coil temperature sensor (T2) malfunction
X
★
X Communication malfunction between indoor and outdoor units
 ★
X Low ambient temperature cut off in heating
★ ★
X Indoor unit EEPROM parameter error
X
★

Outdoor fan speed malfunction
★
X
★
Inverter module (IPM) malfunction
★
★ ★
Outdoor temperature sensor(coil sensor T3 or ambient temperature
sensor T4) malfunction or Outdoor unit EEPROM parameter error
★

X Compressor top high temperature protection (OLP)
★ ◎
X Compressor drive protection
★
X

Indoor units mode conflict
★

★
Indoor fan speed malfunction
◎
X X
In standby mode
●
◎ ◎ In force cooling mode
★
flash at 5Hz,

light, X extinguished,
◎
flash at 0.5Hz
For Old Duct/Cassette/Floor Ceiling
MTBU-12HRDN1-M, MTBU-12HRDN1-M(B), MTBU-18HRDN1-M, MTB-24HRFN1-MW;
MCA2U-12HRFN1-M, MCA2U-12HRFN1-M(B), MCA2U-18HRFN1-M, MCD-24HRFN1-MW;
MUBU-12HRFN1-M, MUBU-12HRFN1-M(B), MUBU-18HRFN1-M, MUE-24HRFN1-MW;
Operation Timer
De-
frost
Alar
m
Failure
Display
ODU Error
code
★
X X X
Indoor room temperature sensor (T1 )
malfunction
E0
——
X X
★
X
Evaporator coil temperature sensor
(T2) malfunction
E1
——
X
★
X X
Communication malfunction between
indoor and outdoor units
E2 E2
X X X
★
Water-level alarm malfunction E3
——