Pioneer YN020GMFI22M2D Service Manual page 27

For 2015 or earlier Wall Mount Models
WB009GMFI16HLD, WB012GMFI16HLD, WB018GMFI16HLD (2015 and earlier)
De-frost Timer
 
★ ★
 
 
X 
 

★
X X
X 
 X

X

X

X
Auto Operatio Failure
  Indoor unit EEPROM parameter error
Communication malfunction between indoor and
★ ★
outdoor units error
Zero-crossing signal detection error
★ ★
Indoor fan speed has been out of control
★ ★
X Outdoor temperature sensor(coil sensor T3 or
★
ambient temperature sensor T4) malfunction or
Outdoor unit EEPROM parameter error sensor

Indoor room temperature sensor(room sensor T1
★
or coil sensor T2) malfunction
Outdoor fan speed has been out of control
★ ★

Inverter module (IPM) malfunction
★
 Over-voltage or under-voltage protection
★
X Compressor top high temperature protection
★
(OLP)

Low ambient temperature cut off in heating
★
Compressor drive malfunction
★ ★
Indoor units mode conflict
★ ★
Display
E0
E1
E2
E3
E5
E6
E7
P0
P1
P2
P3
P4
P5