Haier MRV 5 Series Troubleshooting Manual page 193

Digital tube
Fault definition
indication on
master unit
Defrosting temp.
sensor Tdef failure
Ambient temp.
sensor Tao failure
Suction temp.
sensor Ts failure
Discharging temp.
sensor Td1 failure
Discharging temp.
sensor Td2 failure
Central controller
display
BMS display
Indoor PCB
LED
Indication on
Fault definition
wired controller
(hex)
Oil temp.
14
sensor Th failure
YR-E17
Oil temp.
sensor Toil1 failure
15
YR-E17
Oil temp.
sensor Toil2 failure
16
YR-E17
Heat exchanger
inlet temp.Toci1
failure.
17
YR-E17
Universal display
20
20
HCM-01A
Flash 20 times
190
Digital tube Indication on
indication on wired controller
master unit (hex)
YCZ-A004
20
18
YR-E17
18
YR-E17
19
YR-E17
HCM-05