97
DC Inverter Multi
VRF Service Manual
F4
Outdoor ambient
temperature
sensor error
Outdoor
environment
sensor
Test for 30 seconds successively to check if the temperature sensor is disconnected.
If yes, alarm will be sent; otherwise no processing will be made. If the controller
of outdoor unit detects failure of outdoor sensor under open circuit, short circuit
and excess of test value, the outdoor unit will execute the following default
actions, that is, the error message will be sent to each indoor unit and the error
code will be displayed via error indicator or wired controller. When the outdoor
ambient temperature is lower than -5
, the disconnection failure of outdoor
inlet, middle and exit sensors in shield room will be processed as under -30
.
F7
Outdoor defrost
temperature
sensor error
Outdoor Defrost
Sensor
Test for 30 seconds successively to check if the temperature sensor is disconnected.
If yes, alarm will be sent; otherwise no processing will be made. If the controller
of outdoor unit detects failure of outdoor sensor under open circuit, short circuit
and excess of test value, the outdoor unit will execute the following default
actions, that is, the error message will be sent to each indoor unit and the error
code will be displayed via error indicator or wired controller. When the outdoor
ambient temperature is lower than -5
, the disconnection failure of outdoor
inlet, middle and exit sensors in shield room will be processed as under -30 .
F9
Exhaust
temperature
sensor error
Exhaust
temperature
sensor
Test for 30 seconds successively to check if the temperature sensor is disconnected.
If yes, alarm will be sent; otherwise no processing will be made. If the controller
of outdoor unit detects failure of outdoor sensor under open circuit, short circuit
and excess of test value, the outdoor unit will execute the following default
actions, that is, the error message will be sent to each indoor unit and the error
code will be displayed via error indicator or wired controller. When the outdoor
ambient temperature is lower than -5
, the disconnection failure of outdoor
inlet, middle and exit sensors in shield room will be processed as under -30 .
1.2 Display Code on Digital Tube of Outdoor Mainboard
Error
Display
on Digital
Tube
Display on
Indoor Unit
Error
Display
on
Digital
Tube
Display on
Indoor Unit
DC overvoltage protection PH E5 Input overcurrent protection PA E5
Module overheat protection P8 E5 Jumper fault C5 No display
Current test circuit fault Pc E5 Recharging circuit fault PU E5
Module temperature sensor fault P7 E5 High-pressure protection E1 E1
Compressor overcurrent protection P5 E5 Low-pressure protection E3 E3
DC undervoltage protection PL E5 Exhaust protection E4 E4
Compressor startup failure Lc E5 Compressor overload protection H3 E5
PFC module protection Hc E5
Communication fault (between indoor
/ outdoor unit and wired controller)
E6 E6
Drive resetting and stop P0 E5
Outdoor ambient temperature
sensor error
F4 F4
Protection of compressor against
loss of synchronization
H7 E5
Indoor coil inlet temperature
sensor error
F5 F5
Compressor protection
against loss of phase
Ld E5
Indoor coil middle temperature
sensor error
F6 F6
Inverter drive communication fault P6 E5
Outdoor coil outlet
temperature sensor error
F7 F7
IPM module protection H5 E5 Exhaust temperature sensor error F9 F9
To Next Page
Loading...
