37
CODE
ALARM DESCRIPTION
PE
Drift protection system
Pd
Protection system for connection sensor
P6
Internal communication error
H3
Projection system for compressor overheating
LP
Internal unit external error recognition (incorrect placement)
EE
Internal memory error
dn
Wrong connection of the communication cable, or failure of the electronic expansion valve
U5
Current control circuit malfunction
dd
Wrong connection of the communication cable, or failure of the electronic expansion valve
E7
Operating Mode Conflict Error (multisiplt)
Fo
Coolant recovery mode currently in progress
H1
Defrosting or oil recovery during hot running, currently in progress
P1
Current rated cooling or heating power output currently running
P2
Maximum power in cooling or heating currently in use
P3
Average power output in cooling or heating currently in use
P0
Minimum power in cooling or heating currently in use
H7
Compressor out of sync
Lc
Compressor start failed
E4
Compressor in overload protection capsule
E8
Compressor in overload protection
E5
Overload protection system
P5
Overload protection (single phase)
H5
Current control module protection
U7
4 way valve switching malfunction
F8
Compressor working frequency limiter or abnormal reduction in compressor working frequency
En
Power supply module with compressor working frequency limitation or abnormal reduction of
compressor working frequency
F9
Temperature overshoot with frequency limitation or anomalous reduction in compressor working
frequency
FH
Antifreeze protection with frequency limitation or abnormally reduced compressor working
frequency
F6
Overload with frequency limitation or abnormal reduction of compressor working frequency
F7
Oil return to compressor during cooling mode
E9
Cold air jets (in draft or during heating mode)
E2
Antifreeze protection
LA
Fault on fan 2 (for two fans unit) of the outdoor unit (fan blocked or unplugged)
L3
Fault on fan 1 (for units with two fans) of the outdoor unit (fan blocked or unplugged)