AERMEC FK360 - FK Air Conditioner Alarm and Error Codes; Error Code Reference

21
Aermec. 16.01. 5140901_01
15. ALARMS DISPLAY
If malfunctioning occurs during system
functioning, the units show the relative alarm
code which easily permits to the After-Sales
Service Area to identify the cause of errors; this
error code is shown on the display with two
characters.
If alarm codes other than those shown in the table appear, please contact the Aermec Assistance Service.
WARNING:
Turn off the unit immediately and
disconnect the power cable if you see these
faults:
• The machine is turned on or off in fault
mode.
• The fuse burns very often.
• Water accidentally on the unit while it is
operating.
• The electric cables are very hot or
damaged, even partially.
• Other fault situations.
Code on the
display
Alarm description
E2 Anti-freeze protection Contact specialised personnel or the Aermec Assistance Service.
H5
IPM protection
Module temperature too high
Contact specialised personnel or the Aermec Assistance Service.
E5
Protection from overcharging
Contact specialised personnel or the Aermec Assistance Service.
H4
System fault
Contact specialised personnel or the Aermec Assistance Service.
E4
Compressor protection from high temperature
Contact specialised personnel or the Aermec Assistance Service.
H3
Compressor protection from overloading
Contact specialised personnel or the Aermec Assistance Service.
L9
Power supply protection
Contact specialised personnel or the Aermec Assistance Service.
H5
Module temperature too high
Contact specialised personnel or the Aermec Assistance Service.
PL DC bus-bar voltage too low Contact specialised personnel or the Aermec Assistance Service.
PH DC bus-bar voltage too high Contact specialised personnel or the Aermec Assistance Service.
HC PFC protection Contact specialised personnel or the Aermec Assistance Service.
Fo Coolant gas collection Contact specialised personnel or the Aermec Assistance Service.
F3 Short circuit in temperature sensor for external environment Contact specialised personnel or the Aermec Assistance Service.
F4 Short circuit in temperature sensor for external compressor Contact specialised personnel or the Aermec Assistance Service.
F5 Short circuit in external discharge sensor Contact specialised personnel or the Aermec Assistance Service.
E6 Communication malfunction Contact specialised personnel or the Aermec Assistance Service.
F1 Short circuit in internal air temperature probe Contact specialised personnel or the Aermec Assistance Service.
F2 Short circuit in evaporator probe Contact specialised personnel or the Aermec Assistance Service.
U7 4-way valve malfunction Contact specialised personnel or the Aermec Assistance Service.
15.1. ERROR CODES