COMMISSIONING AND MAINTENANCE
25
Outdoor unit faults
Indoor code
indication
Outdoor unit led
1 flashing
Description
Remarks
F1
2
Power module fault
After 3 consecutive interventions in 10 minutes,
the unit resets after problem resolution
F2
24
Compressor motor overcurrent
The unit resets automatically
F3
4
Communication error between main
board and power module
The alarm activates 4 minutes after the unit start
The unit resets after problem resolution
F4
8
Overheat protection for compressor
discharge
The unit resets automatically when the
temperature drops under 110°C
After 3 consecutive interventions in 30 minutes,
the unit resets after problem resolution
F6
12
External air probe fault
The unit resets after problem resolution
F7
11
Suction probe fault or suction
overtemperature
The unit resets automatically when the
temperature drops under 40°C or after problem
resolution
F8
9
Fan motor malfunction
After 3 consecutive interventions in 30 minutes,
the unit resets after problem resolution
F11
18
Deviate from the normal for the
compressor
The unit resets after problem resolution
F12
1
External unit microprocessor fault
The unit resets after problem resolution
F13
16
Lack of refrigerant
The alarm activates 5 minutes after the unit start
After 2 consecutive interventions in 20 minutes,
the unit resets after problem resolution
F14
17
4-way valve malfunction
The alarm activates 5 minutes after the unit start
The alarm activates when, in Heating mode, the
temperature detected by the indoor unit heat
exchanger probe is less than or equal to 15°C for 1
minute and for 3 times in an hour
F15
20
Electronic board overtemperature
protection sensor fault
After 3 consecutive interventions in 1 hour, the unit
resets after problem resolution
F19
6
Wrong power supply voltage
The unit resets after problem resolution
F21
10
Defrost temperature sensor failure
The unit resets after problem resolution
F22
3
Main electronic board protection
against overcurrent
After 3 consecutive interventions in 30 minutes,
the unit resets after problem resolution
F23
25
Overcurrent protection for single-
phase of the compressor
The unit resets after problem resolution
F25
13
Discharge temperature sensor
failure
The alarm activates 4 minutes after the unit start
After 3 consecutive interventions in 30 minutes,
the unit resets after problem resolution
F27
7
Compressor lockout
After 3 consecutive interventions in 10 minutes,
the unit resets after problem resolution
F28
19
Power module malfunction
After 3 consecutive interventions in 10 minutes,
the unit resets after problem resolution
F30
14
Compressor suction overtemperature
The alarm activates 10 minutes after the unit start
The alarm activates if temperature exceeds 40°C
for 5 consecutive minutes
The alarm resets after problem resolution
Summary of Contents for R32 Series
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