6 .4 Faults displayed
on the 3-phase outdoor unit
To access the electronic board, you must remove the
front (right-hand) facing from the outdoor unit.
Faults are coded by diode flashes.
When an error occurs:
- The diode "
ERROR
" (2) blinks.
- Press once on the switch "
ENTER
" (SW4).
- The "
ERROR
" (2) diode blinks several times depending
on the error's type
(see below).
figure 52 - Location of switches and diodes
on 3-phase outdoor unit
SW2
SW3
SW4
SW5
(1)
(2)
(3)
(4)
figure 53 - LED display on the 3-phase outdoor unit
Diode display
Error contents
1 Flash
Serial forward transfer error.
2 Flashes
Discharge thermistor error.
3 Flashes
Pressure sensor error.
4 Flashes
Heat-exchange thermistor (outlet) error.
5 Flashes
Heat-exchange thermistor (intermediate) error.
6 Flashes
Expansion valve thermistor error.
7 Flashes
Outdoor temperature thermistor error.
8 Flashes
Compressor thermistor error.
9 Flashes
Heat sink thermistor (inverter) error.
10 Flashes
Heat sink thermistor (P.F.C.) error.
11 Flashes
Discharge temperature protection (permanent stoppage).
12 Flashes
Compressor temperature protection (permanent stoppage).
13 Flashes
Current trip (permanent stoppage).
14 Flashes
Detection of compressor position error (permanent stoppage).
15 Flashes
Compressor start up error (permanent stoppage).
16 Flashes
Fan motor 1 error (permanent stoppage).
17 Flashes
Fan motor 2 error (permanent stoppage).
18 Flashes
Inverter error.
19 Flashes
P.F.C. error.
20 Flashes
Low pressure abnormal.
21 Flashes
Connection with hydraulic unit error.
22 Flashes
Hydraulic unit abnormality condition.
Diodes
and switches
Terminal
block
Installation and operating manual "1572 - EN"
- 65 -
Heat pump air/water split 2 services alféa excellia duo