6 .2 Faults displayed
on the single phase outdoor unit
To access the electronic board, the front panel (RH
side) must be removed from the outdoor unit.
The faults are coded by the flashes of the LED.
When an error occurs:
The diode "
ERROR
" (2) flashes
Press the "
ENTER
" button once (SW3).
The "
ERROR
" diode (2) flashes several times according
to the type of error (see table below).
SW1
SW2
SW3
SW4
SW5
(1)
(2)
(3)
(4)
(5)
figure 52 - Positions of the switches
and diodes of the single phase outdoor unit
Diode display
Error contents
1 Flash
Serial communication feedback error.
2 Flashes
Discharge thermistor error.
3 Flashes
Pressure switch probe error .
4 Flashes
Error on exchanger temperature sensor.
5 Flashes
Error on exchanger temperature sensor.
6 Flashes
Expansion valve thermistor error.
7 Flashes
Outdoor thermistor error.
8 Flashes
Compressor thermistor error.
9 Flashes
Radiator temperature probe error.
11 Flashes
Discharge thermistor protection (permanent stop).
12 Flashes
Discharge thermistor protection (permanent stop).
13 Flashes
Current sensor error (permanent stop).
14 Flashes
Detection error for the position of the compressor rotor (permanent stop).
15 Flashes
Compressor start error (permanent stop).
16 Flashes
Error on fan 1 motor (permanent stop).
17 Flashes
Error on fan 2 motor (permanent stop).
18 Flashes
Inverter error.
19 Flashes
Active filter error
20 Flashes
Low pressure abnormal.
21 Flashes
Connection error with the hydraulic module.
22 Flashes
Hydraulic unit abnormality condition.
Installation and operating manual
"
1605 - EN
"
alfea hybrid duo heat pump oil low NOx CH
- 58 -