Removing The Fuses; Connecting The External Sensor - Ariston Type C Installation, Servicing And Operating Instructions

6. To remove the display PCB, remove the two screw
W4 and lift the PCB out (see Fig. 103);
7. Reassemble in reverse order;

18.4.2 Removing the fuses

1. Carry out step 18.4.1;
2. Remove the fuses "X" (see Fig. 105)
3. Reassemble in reverse order.
N : F = 2A
OTE USE RATING
X
52
W4
Fig. 103
MP FAST FUSE
Fig. 105
8. To remove the main PCB disconnect all electrical
connections and remove the two screws W5 (see Fig.
104);
Fit the correct EEPROM supplied with the replacement
PCB;
9. Reassemble in reverse order.
W5

18.5 Connecting the external sensor

1. Access the main PCB as in step 18.4.1;
2. Install the interface PCB supplied in the external
sensot kit on the main PCB (see Fig. 106);
3. Connect the wires between the external sensor
and the interface PCB* (see Fig. 106).
* E
NSURE THAT THE WIRES FOR THE EXTERNAL SENSOR
ARE CONNECTED TO THE TERMINALS INDICATED IN
110.
N : T
OTE HE WIRES ARE NOT POLARITY SENSITIVE
I !!
MPORTANT
D
O NOT FIT THE EXTERNAL SENSOR IN THE EVENT THAT
THE BOILER IS BEING USED TO HEAT AN INDIRECT HOT
WATER STORAGE CYLINDER
Fig. 104
Fig. 106
F .
IG
.
.