18
Green LED
If the green LED is illuminated but the boiler is not
functioning, check that the external controls fitted are
calling for heat.
Blown Fuse on Board
The fuse is located at the top of the PCB (fuse type 20mm
1000Ma anti surge)
The fuse covers external controls.
RCD UNIT TRIPS
Check that the RCD unit is correctly rated for boiler size. If
under size change. Inspect mains terminal block wiring for
short-circuiting. Check electrical elements for earth
continuity, if element is found to be faulty fit new element.
Other Information
Thermistor Values
Element Jumper Connections
It is important to set the jumpers to the required boiler
output before turning the boiler on. Boilers are factory
set to 6kW
Thermistor Values
Temperature (°C)
Resistance Value (Ohms)
0
32554
5
25339
10
19872.2
15
15698.5
20
12487.7
25
10000
30
8059.1
35
6543.7
40
5329.9
45
4371.7
50
3605.3
55
2988.7
60
2490
65
2084.4
70
1753
75
1480.9
