Technical data

Page 10
1.2 TECHNICAL DATA
1.0 DESIGN
Sensor Tempature Readings
Details of the various sensors S1-S6 used in
the BoilerMate A-Class are shown opposite.
The sensor reference i.e. S1 and the actual
temperature at that sensor flash alternately on
the display when selected.
Control Set Points
The sensor control set points are shown
opposite. PLEASE NOTE THAT THE DISPLAY
S1 - S6 IS NOT THE SAME AS THE SENSOR
REFERENCE.
Fault Codes
Fault code locations are numbered C0 - CF
and c0 - cF.
CO/cO locations hold the
latest fault recorded.
A code of FF indicates that the fault location
is empty.
If a sensor is faulty instead of a temperature
it will show E1 if open circuit and E2 if short
circuit.
Sensors used in BoilerMate A-Class
Sensor Sensor Connector J9 pins Location
S1 T Overheat 1 6 & 14
Top of store in dry pocket (S1 & S2 are in single housing)
S2 T Overheat 2 2 & 10
S3 T DHW in 3 & 11 In cold water inlet pipe (Wet i.e. direct)
S4 T DHW out 4 & 12 In hot water outlet pipe (Wet i.e. direct)
S5 T Tank bottom 5 & 13 Bottom of store in dry pocket for store charging
S6 T Tank middle 1 & 9 Middle of store in dry pocket for store charging
Sensor Control Set Points
Display Sensor Temp
S1 Middle store sensor on 68
S2 Middle store sensor off 77
S3 DHW in 35
S4 DHW out 55
S5 Bottom store sensor on 60
S6 Bottom store sensor off 70
Common Fault Codes
Code Code
10 Overheat error 45 S1 overheat 1 shorted
30 Phase error 48 I.D. resistor shorted
33 Appliance selection 49 S4 sensor shorted
37 S1 overheat 1 open 50 S5 sensor shorted
40 I.D. resistor open 51 S6 sensor shorted
41 S4 sensor open 52 S2 overheat 2 shorted
42 S5 sensor open
43 S6 sensor open
44 S2 overheat 2 open
Any other code displayed should be checked against the full chart