gledhill benchmark BoilerMate A-Class OV Series Design, Installation And Servicing Instructions page 10

Sensor Sensor
S1 T Overheat 1
S2 T Overheat 2
S3 T DHW in
S4 T DHW out
S5 T Tank bottom
S6 T Tank middle
Sensor Control Set Points
Display
S1 Middle store sensor on
S2 Middle store sensor off
S3 DHW in
S4 DHW out
S5 Bottom store sensor on
S6 Bottom store sensor off
Common Fault Codes
Code
10 Overheat error
30 Phase error
33 Appliance selection
37 S1 overheat 1 open
40 I.D. resistor open
41 S4 sensor open
42 S5 sensor open
43 S6 sensor open
44 S2 overheat 2 open
Any other code displayed should be checked against the full chart
Sensors used in BoilerMate A-Class
Connector J9 pins
6 & 14
Top of store in dry pocket (S1 & S2 are in single housing)
2 & 10
3 & 11 In cold water inlet pipe (Wet i.e. direct)
4 & 12 In hot water outlet pipe (Wet i.e. direct)
5 & 13 Bottom of store in dry pocket for store charging
1 & 9 Middle of store in dry pocket for store charging
Sensor
Code
45 S1 overheat 1 shorted
48 I.D. resistor shorted
49 S4 sensor shorted
50 S5 sensor shorted
51 S6 sensor shorted
52 S2 overheat 2 shorted
1.0 DESIGN
1.2 TECHNICAL DATA
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.
Location
Control Set Points
The sensor control set points are shown
Temp
opposite. PLEASE NOTE THAT THE DISPLAY
68
S1 - S6 IS NOT THE SAME AS THE SENSOR
REFERENCE.
77
35
55
60
70
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.
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