Page 21
mCHP
BOILERMA
TE
A-CL
ASS
TECHNICAL SPECIFICATION 3.0
Table 3.9 Controller Error Codes and Descriptions
LOCKING ERRORS
BLOCKING ERRORS
ERROR TABLE DHW
No
Definitions
No
Definitions
No
Definitions
0
E
2
PROM READ ERROR
25
REFHi_TOO_LO ERROR
0
T_DHW_OUT_OPEN
1
SAFETY RELAY ERROR
26
REFHi_TOO Hi ERROR
1
T_DHW_iN_OPEN
2
E
2
PROM ERROR
27
REFLO_TOO_LO ERROR
2
T_DHW_OUT_SHORTED
3
WRONG E
2
PROM SiGNATURE
28
REFLO_TOO_Hi ERROR
3
T_DHW_iN_SHORTED
4
ROM ERROR
29
WD_COMMUNiCATiON ERROR
5
RAM ERROR
30
PHASE_ERROR
6
20MS ERROR
31
50HZ_ERROR
7
41MS ERROR
32
RESET_BUTTON_ERROR
WARNING TABLE
8
STACK ERROR
33
APPLiANCE SELECTiON ERROR
No
Definition
34
SPARE_BLOCK_ERROR_34
0
T_TANK_MiDDLE_OPEN
10
OVERHEAT ERROR
35
SPARE_BLOCK_ERROR_35
1
T_TANK_BOTTOM_OPEN
11
OVERHEAT DiFFERENCE ERROR
36
GP_LOST_ERROR
2
T_TANK_MiDDLE_SHORTED
12
T_MAX LOCK ERROR
37
T_OVERHEAT_/_OPEN
3
T_TANK_BOTTOM_SHORTED
38
OPEN_SENSOR_1
4
EB_FAiLURE
39
OPEN_SENSOR_2
40
T_iD_OPEN
41
OPEN_SENSOR_4
17
15MS ERROR
42
OPEN_SENSOR_5
18
FLAG BYTE iNTEGRiTY ERROR
43
OPEN_SENSOR_6
19
AD_Hi_CPL ERROR
44
T_OVERHEAT_2_OPEN
20
AD_LO_CPL ERROR
45
SHORTED_SENSOR
21
REGiSTER ERROR
46
SHORTED_SENSOR_1
47
SHORTED-SENSOR_2
23
BOiLER RELAY ERROR
48
T_iD_SHORTED
24
EH_RELAY ERROR
49
SHORTED_SENSOR_4
50
SHORTED_SENSOR_5
51
SHORTED_SENSOR_6
52
T_OVERHEAT_2_SHORTED
54
iD_ERROR
55
TOP_iH_FAiLURE
56
BOT_iH_FAiLURE
Table 3.8 Sensor Sensor control set point readings
Display
Sensor
S1
Top/middle store sensor, S6, ON set point
S2
Top/middle store sensor, S6, OFF set point
S3
DHW inlet sensor, S3, set point
S4
DHW Outlet sensor, S4, set point
S5
Bottom store sensor, S5, ON set point
S6
Bottom store sensor, S5, OFF set point
Summary of Contents for mCHP BMA 225
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