
Part number 550-100-305/0118
106
AquaBalance
TM
W
ALL
M
OUNT
GAS
-
FIRED
WATER
BOILER
—
Boiler Manual
34
Troubleshooting
(continued)
Category
E2 prom parameters
Unit
Description
Num.
Address
Description
Boiler
1
CL4 – A532
CH supply sensor1 temperature
Boiler
2
CL4 – A567
CH supply sensor2 temperature
Boiler
3
CL4 – A55B
CH return sensor temperature
Boiler
4
CL4 -A53D
DHW sensor temperature
Boiler
5
CL4 -A568
Exhaust sensor temperature
Boiler
6
CL4 -1110
Water pressure sensor
~#\
Boiler
7
CL4 -A554
Outside temperature sensor
Boiler
8
CL4 -0FAB MSB
Control water set point
°F
Boiler
9
CL4 -FC02 MSB
CH Virtual set point
°F
Boiler
10
CL4 -FC02 LSB
DHW Virtual set point
°F
Boiler
11
CL4 – 11DC MSB
Fan speed -Setpoint
Hz
Boiler
12
CL4 – 11DC LSB
Fan speed -Feedback
Hz
Boiler
13
CL4 – 0364
Flame current
`
Boiler
14
CL4 – FAFB MSB
PWM modulating pump
%
Boiler
15
CL4 – FAFB LSB
Step of Triac modulating pump
Num
Boiler
16
CL4 – 0F0E
$;#X]#
Hz
Boiler
17
ML -F68B
DHW over-temp_burnerOFF-initially_Temperature
°F
OpenTherm
18
CL4 – FAF4 MSB
OT room setpoint
°F Int
OpenTherm
19
CL4 – FAF4 LSB
OT room setpoint
°F Dec
OpenTherm
20
CL4 – FAC8 MSB
OT room temp
°F Int
Figure 134
Troubleshooting suggestions for
AquaBalance
™
boilers —
Fault displays and diagnostics
(continued)
Some informations can be accessed with a communication package running on the PC.
Parameter Description
D1
After cycle of Domestic water mode, D1 will be displayed.
D2
When required boiler water set - point is reached D2 will be displayed.
D3
After an attempt for ignition, re-trial ignition delay is in effect (D3 is displayed).
jXX`XQ#`Q
XZX"]jX\!]\^X!"|=XQ"X\\#{!`XjXZ `#^\]#X^^\]!?"^`"Q!"#~
>]#`X]X]#"^X\#"\]\]!XQ
>]#`XX]^\]!#\X"]QX]!^j"XX^"]`] #^`^X
•
D1
….the boiler is / has finished the call for Domestic Water heating, and is in the transition to either standby mode or
central heating mode.
•
D2
….the boiler has reached the required water set point, and the firing has stopped / with a call for Central Heating still
applied by the T-Stat to the boiler. Pumps will continue to operate and the boiler is monitoring the two internal water
sensors (return & discharge) waiting for a water “Delta-T” to return…at that time the boiler will re-fire if need be.
•
D3
….the boiler has made 3 tries for ignition and has failed to ignite. A re-trial ignition cycle / delay is in effect for 3 more
tries to ignite.