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Part number 550-100-325/0419
110
AquaBalance
®
Series 2 Wall Mount Gas-fired Water Boiler – Boiler Manual
37 Troubleshooting(continued)
Category Unit
Description
Num. Address Description
Boiler 1 CL4 – A532 CH supply sensor1 temperature °F *10
Boiler 2 CL4 – A567 CH supply sensor2 temperature °F *10
Boiler 3 CL4 – A55B CH return sensor temperature °F *10
Boiler 4 CL4 -A53D DHW sensor temperature °F *10
Boiler 5 CL4 -A568 Exhaust sensor temperature °F *10
Boiler 6 CL4 -1110 Water pressure sensor Psi *10
Boiler 7 CL4 -A554 Outside temperature sensor °F *10
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 uA *10
Boiler 14 CL4 – FAFB MSB PWM modulating pump %
Boiler 15 CL4 – FAFB LSB Step of Triac modulating pump Num
Boiler 16 CL4 – 0F0E DHW ow sensor 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 139AquaBalance
®
(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).
* Check for proper fuel supply.
* Remove and check ignitor for proper gap, 5/32”, replace if disgured, check combustion setting Natural gas or LP.
* Insure condensate is draining properly.
* Insure venting size and length are correct and unobstructed.
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.
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