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Part number 550-100-325/0419
102
AquaBalance
®
Series 2 Wall Mount Gas-fired Water Boiler – Boiler Manual
If a temperature sensor is open or shorted, the display shows “- -”.
Actual blower speed is shown always in terms of Hz.
Actual water flow rate is shown in terms of real l/min *10 and it has to be visualized also with the input switch
contact open. Example: real 1.5 l/min has to be visualized as 15.
Actual Flame Current is shown in terms of real uA*10. Example: real 0.3 uA*10 is shown as 3.
In case of DHW thermostat, t04: “On” means closed, “OFF” means open.
By pressing the “reset” push button for 1 second, it is possible to escape from the “Inquiry” mode. By pressing the “reset” push
button for 20 seconds, it is possible to leave the Installer mode. If no action has been taken, the MMI automatically leaves this
mode after 15 minutes.
P10 blinking
Boiler water pressure switch status Open 00, Closed 20
P11 blinking
Actual PWM modulating Pump (%) Min30, Max100
P12 blinking
Actual Step of Triac mod. mode (Num) Min24, Max59
F13 blinking
Actual Flame Current (uA*10) between 00 and 255
Figure 130
37 Troubleshooting
(continued)
“Hi” as History mode
Selecting “Hi” the display starts with showing “H01” blinking. By means of the CH+ and CH- push buttons it is possible to select
the parameters; between “H01” and “H08”. Selecting one of these parameters, by means of the DHW+ and DHW- push buttons, it
is possible to see the past error codes (not flashing).
By pressing the “
reset” push button for 1 second, it is possible to escape from the “History” mode. By pressing the “reset” push
button for 20 seconds, it is possible to leave the Installer mode. If no action has been taken, the MMI automatically leaves this
mode after 15 minutes.
Figure 131
H01 blinking
History buffer 1 (the latest)
H02 blinking
History buffer 2
H03 blinking
History buffer 3
-------- --------
H08 blinking
History buffer 08
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