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37 Troubleshooting(continued)
Part number 550-100-325/0419
95
AquaBalance
®
Series 2 Wall Mount Gas-fired Water Boiler – Boiler Manual
Table 4
F
Blocking codes
The boiler controller recognizes also the fault situations that can block the heat demands but do not lead to lockout condition.
When the error condition becomes resolved, error will disappear but will be also written into the history data. If this is the case,
there is also an “F” on the status display. Temperature display gives an error code. The meaning of the code is as follow:
F07
The Exhaust gases temperature is too high.
F10
The CH supply water temperature sensor 1 error.
F11
The CH return water temperature sensor error.
F12
The DHW water temperature sensor error.
F13
The Exhaust gases temperature sensor error.
F14
The CH supply water temperature sensor 2 error.
F15
Minimum and maximum frequency feedback from fan error.
F20
The water pressure in the CH installation is near the low level.
F21
The water pressure in the CH installation is near the high level.
F27
The exhaust gas temperature is too high (PVC/CPVC/Polypro/AL29-4C - selection).
F34
Low mains voltage.
F35
Frequency error.
F37
The water pressure in the CH installation is too low.
F39
Outside sensor error.
F40
The water pressure in the CH installation is too high or there’s a Control fault.
F43
Heat exchanger protection.
F47
Water pressure sensor not connected.
F50
Variable input switch contact opened.
F51
Low water error.
F52
Too high difference between two CH supply water temperature sensors.
F53
High limit thermostat input error.
F64
5 MicroCom reset in 15 minutes time frame.
F66
Software doesn’t match.
Figure 120(continued)
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