Maintenance
83
MAXXfl o EVO 150/302
6.6 ERROR CODES (CONTINUED)
Error
Code
Error Code Description
Diag.
Code
Notes
171
Fault input 1
Any
User defi ned OZW672 input D1 has been activated.
172
Fault input 2
Any
User defi ned OZW672 input D2 has been activated.
183
Unit in parameterisation mode 770
Code will be displayed when a programming stick is used but
should clear when programming is complete. Repeat stick op-
eration if fault code persists
Any
Press reset after any programming has been actioned to re-
move lockout
217
Sensor error
765
766
Ionisation current fault or short circuit. Check operation of ioni-
sation probe using parameter 8329 (menu - Diagnostics heat
generation). Ionisation probe may need replacing. Check electri-
cal supply to the heater and burner - pay special attention to the
earth circuit.
218
Pressure supervision
Any
Water pressure inside appliance is low but not yet critical. Ap-
pliance will continue to operate but at 80% of maximum output.
Full output power will not be available until the water pressure is
at or above 0.2 bar.
317
Mains frequency outside per-
mitted range
275
461
The frequency (Hz) of the electrical supply is outside permitted
tolerance. Check electrical supply to heater.
322
Water press 3 too high
Any
Water pressure inside the appliance is too high for safe opera-
tion. Operation automatically resumes once water pressure is
below maximum levels. Check that the appliance fl ow is not
restricted or blocked, or the water isolator valves are shut off .
323
Water press 3 too low
Any
Water pressure inside appliance is too low for safe operation.
Operation automatically resumes once water pressure is above
0.1 bar.
324
Input BX, same sensors
110
BX sensor duplicated - Two sensor inputs have been defi ned
twice with the same sensor type (e.g. B3). Review last param-
eters programmed to remove duplication.
325
Input BX/extension module,
same sensors
Any
BX expansion module 1 sensor duplicated - Two sensor inputs
have been defi ned twice with the same sensor type (e.g. B3).
Review last parameters programmed for the expansion module
to remove duplication.
327
Extension module, same
function
Any
AGU2.5 extension module function duplicated - check param-
eter setup for the AGU2.5 extension module (“Confi guration”
menu)
335
Sensor input BX21 without
function
211
A sensor has been detected connected to BX21 of the AGU2.5
expansion module 1, but not defi ned. Defi ne the sensor using
the parameters or remove the sensor if not required.
213
215
As above except the undefi ned sensor is connected to an
AGU2.5 expansion module. The AGU2.5 expansion module
should be defi ned as module 1 - Check the dip switches on the
front of the device is set correctly
336
Sensor input BX22 without
function
Any
See Error 335 for guidance
353
Cascade fl ow sensor B10
missing
Any
Check connections and confi guration of common fl ow tempera-
ture sensor (B10), which is located at the feed into the tank on
the front, left, mid section of the appliance
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