Baxi 45 HTE Installation, Operation And Maintenance Manual page 45

3.9 table of faults and error messages
Error Description of fault
code
E10 Outdoor temperature sensor fault
E20 ntc output sensor failure
E50 domestic hot water ntc sensor failure
E110 safety or flue gas thermostat tripped
E128 Loss of flame during operation (the
ionization current has fallen below
the limit)
E129 Minimum fan speed limit is hurt
E132 floor thermostat tripped
E133 no gas
E151 boiler circuit board error
E153 the reset key has been pressed
inappropriately
E154 internal error on boiler circuit module
E160 fan speed threshold not reached
E164 no hydraulic differential pressure
switch enabling signal
All the faults are displayed in order of importance; if several faults occur simultaneously, the first to be displayed
is the one with highest priority. After the cause of the first fault has been removed, the second one will be
displayed, and so on.
If any given fault occurs frequently, contact the authorised Service Centre.
IstructIons pErtaInIng to thE usEr
Corrective action
Call an authorised service centre.
Call an authorised service centre.
Call an authorised service centre.
Press the reset key (for about 2 seconds: if this device is triggered repeatedly, call
the authorised service centre)
Call an authorised service centre.
Call an authorised service centre.
Call an authorised service centre.
Press the reset key (for about 2 seconds); if the fault persists, call the authorised
service centre)
If symbol is displayed, press the reset
electricity supply to the boiler for at least 10 seconds; if the fault persists, call the
authorised service centre.
Check the positioning of the ignition and flame sensing electrode (see section 16).
Press the key again (about 2 seconds)
Press and hold reset button (2 seconds approx­.) then press again when warning
E153 appears
Call an authorised service centre.
Check that the system is at the rated pressure. (refer to the section on filling the
system). if the fault persists, call the authorised service centre.
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button otherwise switch off the
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